CN106749924B - 一种可降解玉米芯生物质保水剂的制备方法 - Google Patents
一种可降解玉米芯生物质保水剂的制备方法 Download PDFInfo
- Publication number
- CN106749924B CN106749924B CN201710100383.3A CN201710100383A CN106749924B CN 106749924 B CN106749924 B CN 106749924B CN 201710100383 A CN201710100383 A CN 201710100383A CN 106749924 B CN106749924 B CN 106749924B
- Authority
- CN
- China
- Prior art keywords
- water
- retaining agent
- modified
- corn core
- degradable
- 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.)
- Expired - Fee Related
Links
- 240000008042 Zea mays Species 0.000 title claims abstract description 45
- 235000002017 Zea mays subsp mays Nutrition 0.000 title claims abstract description 45
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 43
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 title claims abstract description 37
- 235000005822 corn Nutrition 0.000 title claims abstract description 37
- 239000002028 Biomass Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003999 initiator Substances 0.000 claims abstract description 9
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 7
- 238000004132 cross linking Methods 0.000 claims abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 230000005855 radiation Effects 0.000 claims description 12
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 9
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 claims description 8
- 235000009973 maize Nutrition 0.000 claims description 8
- 150000008064 anhydrides Chemical class 0.000 claims description 7
- 235000012054 meals Nutrition 0.000 claims description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 235000009566 rice Nutrition 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- KPGXRSRHYNQIFN-UHFFFAOYSA-N 2-oxoglutaric acid Chemical compound OC(=O)CCC(=O)C(O)=O KPGXRSRHYNQIFN-UHFFFAOYSA-N 0.000 claims description 3
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 3
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 claims description 3
- VGGRCVDNFAQIKO-UHFFFAOYSA-N formic anhydride Chemical compound O=COC=O VGGRCVDNFAQIKO-UHFFFAOYSA-N 0.000 claims description 3
- 235000011187 glycerol Nutrition 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 3
- 235000019394 potassium persulphate Nutrition 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 2
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 2
- -1 persulfuric acid Ammonium-sodium hydrogensulfite Chemical class 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000006116 polymerization reaction Methods 0.000 abstract description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 239000010977 jade Substances 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 150000008065 acid anhydrides Chemical class 0.000 description 3
