CN109364889A - 一种温敏性水凝胶的制备方法及其用途 - Google Patents
一种温敏性水凝胶的制备方法及其用途 Download PDFInfo
- Publication number
- CN109364889A CN109364889A CN201811214515.6A CN201811214515A CN109364889A CN 109364889 A CN109364889 A CN 109364889A CN 201811214515 A CN201811214515 A CN 201811214515A CN 109364889 A CN109364889 A CN 109364889A
- Authority
- CN
- China
- Prior art keywords
- hydrogel
- fibrous
- preparation
- temperature
- cellulose nano
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000017 hydrogel Substances 0.000 title claims abstract description 102
- 238000002360 preparation method Methods 0.000 title claims abstract description 35
- 229920002678 cellulose Polymers 0.000 claims abstract description 56
- 239000001913 cellulose Substances 0.000 claims abstract description 56
- 239000002121 nanofiber Substances 0.000 claims abstract description 37
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims abstract description 28
- 229920002301 cellulose acetate Polymers 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 19
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 10
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000908 ammonium hydroxide Substances 0.000 claims abstract description 9
- 239000011259 mixed solution Substances 0.000 claims abstract description 9
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims description 71
- 238000006243 chemical reaction Methods 0.000 claims description 38
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 37
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 25
- 239000000377 silicon dioxide Substances 0.000 claims description 24
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 22
- 229910001385 heavy metal Inorganic materials 0.000 claims description 21
- 229920002554 vinyl polymer Polymers 0.000 claims description 19
- 235000019441 ethanol Nutrition 0.000 claims description 18
- -1 vinyl silica Chemical compound 0.000 claims description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 12
- 239000012153 distilled water Substances 0.000 claims description 12
- 229910017604 nitric acid Inorganic materials 0.000 claims description 12
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 11
- 150000002500 ions Chemical class 0.000 claims description 11
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 11
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 9
- ZMXDDKWLCZADIW-UHFFFAOYSA-N dimethylformamide Substances CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 8
- 229910002651 NO3 Inorganic materials 0.000 claims description 8
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 8
