CN113151923A - Polyurethane/titanium dioxide composite fiber, photocatalytic woven device, preparation method and application - Google Patents
Polyurethane/titanium dioxide composite fiber, photocatalytic woven device, preparation method and application Download PDFInfo
- Publication number
- CN113151923A CN113151923A CN202110265249.5A CN202110265249A CN113151923A CN 113151923 A CN113151923 A CN 113151923A CN 202110265249 A CN202110265249 A CN 202110265249A CN 113151923 A CN113151923 A CN 113151923A
- Authority
- CN
- China
- Prior art keywords
- titanium dioxide
- polyurethane
- composite fiber
- dioxide composite
- photocatalytic
- 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.)
- Pending
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 54
- 239000004814 polyurethane Substances 0.000 title claims abstract description 54
- 239000002131 composite material Substances 0.000 title claims abstract description 53
- 239000000835 fiber Substances 0.000 title claims abstract description 52
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 47
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000243 solution Substances 0.000 claims abstract description 39
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract description 27
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000009987 spinning Methods 0.000 claims abstract description 21
- 238000002166 wet spinning Methods 0.000 claims abstract description 14
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000011259 mixed solution Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- 238000013033 photocatalytic degradation reaction Methods 0.000 claims description 8
- 239000000806 elastomer Substances 0.000 claims description 6
- 239000003344 environmental pollutant Substances 0.000 claims description 6
- 231100000719 pollutant Toxicity 0.000 claims description 6
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 5
- 230000001112 coagulating effect Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims 6
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims 1
- OVARTBFNCCXQKS-UHFFFAOYSA-N propan-2-one;hydrate Chemical compound O.CC(C)=O OVARTBFNCCXQKS-UHFFFAOYSA-N 0.000 claims 1
- 239000003054 catalyst Substances 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 2
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 15
- 229940043267 rhodamine b Drugs 0.000 description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 10
- 230000015556 catabolic process Effects 0.000 description 8
- 238000006731 degradation reaction Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 7
- 238000009210 therapy by ultrasound Methods 0.000 description 6
- 238000005286 illumination Methods 0.000 description 5
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011943 nanocatalyst Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 241000264877 Hippospongia communis Species 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- WHQSYGRFZMUQGQ-UHFFFAOYSA-N n,n-dimethylformamide;hydrate Chemical compound O.CN(C)C=O WHQSYGRFZMUQGQ-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 239000003495 polar organic solvent Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/20—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state
- B01J35/23—Catalysts, in general, characterised by their form or physical properties characterised by their non-solid state in a colloidal state
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/58—Fabrics or filaments
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Catalysts (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a polyurethane/titanium dioxide composite fiber, a photocatalytic woven device, a preparation method and an application, and the preparation method comprises the following steps: mixing sodium dodecyl sulfate and N, N-dimethylformamide to obtain a mixed solution; adding nano titanium dioxide into the mixed solution, and uniformly dispersing the nano titanium dioxide; adding polyurethane into the mixture, and uniformly mixing to obtain a spinning solution; and further obtaining the polyurethane/titanium dioxide composite fiber by adopting a wet spinning method. The titanium dioxide is loaded on the flexible polyurethane substrate by wet spinning, so that the problems that the catalyst is difficult to recover and cannot be recycled can be solved.
Description
Technical Field
The invention belongs to the field of materials, and particularly relates to a polyurethane/titanium dioxide composite fiber, a photocatalytic braided device, a preparation method and application.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The nano titanium dioxide is an important semiconductor material, has very excellent optical property and chemical stability, can effectively degrade pollutants under the action of sunlight, and is a photocatalytic material which is widely applied and most researched in the world at present.