- 229920002488 Hemicellulose Polymers 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 208000016261 weight loss Diseases 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
- C08B15/05—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur
- C08B15/06—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur containing nitrogen, e.g. carbamates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
- C08B15/10—Crosslinking of cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/04—Cellulose formate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/06—Cellulose acetate, e.g. mono-acetate, di-acetate or tri-acetate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/12—Preparation of cellulose esters of organic acids of polybasic organic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/14—Hemicellulose; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
- C08F251/02—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof on to cellulose or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
- C08J2201/05—Elimination by evaporation or heat degradation of a liquid phase
- C08J2201/0504—Elimination by evaporation or heat degradation of a liquid phase the liquid phase being aqueous
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
本发明公开了一种可降解玉米芯生物质保水剂的制备方法,是以改性玉米芯、丙烯酰胺为主要原料,加入交联剂、引发剂,通过反应交联聚合而得。本发明采用废弃的玉米芯为原料,大大降低了保水剂的生产成本;充分利用改性玉米芯的表面以及内部有很多细微孔的特殊结构特征,制备可降解保水剂具有很好的吸水性能和降解性能。
Description
技术领域
本发明属于生物质材料技术领域,涉及保水剂,尤其涉及一种可降解玉米芯生物质保水剂的制备方法。
背景技术
我国是农业大国,植物纤维资源丰富,玉米芯是玉米脱去籽粒后的穗轴,一般占玉米穗的20-30%左右。2015/16年度中国玉米产量预计为2.25亿吨,可以副产4000万吨的玉米芯,每年数千万吨的玉米芯被烧掉,既浪费资源又污染环境。对玉米芯深加工不但可以提高玉米副产品的利用价值,又具有较高的社会经济效益和广阔的发展前景。玉米芯含有丰富的纤维素(32%-36%),半纤维素(35%-40%)和木质素(17%-20%),玉米芯粉本身具有海绵结构可吸收四倍于自重的液体,是一种很有发展的吸附材料资源,而且具有许多毛细管作用的纤维状物质。但是通常都是直接将玉米芯粉碎晒干,直接糊化、加交联剂、引发剂等制备可降解生物质保水剂,采用此方法制备的保水剂吸水能力有限,保水时间有限,在干旱的地区使用时,用量大,成本高。
发明内容
为了解决现有技术中存在的上述问题,本发明的目的是提供一种利用改性玉米芯制备可降解生物质保水剂的方法。
本发明采用如下技术方案:
本发明的一种可降解玉米芯生物质保水剂的制备方法,具体包括以下步骤:
A.改性玉米芯:先用粉碎机将干燥的玉米芯粉碎至5-500目,经微波辐射100-300w改性5-20min,然后酸酐改性;所述酸酐改性是将微波辐射后的玉米芯投入0.1-1mol/L酸酐溶液中,在50-90℃下改性4-10h,然后用水冲洗2-3次,烘干,备用;
B.制备可降解生物质保水剂:将步骤A中二次改性后的玉米芯粉末分散于水中,在30-80℃糊化0.5-1h;然后向该分散体系中加入丙烯酰胺,搅拌均匀,在氮气保护下,加入交联剂、引发剂至凝胶生成,最后用乙醇洗涤,干燥,即得可降解玉米芯生物质保水剂。
所述的酸酐溶液是甲酸酐、乙酸酐、邻苯二甲酸酐、马来酸酐中的任意一种。
所述改性玉米芯粉末与丙烯酰胺的质量比为:1:5-1:10。
所述交联剂为:N,N-二甲基甲酰胺、N,N-亚甲基双丙烯酰胺、丙三醇、双氧水中的任意一种。
所述引发剂为:过硫酸铵、过硫酸铵-亚硫酸氢钠、过硫酸钾、2-酮戊二酸中的任意一种。
优选的,所述改性玉米芯粉末与交联剂的质量比为:100:0.5-100:5。
优选的,所述改性玉米芯粉末与引发剂的质量比为:100:1-100:10。
本发明的优点是:
1. 本发明采用废弃的玉米芯为原料,大大降低了保水剂的生产成本;本发明是以改性玉米芯、丙烯酰胺为主要原料,加入交联剂、引发剂,通过反应交联聚合而得。本发明的玉米芯通过两次改性,首先通过对玉米芯微波照射改性,严格控制时间和微波照射强度,使玉米芯内水分蒸发、且通过微波彻底打通玉米芯大分子的内部通道,使其内部通到更为疏松和通畅,吸附率增加。