- QNILTEGFHQSKFF-UHFFFAOYSA-N n-propan-2-ylprop-2-enamide Chemical compound CC(C)NC(=O)C=C QNILTEGFHQSKFF-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 238000000944 Soxhlet extraction Methods 0.000 claims description 6
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 150000008065 acid anhydrides Chemical class 0.000 claims description 5
- 238000005660 chlorination reaction Methods 0.000 claims description 5
- 239000002070 nanowire Substances 0.000 claims description 5
- 229910001431 copper ion Inorganic materials 0.000 claims description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 3
- 239000012046 mixed solvent Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims 1
- 239000011976 maleic acid Substances 0.000 claims 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 description 20
- 239000000835 fiber Substances 0.000 description 12
- 239000010949 copper Substances 0.000 description 8
- 238000004108 freeze drying Methods 0.000 description 8
- 229920006395 saturated elastomer Polymers 0.000 description 7
- 239000003463 adsorbent Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000008961 swelling Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229920006221 acetate fiber Polymers 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 210000002966 serum Anatomy 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000001291 vacuum drying Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 229920005615 natural polymer Polymers 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229940056319 ferrosoferric oxide Drugs 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 229920003213 poly(N-isopropyl acrylamide) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0052—Preparation of gels
- B01J13/0065—Preparation of gels containing an organic phase
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/264—Synthetic macromolecular compounds derived from different types of monomers, e.g. linear or branched copolymers, block copolymers, graft copolymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28047—Gels
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/49—Oxides or hydroxides of elements of Groups 8, 9,10 or 18 of the Periodic Table; Ferrates; Cobaltates; Nickelates; Ruthenates; Osmates; Rhodates; Iridates; Palladates; Platinates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M14/00—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials
- D06M14/02—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of natural origin
- D06M14/04—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of natural origin of vegetal origin, e.g. cellulose or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/46—Materials comprising a mixture of inorganic and organic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Textile Engineering (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