The nanometer titanium dioxide is white loose powder, and has the problems of easy agglomeration and difficult recovery in the use process, thereby seriously limiting the large-scale application of the nanometer titanium dioxide in the field of sewage treatment. To overcome this drawback, loading nanocatalysts on macroscopic-sized supports is currently an effective strategy to increase the efficiency of nanocatalysts use. The conventional catalyst carriers comprise activated carbon felt, paper honeycombs, foamed aluminum, wire meshes and the like, and the inventor finds that the adhesion force of the carriers to the photocatalyst is not strong enough, the adhesion amount is not enough, and the loaded nano titanium dioxide is easy to fall off, so that the service life of the product is short.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a polyurethane/titanium dioxide composite fiber, a photocatalytic braided device, a preparation method and application.
In order to solve the above technical problems, the present invention provides the following technical solutions in one or more embodiments:
in a first aspect, the present invention provides a method for preparing a polyurethane/titanium dioxide composite fiber, comprising the steps of:
mixing sodium dodecyl sulfate and N, N-dimethylformamide to obtain a mixed solution;
adding nano titanium dioxide into the mixed solution, and uniformly dispersing the nano titanium dioxide;
adding polyurethane into the mixture, and uniformly mixing to obtain a spinning solution;
and further obtaining the polyurethane/titanium dioxide composite fiber by adopting a wet spinning method.
In a second aspect, the invention provides a polyurethane/titanium dioxide composite fiber prepared by the above preparation method.
In a third aspect, the invention provides a photocatalytic braided device, which is braided by the polyurethane/titanium dioxide composite fiber.
In a fourth aspect, the polyurethane/titanium dioxide composite fiber or the photocatalytic woven device is applied to photocatalytic degradation of pollutants.
Compared with the prior art, one or more technical schemes of the invention have the following beneficial effects:
the titanium dioxide is loaded on the flexible polyurethane substrate by wet spinning, so that the problems that the catalyst is difficult to recover and cannot be recycled can be solved.
The composite fiber has the advantages of simple preparation process, low cost, easy recovery, reusability and the like, and can be widely applied to the field of environmental pollution treatment.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a diagram of a photocatalytic woven device based on polyurethane/titanium dioxide composite fibers in an embodiment of the present invention;
FIG. 2 is a diagram of a device for testing photocatalytic performance of a photocatalytic knitted device based on polyurethane/titanium dioxide composite fibers according to an embodiment of the present invention;
FIG. 3 is a graph showing rhodamine B degradation of a photocatalytic knitted device based on polyurethane/titanium dioxide composite fibers in an embodiment of the present invention;
FIG. 4 is a graph showing the stability evaluation experiment result of the photocatalytic braided device based on polyurethane/titanium dioxide composite fibers in the embodiment of the present invention;
fig. 5 is an SEM image of a polyurethane/titanium dioxide-based composite fiber according to an embodiment of the present invention.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In a first aspect, the present invention provides a method for preparing a polyurethane/titanium dioxide composite fiber, comprising the steps of:
mixing sodium dodecyl sulfate and N, N-dimethylformamide to obtain a mixed solution;
adding nano titanium dioxide into the mixed solution, and uniformly dispersing the nano titanium dioxide;
adding polyurethane into the mixture, and uniformly mixing to obtain a spinning solution;
and further obtaining the polyurethane/titanium dioxide composite fiber by adopting a wet spinning method.
Wherein the functions of the components are as follows:
sodium lauryl sulfate: is used for uniformly dispersing the nano titanium dioxide in the spinning solution.
N, N-dimethylformamide: is a solvent with good performance, and can effectively dissolve polyurethane.
Polyurethane: is an elastomer with excellent performance and is used as a carrier of the nano titanium dioxide.
In some embodiments, the mass ratio of the nano titanium dioxide, the sodium dodecyl sulfate, the N, N-dimethylformamide and the polyurethane is 0.05-1: 0.1-4: 10: 0.5-1.5. The mass ratio of the components can directly influence the mechanical property and the photocatalytic property of the composite fiber. When the content of the nano titanium dioxide is higher, the nano titanium dioxide is easy to agglomerate, and finally the prepared composite fiber is easy to break; when the content of the nano titanium dioxide is low, the photocatalytic performance of the composite fiber is relatively poor.