2.本发明在微波照射一次改性后,再采用酸酐对玉米芯进行二次改性,使酸酐与玉米芯的纤维素、半纤维素和木质素上的羟基发生反应,通过化学反应使玉米芯带有更强和更多的亲水基团,同时还有造孔的作用,进一步增大微孔和提高孔隙率。对玉米芯改性,玉米芯结构具有更多的微孔和孔隙率,吸附性能大大提高。通过本发明的方法制备的保水剂与通用的玉米芯保水剂相比具有良好的吸水性、保水性和降解性能,是一种绿色环保的保水剂。
3.本发明实施例中制备的玉米芯生物质保水剂的吸水率可达到320g/g以上,吸0.9%盐水率为81 g/g以上。通过高吸水树脂能够明显抑制土壤表面的水分蒸发,随着树脂施用量的增加,抑制蒸发作用增强。
本发明保水剂的表征:
1.红外表征
在670-1048cm-1出现的是玉米芯的-CH2-振动吸收峰,说明玉米芯接枝了丙烯酸。
2.热稳定性表征
图2为保水剂热稳定性曲线。从图2可以看出,改性玉米芯保水剂从50℃到410 ℃失重率为71%,400-700℃失重率基本稳定,这是由于保水剂形成了网状结构,使保水剂具有较好的稳定性。
3.扫描电镜表征
图3为保水剂的微观形貌扫描电镜照片。从照片可以看出,改性玉米芯保水剂吸水前有大量的微孔结构,便面粗糙,比表面积大。从图4可以看出,与现有的玉米芯为主料生产的保水剂相比本发明制备的保水剂具有大量的微孔,大量的微孔可以容纳更多的水,吸水后比较饱满。
附图说明
图1. 本发明保水剂的红外光谱图;
图2. 保水剂的热稳定性曲线图;
图3. 本发明的改性玉米芯保水剂吸水前的扫描电镜图;
图4. 本发明的改性玉米芯保水剂吸水后的扫描电镜图。
具体实施方式
实施例1
一种可降解玉米芯生物质保水剂的制备方法,其具体制备工艺如下:先用粉碎机将干燥的玉米芯粉碎至200目,称取1000g在100w下微波辐射改性10min,将微波辐射后的玉米芯投入2L 0.5mol/L的乙酸酐溶液中,在60℃下反应4h,然后用水冲洗2-3次,烘干,备用。
称取二次改性后的玉米芯粉末10g分散于150ml水中,在50℃糊化0.5h;然后向体系中加入80g丙烯酰胺,搅拌均匀,在氮气保护下,加入0.12g N,N-亚甲基双丙烯酰胺、0.8g过硫酸铵-亚硫酸氢钠至凝胶生成,最后用95%乙醇洗涤,干燥,即得可降解玉米芯生物质保水剂。
实施例2
一种可降解玉米芯生物质保水剂的制备方法,其具体制备工艺如下:先用粉碎机将干燥的玉米芯粉碎至100目,称取1000g在200w下微波辐射改性5min,将微波辐射后的玉米芯投入4L 1mol/L的甲酸酐溶液中,在30℃下反应10h,然后用水冲洗2-3次,烘干,备用。
称取二次改性后的玉米芯粉末10g分散于200ml水中,在80℃糊化1h;然后向体系中加入50g丙烯酰胺,搅拌均匀,在氮气保护下,加入0.4g N,N-二甲基甲酰胺,0.5g过硫酸铵至凝胶生成,最后用50%乙醇洗涤,干燥,即得可降解玉米芯生物质保水剂。
实施例3
一种可降解玉米芯生物质保水剂的制备方法,其具体制备工艺如下:先用粉碎机将干燥的玉米芯粉碎至500目,称取1000g在100w下微波辐射改性20min,将微波辐射后的玉米芯投入2L 0.8mol/L的邻苯二甲酸酐溶液中,在80℃下反应6h,然后用水冲洗2-3次,烘干,备用。
称取二次改性后的玉米芯粉末10g分散于100ml水中,在65℃糊化0.8h;然后向体系中加入100g丙烯酰胺,搅拌均匀,在氮气保护下,加入0.1g 丙三醇,0.6g过硫酸钾,最后用50%乙醇洗涤,干燥,即得可降解玉米芯生物质保水剂。
实施例4
一种可降解玉米芯生物质保水剂的制备方法,其具体制备工艺如下:先用粉碎机将干燥的玉米芯粉碎至50目,称取1000g在150w下微波辐射改性15min,将微波辐射后的玉米芯投入3L 0.3mol/L的马来酸酐溶液中,在50℃下反应5h,然后用水冲洗2-3次,烘干,备用。
称取二次改性后的玉米芯粉末10g分散于300ml水中,在30℃糊化0.5h;然后向体系中加入60g丙烯酰胺,搅拌均匀,在氮气保护下,加入0.4g 双氧水,0.2g 2-酮戊二酸至凝胶生成至凝胶生成,最后用95%乙醇洗涤,干燥,即得可降解玉米芯生物质保水剂。
Claims (5)
1.一种可降解玉米芯生物质保水剂的制备方法,其特征在于:具体包括如下步骤:
A.改性玉米芯:先用粉碎机将干燥的玉米芯粉碎至5-500目,经微波辐射100-300w改性5-20min,然后酸酐改性:所述酸酐改性是将微波辐射后的玉米芯投入0.1-1mol/L酸酐溶液中,在50-90℃下改性4-10h,然后用水冲洗2-3次,烘干,备用;
B.制备可降解生物质保水剂:将步骤A中二次改性后的玉米芯粉末分散于水中,在30-80℃糊化0.5-1h;然后向该分散体系中加入丙烯酰胺,搅拌均匀,在氮气保护下,加入交联剂、引发剂至凝胶生成,最后用乙醇洗涤,干燥,即得可降解玉米芯生物质保水剂;交联剂为: N,N-亚甲基双丙烯酰胺、丙三醇、双氧水中的任意一种;引发剂为:过硫酸铵、过硫酸铵-亚硫酸氢钠、过硫酸钾、2-酮戊二酸中的任意一种。
2.如权利要求1所述一种可降解玉米芯生物质保水剂的制备方法,其特征在于:所述的酸酐溶液是甲酸酐、乙酸酐、邻苯二甲酸酐、马来酸酐中的任意一种。
3.如权利要求1所述一种可降解玉米芯生物质保水剂的制备方法,其特征在于:改性玉米芯粉末与丙烯酰胺的质量比为:1:5-10。
4.如权利要求1或3所述一种可降解玉米芯生物质保水剂的制备方法,其特征在于:改性玉米芯粉末与交联剂的质量比为:100:0.5-5。
5.如权利要求4所述一种可降解玉米芯生物质保水剂的制备方法,其特征在于:改性玉米芯粉末与引发剂的质量比为:100:1-10。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710100383.3A CN106749924B (zh) | 2017-02-23 | 2017-02-23 | 一种可降解玉米芯生物质保水剂的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710100383.3A CN106749924B (zh) | 2017-02-23 | 2017-02-23 | 一种可降解玉米芯生物质保水剂的制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106749924A CN106749924A (zh) | 2017-05-31 |
CN106749924B true CN106749924B (zh) | 2019-03-19 |