本发明公开了一种温敏性水凝胶的制备方法,其包括如下步骤:制备醋酸纤维素纳米纤维;将所述醋酸纤维素纳米纤维用碱液进行脱乙酰化,得到纤维素纳米纤维;利用所述纤维素纳米纤维制备纤维素纳米纤维接枝聚(N‑异丙基丙烯酰胺‑co‑马来酸酐)水凝胶;将所述纤维素纳米纤维接枝聚(N‑异丙基丙烯酰胺‑co‑马来酸酐)水凝胶浸泡在氯化亚铁和氯化铁的混合溶液中,加入氨水进行反应,得到纤维素纳米纤维接枝聚(N‑异丙基丙烯酰胺‑co‑马来酸酐)/Fe3O4磁性纳米纤维复合水凝胶,即所述温敏性水凝胶。与现有技术相比,本发明具有如下的有益效果:本发明通过热致相分离方法制备纤维素纳米纤维,工艺简单、产量高,非常适合于工业化生产。
Description
技术领域
本发明涉及一种温敏性水凝胶的制备方法,属于多孔吸附材料技术领域。
背景技术
重金属是指密度大于4.5m2/g的金属元素,如Cu、Ag、Cr、Pb等金属。重金属离子主要通过化工生产、化肥农药、生活废水和矿山开采等排入水中,当水中重金属离子的浓度超过水体的自净能力时,就造成水体重金属污染。随着工业和农业的快速发展,大量的重金属废水排放,重金属污染已成为环境污染危害最大之一。重金属在自然条件下不易被降解,且通过食物链在人体内富集,近十年来国内重金属水污染事件频发,解决重金属污染问题刻不容缓。目前对重金属的污染主要通过化学法、如化学沉淀法、氧化还原法;生物法,如植物重修复法、生物吸附法和生物絮凝法;物理法,如分离法、离子交换法和吸附法。吸附法由于吸附剂来源丰富、价格低廉、吸附量大、处理效率高,简便易操作且无二次污染等优点,被广泛应用于重金属离子废水的处理。常用的吸附剂在选择性和回收利用方面存在一些不足。目前研究的吸附剂尝试将多种吸附材料通过物理掺杂或化学连接方法结合,利用各材料的结构优势,制备具有高吸附容量、强适应性和便于回收利用的吸附材料。
水凝胶是一种亲水性聚合物通过物理或化学交联相互缠结,形成三维网络结构的固体材料,水作为分散介质填充整个网络结构的孔隙。水凝胶作为一种具备三维网络结构的高分子材料,在去除重金属方面具有其独特的优势。智能型水凝胶对外界刺激(如:温度、pH、离子强度、电场强度等),具有响应性,因此将智能型水凝胶作为吸附剂,可通过改变外界环境来调控水凝胶对重金属离子的吸附过程,或根据水凝胶的特殊响应性对重金属离子进行识别。
天然高分子水凝胶具有来源丰富,价廉且生物相容性好,被广泛应用于水凝胶制备,但其稳定性差,因此常将天然高分子与合成高分子共混或接枝共聚等方式来提高水凝胶实际要求。然而大部分天然高分子为粉末状、块状或膜状结构,孔隙率低、比表面积小,接枝改性后,仍然存在孔隙率低、比表面积小等问题,因此其对重金属离子的吸附容量低。怎样提高重金属离子的吸附容量成为急需解决的关键问题。
发明内容
本发明的目的是提供一种温敏性水凝胶的制备方法及其用途。本发明是通过以下技术方案实现的:
一种温敏性水凝胶的制备方法,其包括如下步骤:
制备醋酸纤维素纳米纤维;
将所述醋酸纤维素纳米纤维用碱液进行脱乙酰化,得到纤维素纳米纤维;
利用所述纤维素纳米纤维制备纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶;
将所述纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶浸泡在氯化亚铁和氯化铁的混合溶液中,加入氨水进行反应,得到纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)/Fe3O4磁性纳米纤维复合水凝胶,即所述温敏性水凝胶。
作为优选方案,所述醋酸纤维素纳米纤维的制备方法为:
将醋酸纤维素溶解在四氢呋喃和N,N’-二甲基甲酰胺的混合溶剂中,得到淬火液,将所述淬火液在-30~-15℃下进行淬火后,用蒸馏水洗涤除去四氢呋喃和N,N’-二甲基甲酰胺,冷冻干燥得到的醋酸纤维素纳米纤维。
作为优选方案,所述淬火液中,醋酸纤维素、四氢呋喃和N,N’-二甲基甲酰胺的重量份数分别为0.2~0.5份、1~3份、5~10份。
作为优选方案,所述碱液为NaOH的乙醇溶液,其中NaOH的浓度为0.1~0.2mol/L。
作为优选方案,所述纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶的制备方法为:
将N-异丙基丙烯酰胺、马来酸酐、N,N’-亚甲基双丙烯酰胺溶解在硝酸溶液中,得到反应液A;
将硝酸铈铵溶解在硝酸溶液中,加入乙烯基修饰二氧化硅和所述纤维素纳米纤维,得到反应液B;
通过恒压滴液漏斗将反应液A逐滴加入反应液B中,在30~60℃下进行反应后,依次采用蒸馏水洗涤,采用丙酮索氏提取、抽滤,得到纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶。
作为优选方案,所述反应液A中:N-异丙基丙烯酰胺、马来酸酐、N,N’-亚甲基双丙烯酰胺的重量份数分别为5~10份、2~3份、0.05~0.1份;所述反应液B中:硝酸铈铵、纤维素纳米纤维、乙烯基修饰二氧化硅的重量份数分别为1~3份、2~6份、0.2~0.5份。
作为优选方案,所述乙烯基修饰二氧化硅的制备方法为:将乙烯基三乙氧基硅烷与二氧化硅反应,得到乙烯基修饰二氧化硅。
作为优选方案,所述氯化亚铁和氯化铁的混合溶液中,氯化亚铁和氯化铁的摩尔比为1:2;所述氨水的浓度为1mol/L。
一种由前述制备方法得到的温敏性水凝胶在重金属离子吸附中的用途。
作为优选方案,所述重金属离子为铜离子。
本发明的机理在于:
通过热致相分离方法制备纤维素纳米纤维。通过自由基引发聚合,将N-异丙基丙烯酰胺和马来酸酐共聚到纤维素链上。最后通过共沉淀方法将具有磁性的四氧化三铁复合到水凝胶上。
利用N-异丙基丙烯酰胺上的氨基和马来酸酐水解后产生的羧基对铜离子的配位螯合起到吸附作用。利用纤维素纳米纤维的高孔隙率和大比表面积,提高其吸附容量。利用水凝胶上Fe3O4的磁性,有利于水凝胶吸附后的回收循环使用。乙烯基修饰二氧化硅的加入为了提高水凝胶的孔隙率,提高其溶胀率和吸附容量。
与现有技术相比,本发明具有如下的有益效果:
1、将N-异丙基丙烯酰胺和马来酸酐接枝到具有生物相容性的纤维素纳米纤维上,缩小了水凝胶的体积尺寸,增大了比表面积和孔隙率,溶胀率大大提高,从而提高铜离子的吸附容量;
2、乙烯基修饰二氧化硅的加入,形成了非连续的网络孔结构,孔隙率提高,溶胀率提高,吸附容量也随之提高;
3、通过热致相分离方法制备纤维素纳米纤维,工艺简单、产量高,非常适合于工业化生产。
附图说明
通过阅读参照以下附图对非限制性实施例所作的详细描述,本发明的其它特征、目的和优点将会变得更明显:
图1本发明中实施例1制备的纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)/Fe3O4磁性复合水凝胶扫描电镜图;
图2本发明中实施例1制备的纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)/Fe3O4磁性复合水凝胶温度与溶胀率的关系;
图3本发明中实施例1制备的纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)/Fe3O4磁性复合水凝胶的吸附动力学曲线。
具体实施方式
下面结合具体实施例对本发明进行详细说明。以下实施例将有助于本领域的技术人员进一步理解本发明,但不以任何形式限制本发明。应当指出的是,对本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进。这些都属于本发明的保护范围。
实施例1
1)纤维素纳米纤维的制备
将1g四氢呋喃和10g N,N’-二甲基甲酰胺加入血清瓶中,后加入将0.3g醋酸纤维素,搅拌溶解,形成澄清透明溶液。将溶液倒入培养皿中,-20℃下冰箱冷冻处理3h。结束后取出,放入冰水混合物中,每6h换一次蒸馏水,换4次。最后冷冻干燥得到醋酸纤维素纳米纤维;将醋酸纤维素纳米纤维浸泡在0.1mol/L的NaOH/乙醇溶液中24h,后用蒸馏水洗涤,直至洗涤液pH值为7。冷冻干燥得到纤维素纳米纤维。
2)纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶的制备。
将1g乙烯基三乙氧基硅烷溶解在15mL乙醇中,将1g二氧化硅超声分散在10mL的乙醇中。将乙烯基三乙氧基硅烷溶液加入二氧化硅混合液中,超声处理2h,离心分离、乙醇洗涤,50℃真空干燥,得到乙烯基修饰二氧化硅。
将0.6g N-异丙基丙烯酰胺、0.2g马来酸酐、0.008g N,N’-亚甲基双丙烯酰胺溶解在15mL 1mol/L硝酸溶液中,得到反应液A;将0.1g硝酸铈铵溶解在15mL 1mol/L硝酸溶液中,加入0.2g纤维素纳米纤维和0.03g乙烯基修饰二氧化硅,得到反应液B;通过恒压滴液漏斗将反应液A逐滴加入反应液B中,反应温度50℃、反应4h,蒸馏水洗涤、采用丙酮索氏提取、抽滤,得到纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶,简写为Cell-g-P(NIPAm-co-MA)纳米纤维水凝胶。
3)Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶的制备。
将0.3g Cell-g-P(NIPAm-co-MA)水凝胶浸泡在100mL氯化亚铁(0.0852g)和氯化铁(0.2316g)溶液中,加入10mL 1mol/L氨水,反应9h,得到Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶,即用于铜离子吸附的温敏性水凝胶。
Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶的扫描电镜图如图1所示,水凝胶呈现多孔纤维状结构,纤维直径为178±100nm,水凝胶的孔隙率和比表面积分别为93.8%和24.4m2/g、磁化强度为0.022emu/g。图2为Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶溶胀比随温度变化曲线,Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶在28℃开始快速失水,约40℃达到平衡,在36.2℃附近出现了良好的温度敏感特性。
将50mL浓度为500mg/L的Cu2+溶液加入锥形瓶中,用NaOH或HCl调节pH=7.0。将10mg水凝胶加入上述溶液中,25℃,分别恒温水浴震荡10、20、50、100、200、300、400、500、800、1200和1500min后,取上层清液过滤。采用原子吸收光谱仪测量溶液中Cu2+浓度,计算吸附后溶液中Cu2+浓度,吸附曲线如图3所示。在0-300min内,吸附量随吸附时间急剧增加,300-500min吸附量逐渐趋缓,500min后达到吸附平衡,纤维水凝胶对Cu2+的饱和吸附量达到390.2mg/g。
实施例2
1)纤维素纳米纤维的制备
将2g四氢呋喃和8g N,N’-二甲基甲酰胺加入血清瓶中,后加入将0.2g醋酸纤维素,搅拌溶解,形成澄清透明溶液。将溶液倒入培养皿中,-25℃下冰箱冷冻处理2.5h。结束后取出,放入冰水混合物中,每6h换一次蒸馏水,换4次。最后冷冻干燥得到醋酸纤维素纳米纤维;将醋酸纤维素纳米纤维浸泡在0.15mol/L的NaOH/乙醇溶液中24h,后用蒸馏水洗涤,直至洗涤液pH值为7。冷冻干燥得到纤维素纳米纤维。
2)纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶的制备。
将1g乙烯基三乙氧基硅烷溶解在15mL乙醇中,将1g二氧化硅超声分散在10mL的乙醇中。将乙烯基三乙氧基硅烷溶液加入二氧化硅混合液中,超声处理2h,离心分离、乙醇洗涤,50℃真空干燥,得到乙烯基修饰二氧化硅。
将0.4g N-异丙基丙烯酰胺、0.28g马来酸酐、0.01g N,N’-亚甲基双丙烯酰胺溶解在15mL 1mol/L硝酸溶液中,得到反应液A;将0.3g硝酸铈铵溶解在15mL 1mol/L硝酸溶液中,加入0.3g纤维素纳米纤维和0.04g乙烯基修饰二氧化硅,得到反应液B;通过恒压滴液漏斗将反应液A逐滴加入反应液B中,反应温度45℃、反应3h,蒸馏水洗涤、采用丙酮索氏提取、抽滤,得到纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶,简写为Cell-g-P(NIPAm-co-MA)纳米纤维水凝胶。