In some embodiments, after the polyurethane is added, the water bath is heated until the solids are dissolved.
Further, the temperature of the water bath heating is 95-100 ℃.
In some embodiments, the polyurethane is a thermoplastic polyurethane elastomer rubber.
In some embodiments, the coagulation liquid for wet spinning is an aqueous acetone solution with a mass concentration of 50% to 70%. Wet spinning is a multi-component diffusion process. When the spinning dope enters the coagulation liquid, the solvent in the dope trickle diffuses into the coagulation liquid, and the coagulant diffuses into the trickle, thus causing phase transition. Acetone is a common polar organic solvent, is mutually soluble with water and N, N-dimethylformamide and is commonly used as a solidification solution for wet spinning.
Furthermore, the spinning rate of the wet spinning is 60-80 mL/h. The wet spinning speed is limited by the double diffusion speed of the solvent and the coagulant, the fluid resistance of the coagulating liquid and the like, and the size of the wet spinning speed directly influences the spinning quality of the composite fiber, such as: the speed and thickness of the filamentation, etc.
In a second aspect, the invention provides a polyurethane/titanium dioxide composite fiber prepared by the above preparation method.
In a third aspect, the invention provides a photocatalytic braided device, which is braided by the polyurethane/titanium dioxide composite fiber.
In a fourth aspect, the polyurethane/titanium dioxide composite fiber or the photocatalytic woven device is applied to photocatalytic degradation of pollutants.
In some embodiments, the contaminant is a rhodamine B dye.
Example 1
The preparation method based on the polyurethane/titanium dioxide composite fiber comprises the following specific steps:
s1, placing 0.8g of sodium dodecyl sulfate in a 10.0g N N-dimethylformamide solution, and carrying out ultrasonic treatment until the sodium dodecyl sulfate is completely dissolved;
s2, adding 0.2g of nano titanium dioxide into the solution prepared in the step S1, and performing ultrasonic treatment for 50min to uniformly disperse the titanium dioxide in the solution;
s3, adding 1.0g of thermoplastic polyurethane elastomer rubber into the solution prepared in the step S2, heating in a water bath for 4 hours until the solid is dissolved, wherein the temperature of the water bath is 98 ℃, and cooling the solution to room temperature to obtain a spinning solution;
s4, preparing 65% acetone aqueous solution as spinning solidification liquid;
s5, extruding the spinning solution prepared in the step S3 into coagulating liquid from a spinning nozzle at a speed of 75mL/h to obtain the composite fiber.
Experiment for degrading rhodamine B through photocatalysis
The polyurethane/titanium dioxide composite fibers were woven into devices having a size of about 1.5cm by 1.5cm as shown in fig. 1, and then weighed and the mass of the device recorded. Placing the device in 5mg/L rhodamine B solution, adsorbing in the dark for 30min, turning on xenon lamp illumination, sampling at intervals of 30min, and totally illuminating for 240 min. Finally, the absorbance of the solution was measured by an ultraviolet spectrophotometer at a wavelength of 554nm, as shown in FIG. 2.
Fig. 3 is a graph showing the degradation result of the rhodamine B dye solution by the photocatalytic woven device based on the polyurethane/titanium dioxide composite fiber prepared in example 1. It can be seen that the device has a certain adsorption capacity for rhodamine B. Under the illumination condition, the device can realize the efficient degradation of rhodamine B, and after the illumination is carried out for 240min, the degradation efficiency of pollutants reaches 99.58%.
Stability evaluation of photocatalytic knitted device
After a photocatalytic experiment is carried out, the photocatalytic woven device is recycled, and after the photocatalytic woven device is soaked in pure water for a period of time, the photocatalytic degradation rhodamine B experiment is repeated for 5 times. Fig. 4 is a graph of the results of a stability experiment for a photocatalytic knitted device. As can be seen from the figure, after the composite fiber is repeatedly used for 5 times, the degradation effect of the woven device on rhodamine B is not obviously changed, and the photocatalytic stability of the polyurethane/titanium dioxide composite fiber woven device is good.