Family
ID=58960188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710100383.3A Expired - Fee Related CN106749924B (zh) | 2017-02-23 | 2017-02-23 | 一种可降解玉米芯生物质保水剂的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106749924B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108112446A (zh) * | 2017-12-29 | 2018-06-05 | 杭州欢伯生物技术有限公司 | 一种生物质炭泥及其制备方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108889282B (zh) * | 2018-08-02 | 2021-05-04 | 仲恺农业工程学院 | 一种丙烯酰胺-马来酸酐接枝共聚改性花生壳及其制备方法和作为重金属离子吸附剂的应用 |
CN109275707A (zh) * | 2018-09-08 | 2019-01-29 | 李仁帅 | 一种生物质基可降解果蔬保鲜补水凝胶组合膜 |
CN113428923A (zh) * | 2021-06-17 | 2021-09-24 | 河海大学 | 一种太阳能界面蒸发结构及其制备方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102924688A (zh) * | 2012-11-21 | 2013-02-13 | 上海应用技术学院 | 一种侧链含氟的二异氰酸酯及其制备方法和应用 |
-
2017
- 2017-02-23 CN CN201710100383.3A patent/CN106749924B/zh not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102924688A (zh) * | 2012-11-21 | 2013-02-13 | 上海应用技术学院 | 一种侧链含氟的二异氰酸酯及其制备方法和应用 |
Non-Patent Citations (3)
Title |
---|
丁二酸酐改性的玉米芯对Cu(II)的吸附性能研究;耿卫东等;《水处理技术》;20110430;第37卷(第4期);第37-41页 |
玉米芯改性絮凝剂的制备及应用研究;曹霞霞;《中国优秀硕士学位论文全文数据库 工程科技I辑》;20120615;第B027-444页 |
高吸水性树脂玉米芯接枝共聚物的性能研究;宋艳等;《化工新型材料》;20090731;第37卷(第7期);第111-112、117页 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108112446A (zh) * | 2017-12-29 | 2018-06-05 | 杭州欢伯生物技术有限公司 | 一种生物质炭泥及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
CN106749924A (zh) | 2017-05-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106749924B (zh) | 一种可降解玉米芯生物质保水剂的制备方法 | |
CN104788191B (zh) | 一种超强保水抗旱复合肥料及其制备方法 | |
CN112500530B (zh) | 一种碳酸钙/甘蔗渣纤维素基高吸水树脂及其制备方法 | |
CN102226030B (zh) | 一种制备农作物秸秆基高倍吸水剂的方法 | |
CN105817200B (zh) | 一种碳纳米管/活性炭介孔复合微丸及其制备方法 | |
CN103709330B (zh) | 纤维类保水剂及其制备方法 | |
CN102883591A (zh) | 电磁波吸收体及其制造方法、柔性印刷配线板和电子设备 | |
CN108910876A (zh) | 一种制备生物质活性炭的方法 | |
CN105154094A (zh) | 一种有机土壤改良剂 | |
CN104530467A (zh) | 一种轻质带宽吸波材料的制备方法 | |
CN107011910A (zh) | 一种含膨润土的可降解性高吸水树脂微球及其制备方法 | |
CN105195099A (zh) | 一种β-环糊精改性大孔氨基葡聚糖吸附剂的制备方法 | |
CN105236406A (zh) | 一种超级电容器用球形活性炭的制备方法 | |
CN105540582A (zh) | 一种活性炭球-活性炭复合材料的制备方法 | |
CN109987875A (zh) | 一种高性能混凝土内养护剂的制备方法和应用 | |
CN109456451B (zh) | 一种玉米秸秆基超吸水树脂及其制备方法 | |
CN108752531A (zh) | 硼酸单甘酯单丙烯酸酯高吸水性树脂及其制备方法 | |
CN111286079A (zh) | 一种兼具红外隐身的雷达波吸收复合材料的制备方法 | |
CN101982125A (zh) | 袜子抗紫外线生产工艺 | |
CN113150216B (zh) | 一种农用保水剂及其制备方法 | |
CN106865545A (zh) | 一种高吸附力木质颗粒活性炭的制备方法 | |
CN108610459A (zh) | 一种快速吸收型高吸水性树脂的制备方法 | |
CN108264044B (zh) | 一种碱蓬基超微粉压块活性炭及其制备方法 | |
CN105062417B (zh) | 一种有机‑无机复合纳米微波吸收材料及其制备方法 | |
CN107365469A (zh) | 一种基于硅藻土的柔性复合吸水材料及其制备方法 |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190319 |
|
CF01 | Termination of patent right due to non-payment of annual fee |