3)Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶的制备。
将0.3g Cell-g-P(NIPAm-co-MA)水凝胶浸泡在100mL氯化亚铁(0.0852g)和氯化铁(0.2316g)溶液中,加入10mL 1mol/L氨水,反应6h,得到Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶,即用于铜离子吸附的温敏性水凝胶。
Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶中纤维直径为170±70nm,水凝胶的孔隙率和比表面积分别为91.8%和26.1m2/g、磁化强度为0.024emu/g。Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶对Cu2+的饱和吸附量达到410.1mg/g。
实施例3
1)纤维素纳米纤维的制备
将3g四氢呋喃和7g N,N’-二甲基甲酰胺加入血清瓶中,后加入将0.3g醋酸纤维素,搅拌溶解,形成澄清透明溶液。将溶液倒入培养皿中,-20℃下冰箱冷冻处理3h。结束后取出,放入冰水混合物中,每6h换一次蒸馏水,换4次。最后冷冻干燥得到醋酸纤维素纳米纤维;将醋酸纤维素纳米纤维浸泡在0.15mol/L的NaOH/乙醇溶液中24h,后用蒸馏水洗涤,直至洗涤液pH值为7。冷冻干燥得到纤维素纳米纤维。
2)纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶的制备。
将1g乙烯基三乙氧基硅烷溶解在15mL乙醇中,将1g二氧化硅超声分散在10mL的乙醇中。将乙烯基三乙氧基硅烷溶液加入二氧化硅混合液中,超声处理2h,离心分离、乙醇洗涤,50℃真空干燥,得到乙烯基修饰二氧化硅。
将0.5g N-异丙基丙烯酰胺、0.25g马来酸酐、0.008g N,N’-亚甲基双丙烯酰胺溶解在15mL 1mol/L硝酸溶液中,得到反应液A;将0.2g硝酸铈铵溶解在15mL 1mol/L硝酸溶液中,加入0.5g纤维素纳米纤维和0.05g乙烯基修饰二氧化硅,得到反应液B;通过恒压滴液漏斗将反应液A逐滴加入反应液B中,反应温度40℃、反应3h,蒸馏水洗涤、采用丙酮索氏提取、抽滤,得到纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶,简写为Cell-g-P(NIPAm-co-MA)纳米纤维水凝胶。
3)Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶的制备。
将0.4g Cell-g-P(NIPAm-co-MA)水凝胶浸泡在100mL氯化亚铁(0.0852g)和氯化铁(0.2316g)溶液中,加入10mL 1mol/L氨水,反应6h,得到Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶,即用于铜离子吸附的温敏性水凝胶。
Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶中纤维直径为189±90nm,水凝胶的孔隙率和比表面积分别为92.1%和23.1m2/g、磁化强度为0.020emu/g。Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶对Cu2+的饱和吸附量达到380.1mg/g。
实施例4
1)纤维素纳米纤维的制备
将2g四氢呋喃和8g N,N’-二甲基甲酰胺加入血清瓶中,后加入将0.45g醋酸纤维素,搅拌溶解,形成澄清透明溶液。将溶液倒入培养皿中,-15℃下冰箱冷冻处理3h。结束后取出,放入冰水混合物中,每6h换一次蒸馏水,换4次。最后冷冻干燥得到醋酸纤维素纳米纤维;将醋酸纤维素纳米纤维浸泡在0.2mol/L的NaOH/乙醇溶液中24h,后用蒸馏水洗涤,直至洗涤液pH值为7。冷冻干燥得到纤维素纳米纤维。
2)纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶的制备。
将1g乙烯基三乙氧基硅烷溶解在15mL乙醇中,将1g二氧化硅超声分散在10mL的乙醇中。将乙烯基三乙氧基硅烷溶液加入二氧化硅混合液中,超声处理2h,离心分离、乙醇洗涤,50℃真空干燥,得到乙烯基修饰二氧化硅。
将0.7g N-异丙基丙烯酰胺、0.2g马来酸酐、0.005g N,N’-亚甲基双丙烯酰胺溶解在15mL 1mol/L硝酸溶液中,得到反应液A;将0.2g硝酸铈铵溶解在15mL1mol/L硝酸溶液中,加入0.4g纤维素纳米纤维和0.02g乙烯基修饰二氧化硅,得到反应液B;通过恒压滴液漏斗将反应液A逐滴加入反应液B中,反应温度40℃、反应4h,蒸馏水洗涤、采用丙酮索氏提取、抽滤,得到纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶,简写为Cell-g-P(NIPAm-co-MA)纳米纤维水凝胶。
3)Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶的制备。
将0.2g Cell-g-P(NIPAm-co-MA)水凝胶浸泡在100mL氯化亚铁(0.0852g)和氯化铁(0.2316g)溶液中,加入10mL 1mol/L氨水,反应8h,得到Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶,即用于铜离子吸附的温敏性水凝胶。
Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶中纤维直径为169±80nm,水凝胶的孔隙率和比表面积分别为93.2%和22.1m2/g、磁化强度为0.025emu/g。Cell-g-P(NIPAm-co-MA)/Fe3O4磁性纳米纤维复合水凝胶对Cu2+的饱和吸附量达到397.1mg/g。
对比例1
与实施例1不同之处在于:步骤1)将醋酸纤维素溶解在四氢呋喃和N,N’-二甲基甲酰胺混合溶剂中,后采用流延成膜方法制备纤维素流延膜。