Fig. 5 is an SEM image of the polyurethane/titanium dioxide composite fiber prepared. As can be seen from the figure, the polyurethane/titanium dioxide composite fiber has a tubular structure with porous side walls, and the nano titanium dioxide is successfully loaded in the composite fiber structure. The composite fiber material has a high specific surface area, is beneficial to full contact between pollutants and a catalyst, and improves the degradation efficiency.
Example 2
The preparation method based on the polyurethane/titanium dioxide composite fiber comprises the following specific steps:
s1, placing 0.5g of sodium dodecyl sulfate in a 10.0g N N-dimethylformamide solution, and carrying out ultrasonic treatment until the sodium dodecyl sulfate is completely dissolved;
s2, adding 0.125g of nano titanium dioxide into the solution prepared in the step S1, and performing ultrasonic treatment for 50min to uniformly disperse the titanium dioxide in the solution;
s3, adding 1.0g of thermoplastic polyurethane elastomer rubber into the solution prepared in the step S2, heating in a water bath for 4 hours until the solid is dissolved, wherein the temperature of the water bath is 98 ℃, and cooling the solution to room temperature to obtain a spinning solution;
s4, preparing 65% acetone aqueous solution as spinning solidification liquid;
s5, extruding the spinning solution prepared in the step S3 into coagulating liquid from a spinning nozzle at a speed of 75mL/h to obtain the composite fiber.
By adopting the experiment of photocatalytic degradation of rhodamine B in the embodiment 1, the composite fiber woven device obtained in the embodiment 2 is placed in 5mg/L rhodamine B solution, dark reaction is firstly carried out for 30min to achieve adsorption balance, and then the photocatalytic degradation reaction is carried out by illumination. After the solution is irradiated for 240min, the degradation efficiency of the rhodamine B solution reaches 94.95 percent.
Example 3
The preparation method based on the polyurethane/titanium dioxide composite fiber comprises the following specific steps:
s1, placing 0.332g of sodium dodecyl sulfate in a 10.0g N N-dimethylformamide solution, and carrying out ultrasonic treatment until the sodium dodecyl sulfate is completely dissolved;
s2, adding 0.083g of nano titanium dioxide into the solution prepared in the step S1, and performing ultrasonic treatment for 50min to uniformly disperse the titanium dioxide in the solution;
s3, adding 1.0g of thermoplastic polyurethane elastomer rubber into the solution prepared in the step S2, heating in a water bath for 4 hours until the solid is dissolved, wherein the temperature of the water bath is 98 ℃, and cooling the solution to room temperature to obtain a spinning solution;
s4, preparing 65% acetone aqueous solution as spinning solidification liquid;
s5, extruding the spinning solution prepared in the step S3 into coagulating liquid from a spinning nozzle at a speed of 75mL/h to obtain the composite fiber.
By adopting the experiment of photocatalytic degradation of rhodamine B in the embodiment 1, the composite fiber woven device obtained in the embodiment 3 is placed in 5mg/L rhodamine B solution, dark reaction is firstly carried out for 30min to achieve adsorption balance, and then the photocatalytic degradation reaction is carried out by illumination. After the solution is irradiated for 240min, the degradation efficiency of the rhodamine B solution reaches 91.71 percent.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A preparation method of polyurethane/titanium dioxide composite fiber is characterized in that: the method comprises the following steps:
mixing sodium dodecyl sulfate and N, N-dimethylformamide to obtain a mixed solution;
adding nano titanium dioxide into the mixed solution, and uniformly dispersing the nano titanium dioxide;
adding polyurethane into the mixture, and uniformly mixing to obtain a spinning solution;
and further obtaining the polyurethane/titanium dioxide composite fiber by adopting a wet spinning method.
2. The method for producing a polyurethane/titanium dioxide composite fiber according to claim 1, characterized in that: the mass ratio of the nano titanium dioxide, the lauryl sodium sulfate, the N, N-dimethylformamide to the polyurethane is 0.05-1: 0.1-4: 10: 0.5-1.5.