后续步骤与实施例1相同,最终得到纤维素流延膜接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)/Fe3O4磁性复合水凝胶。该水凝胶的孔隙率和比表面积分别为60.3%和1.19m2/g。相比较于纤维膜水凝胶,孔隙率和比表面积大大缩小。主要因为无法像纤维膜水凝胶一样形成多孔结构。流延膜水凝胶对Cu2+的饱和吸附量为120.1m2/g。
对比例2
与实施例1不同之处在于:步骤2)中乙烯基修饰二氧化硅的添加量为0。最终得到纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)/Fe3O4磁性复合水凝胶。
纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)/Fe3O4磁性复合水凝胶中纤维直径为161±55nm。孔隙率和比表面积分别为81.1%和15.12m2/g。纤维水凝胶对Cu2+的饱和吸附量达到267.78mg/g。反应体系中加入乙烯基修饰二氧化硅的主要目的是为了提高水凝胶的孔隙率和比表面积,而进一步提高其重金属吸附容量。
对比例3
与实施例1不同之处在于:步骤2)中马来酸酐的添加量为0。最终得到纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺)水凝胶。该水凝胶中纤维直径为151±78nm,水凝胶的孔隙率和比表面积分别为67.2%和0.45m2/g。该水凝胶对Cu2+的饱和吸附量达到110.6mg/g。
以上对本发明的具体实施例进行了描述。需要理解的是,本发明并不局限于上述特定实施方式,本领域技术人员可以在权利要求的范围内做出各种变形或修改,这并不影响本发明的实质内容。
Claims (10)
1.一种温敏性水凝胶的制备方法,其特征在于,包括如下步骤:
制备醋酸纤维素纳米纤维;
将所述醋酸纤维素纳米纤维用碱液进行脱乙酰化,得到纤维素纳米纤维;
利用所述纤维素纳米纤维制备纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶;
将所述纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶浸泡在氯化亚铁和氯化铁的混合溶液中,加入氨水进行反应,得到纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)/Fe3O4磁性纳米纤维复合水凝胶,即所述温敏性水凝胶。
2.如权利要求1所述的温敏性水凝胶的制备方法,其特征在于,所述醋酸纤维素纳米纤维的制备方法为:
将醋酸纤维素溶解在四氢呋喃和N,N’-二甲基甲酰胺的混合溶剂中,得到淬火液,将所述淬火液在-30~-15℃下进行淬火后,用蒸馏水洗涤除去四氢呋喃和N,N’-二甲基甲酰胺,冷冻干燥得到的醋酸纤维素纳米纤维。
3.如权利要求2所述的温敏性水凝胶的制备方法,其特征在于,所述淬火液中,醋酸纤维素、四氢呋喃和N,N’-二甲基甲酰胺的重量份数分别为0.2~0.5份、1~3份、5~10份。
4.如权利要求1所述的温敏性水凝胶的制备方法,其特征在于,所述碱液为NaOH的乙醇溶液,其中NaOH的浓度为0.1~0.2mol/L。
5.如权利要求1所述的温敏性水凝胶的制备方法,其特征在于,所述纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶的制备方法为:
将N-异丙基丙烯酰胺、马来酸酐、N,N’-亚甲基双丙烯酰胺溶解在硝酸溶液中,得到反应液A;
将硝酸铈铵溶解在硝酸溶液中,加入乙烯基修饰二氧化硅和所述纤维素纳米纤维,得到反应液B;
通过恒压滴液漏斗将反应液A逐滴加入反应液B中,在30~60℃下进行反应后,依次采用蒸馏水洗涤,采用丙酮索氏提取、抽滤,得到纤维素纳米纤维接枝聚(N-异丙基丙烯酰胺-co-马来酸酐)水凝胶。
6.如权利要求5所述的温敏性水凝胶的制备方法,其特征在于,所述反应液A中:N-异丙基丙烯酰胺、马来酸酐、N,N’-亚甲基双丙烯酰胺的重量份数分别为5~10份、2~3份、0.05~0.1份;所述反应液B中:硝酸铈铵、纤维素纳米纤维、乙烯基修饰二氧化硅的重量份数分别为1~3份、2~6份、0.2~0.5份。
7.如权利要求5所述的温敏性水凝胶的制备方法,其特征在于,所述乙烯基修饰二氧化硅的制备方法为:将乙烯基三乙氧基硅烷与二氧化硅反应,得到乙烯基修饰二氧化硅。
8.如权利要求1所述的温敏性水凝胶的制备方法,其特征在于,所述氯化亚铁和氯化铁的混合溶液中,氯化亚铁和氯化铁的摩尔比为1:2;所述氨水的浓度为1mol/L。
9.一种由权利要求1~8中任意一项所述制备方法得到的温敏性水凝胶在重金属离子吸附中的用途。
10.如权利要求9所述的用途,其特征在于,所述重金属离子为铜离子。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811214515.6A CN109364889B (zh) | 2018-10-18 | 2018-10-18 | 一种温敏性水凝胶的制备方法及其用途 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811214515.6A CN109364889B (zh) | 2018-10-18 | 2018-10-18 | 一种温敏性水凝胶的制备方法及其用途 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN109364889A true CN109364889A (zh) | 2019-02-22 |
CN109364889B CN109364889B (zh) | 2021-08-10 |
Family
ID=65400306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811214515.6A Active CN109364889B (zh) | 2018-10-18 | 2018-10-18 | 一种温敏性水凝胶的制备方法及其用途 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109364889B (zh) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110423363A (zh) * | 2019-09-17 | 2019-11-08 | 安徽农业大学 | 一种高强度超高弹力水凝胶的制备方法及其应用 |
CN110903432A (zh) * | 2019-11-08 | 2020-03-24 | 上海交通大学 | 基于磁性纤维素纳米晶的光热响应药物缓释水凝胶的制备 |
CN110947371A (zh) * | 2019-12-23 | 2020-04-03 | 江南大学 | 一种改性纤维素基除磷吸附剂的制备方法 |
CN111877019A (zh) * | 2020-08-06 | 2020-11-03 | 晋江瑞碧科技有限公司 | 一种导电水凝胶的制备方法 |
CN111926567A (zh) * | 2020-08-06 | 2020-11-13 | 晋江瑞碧科技有限公司 | 一种温敏性导电水凝胶的制备方法 |
WO2021054329A1 (ja) * | 2019-09-20 | 2021-03-25 | 国立大学法人広島大学 | 吸着剤の使用方法、及び、吸着剤セット |
CN112851860A (zh) * | 2021-01-08 | 2021-05-28 | 杭州所予科技有限公司 | 一种可降解的纤维素-聚丙烯酰胺复合保水剂和制备方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0311566B1 (en) * | 1987-10-05 | 1993-03-24 | Ciba-Geigy Ag | Thermotropic biphilic hydrogels and hydroplastics |
CN103769216A (zh) * | 2014-01-16 | 2014-05-07 | 陕西师范大学 | 一种具有温敏性和磁性能的纳米银催化剂及其制备方法 |
CN105175752A (zh) * | 2015-10-23 | 2015-12-23 | 福州大学 | 一种多重响应性pNIPAAm/(mPEG-g-CMCS)水凝胶 |
CN106975465A (zh) * | 2017-04-01 | 2017-07-25 | 东华大学 | 功能化聚乙烯亚胺接枝多孔纳米纤维吸附材料及其制备 |
CN107376869A (zh) * | 2017-07-12 | 2017-11-24 | 马鞍山科信网络科技有限公司 | 一种高吸附性磁性聚乙烯亚胺‑聚乙烯醇‑纤维的制备方法 |
-
2018
- 2018-10-18 CN CN201811214515.6A patent/CN109364889B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0311566B1 (en) * | 1987-10-05 | 1993-03-24 | Ciba-Geigy Ag | Thermotropic biphilic hydrogels and hydroplastics |
CN103769216A (zh) * | 2014-01-16 | 2014-05-07 | 陕西师范大学 | 一种具有温敏性和磁性能的纳米银催化剂及其制备方法 |
CN105175752A (zh) * | 2015-10-23 | 2015-12-23 | 福州大学 | 一种多重响应性pNIPAAm/(mPEG-g-CMCS)水凝胶 |
CN106975465A (zh) * | 2017-04-01 | 2017-07-25 | 东华大学 | 功能化聚乙烯亚胺接枝多孔纳米纤维吸附材料及其制备 |
CN107376869A (zh) * | 2017-07-12 | 2017-11-24 | 马鞍山科信网络科技有限公司 | 一种高吸附性磁性聚乙烯亚胺‑聚乙烯醇‑纤维的制备方法 |
Non-Patent Citations (6)
Title |
---|
M. KURDTABAR ET AL.: ""Synthesis and characterization of collagen‑based hydrogel nanocomposites for adsorption of Cd2+, Pb2+, methylene green and crystal violet"", 《IRAN POLYM J》 * |
何领好,王明花主编: "《功能高分子材料》", 31 August 2016, 武汉:华中科技大学出版社 * |
成瑾瑾: ""温度敏感性水凝胶的制备及其在铜离子吸附中的应用"", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
王云普等: ""聚N-异丙基丙烯酰胺/纳米SiO2复合水凝胶的合成及溶胀性能"", 《高分子学报》 * |
陈培珍等: ""丁二酸酐接枝纤维素纳米纤维膜及其重金属离子吸附"", 《应用化学》 * |
陈培珍等: ""纤维素纳米纤维接枝聚( N-异丙基丙烯酰胺)水凝胶的制备与表征"", 《应用化学》 * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110423363B (zh) * | 2019-09-17 | 2022-02-08 | 安徽农业大学 | 一种高强度超高弹力水凝胶的制备方法及其应用 |
CN110423363A (zh) * | 2019-09-17 | 2019-11-08 | 安徽农业大学 | 一种高强度超高弹力水凝胶的制备方法及其应用 |
WO2021054329A1 (ja) * | 2019-09-20 | 2021-03-25 | 国立大学法人広島大学 | 吸着剤の使用方法、及び、吸着剤セット |
JP7442844B2 (ja) | 2019-09-20 | 2024-03-05 | 国立大学法人広島大学 | 吸着剤の使用方法、及び、吸着剤セット |
CN110903432B (zh) * | 2019-11-08 | 2021-05-18 | 上海交通大学 | 基于磁性纤维素纳米晶的光热响应药物缓释水凝胶的制备 |
CN110903432A (zh) * | 2019-11-08 | 2020-03-24 | 上海交通大学 | 基于磁性纤维素纳米晶的光热响应药物缓释水凝胶的制备 |
CN110947371B (zh) * | 2019-12-23 | 2021-10-19 | 江南大学 | 一种改性纤维素基除磷吸附剂的制备方法 |
CN110947371A (zh) * | 2019-12-23 | 2020-04-03 | 江南大学 | 一种改性纤维素基除磷吸附剂的制备方法 |
CN111926567A (zh) * | 2020-08-06 | 2020-11-13 | 晋江瑞碧科技有限公司 | 一种温敏性导电水凝胶的制备方法 |
CN111877019A (zh) * | 2020-08-06 | 2020-11-03 | 晋江瑞碧科技有限公司 | 一种导电水凝胶的制备方法 |
CN111877019B (zh) * | 2020-08-06 | 2022-11-18 | 晋江瑞碧科技有限公司 | 一种导电水凝胶的制备方法 |
CN111926567B (zh) * | 2020-08-06 | 2023-06-30 | 武夷学院 | 一种温敏性导电水凝胶的制备方法 |
CN112851860A (zh) * | 2021-01-08 | 2021-05-28 | 杭州所予科技有限公司 | 一种可降解的纤维素-聚丙烯酰胺复合保水剂和制备方法 |
Also Published As
Publication number | Publication date |
---|---|
CN109364889B (zh) | 2021-08-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109364889A (zh) | 一种温敏性水凝胶的制备方法及其用途 | |
Liu et al. | Rapid and efficient removal of heavy metal and cationic dye by carboxylate-rich magnetic chitosan flocculants: role of ionic groups | |
CN109295713B (zh) | 基于纤维素纳米纤维的磁性复合水凝胶的制备方法及用途 | |
CN104479174B (zh) | 一种基于纤维素的磁性气凝胶材料及其制备方法 | |
CN113336959B (zh) | 磁性接枝聚合物载体的制备方法、制备的载体及其应用 | |
CN108212114A (zh) | 一种铜离子印迹复合吸附材料及其制备方法 | |
CN104437395A (zh) | 一种耐酸性磁性壳聚糖微球、制备方法及其应用 | |
CN109174034A (zh) | 一种铜离子印迹壳聚糖/羧甲基纤维素钠复合吸附剂及其制备方法 | |
CN107213875B (zh) | 一种吸附重金属离子的改性苎麻纤维多孔微球吸附剂及其制备方法与应用 | |
CN108993452B (zh) | 一种用于铜离子吸附的磁性复合水凝胶的制备方法 | |
CN111068632A (zh) | 一种铅离子复合吸附剂及其制备方法 | |
CN109647364A (zh) | 一种用于重金属处理的可回收磁性吸附材料的制备方法 | |
CN112337427B (zh) | 一种La@Zr@SiO2@膨润土复合除磷吸附剂的制备方法 | |
CN108295820A (zh) | 一种植物纤维基吸附材料的制备方法及其应用 | |
CN110947371B (zh) | 一种改性纤维素基除磷吸附剂的制备方法 | |
CN110898817A (zh) | 一种聚乙烯亚胺改性磁性竹粉材料的制备方法及其应用 | |
CN107159157A (zh) | 含有重金属离子印迹交联壳聚糖纳米纤维膜及其制备方法 | |
CN109012610A (zh) | 铈改性壳聚糖除磷颗粒吸附剂的制备方法 | |
CN110064381A (zh) | 一种高效去除多种重金属离子的海藻酸盐复合微球及其制备方法和应用 | |
JPS5930722B2 (ja) | 粉粒状多孔質キトサンの製造方法 | |
CN110090627A (zh) | 一种钙离子印迹壳聚糖吸附剂及其制备方法与应用 | |
CN110201648A (zh) | 一种硅藻土表面As(Ⅴ)离子印迹吸附材料的制备方法 | |
CN110339818A (zh) | 一种改性磁性壳聚糖吸附剂的制备方法 | |
CN107042095B (zh) | 一种壳聚糖-铁钛化合物复合吸附剂的制备方法及应用 | |
CN109650602B (zh) | 一种磁性吸附材料去除水体中锑离子的方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
TA01 | Transfer of patent application right | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20210726 Address after: No.16 Wuyi Avenue, Wuyishan City, Nanping City, Fujian Province, 354300 Applicant after: WUYI University Applicant after: WUYISHAN BIKONG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 362201 room 402, building 10, Tianyue, AVIC City, Meiling street, Jinjiang City, Quanzhou City, Fujian Province Applicant before: JINJIANG RUIBI TECHNOLOGY Co.,Ltd. Applicant before: WUYI University |
|
GR01 | Patent grant | ||
GR01 | Patent grant |