3. The method for producing a polyurethane/titanium dioxide composite fiber according to claim 1, characterized in that: after addition of the polyurethane, the solid was heated in a water bath until dissolved.
4. The method for producing a polyurethane/titanium dioxide composite fiber according to claim 3, characterized in that: the temperature of the water bath heating is 95-100 ℃.
5. The method for producing a polyurethane/titanium dioxide composite fiber according to claim 1, characterized in that: the polyurethane is thermoplastic polyurethane elastomer rubber.
6. The method for producing a polyurethane/titanium dioxide composite fiber according to claim 1, characterized in that: the coagulating liquid for wet spinning is acetone water solution with mass concentration of 50-70%.
7. The method for producing a polyurethane/titanium dioxide composite fiber according to claim 1, characterized in that: the spinning speed of the wet spinning is 60-80 mL/h.
8. A polyurethane/titanium dioxide composite fiber is characterized in that: prepared by the preparation method of any one of claims 1 to 7.
9. A photocatalytic knitted device characterized by: is woven by the polyurethane/titanium dioxide composite fiber of claim 8.
10. Use of the polyurethane/titanium dioxide composite fiber of claim 8 or the photocatalytic woven device of claim 9 for photocatalytic degradation of pollutants.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110265249.5A CN113151923A (en) | 2021-03-11 | 2021-03-11 | Polyurethane/titanium dioxide composite fiber, photocatalytic woven device, preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110265249.5A CN113151923A (en) | 2021-03-11 | 2021-03-11 | Polyurethane/titanium dioxide composite fiber, photocatalytic woven device, preparation method and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113151923A true CN113151923A (en) | 2021-07-23 |
Family
ID=76886625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110265249.5A Pending CN113151923A (en) | 2021-03-11 | 2021-03-11 | Polyurethane/titanium dioxide composite fiber, photocatalytic woven device, preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113151923A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116905119A (en) * | 2023-06-29 | 2023-10-20 | 山东大学 | Preparation method of TNF/TPU composite fiber with high tensile strength |
| CN116898165A (en) * | 2023-07-12 | 2023-10-20 | 山东大学 | Self-cleaning sterilizing mask based on photocatalysis composite fiber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150306270A1 (en) * | 2013-01-28 | 2015-10-29 | Rosario Cosmetics Pvt. Ltd. | Process for producing tio2 based photocatalytic coating, the tio2 based coating obtained by the process and various articles with coating applied thereon |
| CN105195234A (en) * | 2015-10-19 | 2015-12-30 | 天津工业大学 | Preparation method of fiber photocatalyst |
| CN106012071A (en) * | 2016-06-24 | 2016-10-12 | 东华大学 | Preparation method of continuous cellulose/TiO2 aerogel fiber with photocatalytic performance |
| CN108265345A (en) * | 2016-12-30 | 2018-07-10 | 香港理工大学 | A kind of synthetic fibers with air-cleaning function and preparation method thereof |
-
2021
- 2021-03-11 CN CN202110265249.5A patent/CN113151923A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150306270A1 (en) * | 2013-01-28 | 2015-10-29 | Rosario Cosmetics Pvt. Ltd. | Process for producing tio2 based photocatalytic coating, the tio2 based coating obtained by the process and various articles with coating applied thereon |
| CN105195234A (en) * | 2015-10-19 | 2015-12-30 | 天津工业大学 | Preparation method of fiber photocatalyst |
| CN106012071A (en) * | 2016-06-24 | 2016-10-12 | 东华大学 | Preparation method of continuous cellulose/TiO2 aerogel fiber with photocatalytic performance |
| CN108265345A (en) * | 2016-12-30 | 2018-07-10 | 香港理工大学 | A kind of synthetic fibers with air-cleaning function and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116905119A (en) * | 2023-06-29 | 2023-10-20 | 山东大学 | Preparation method of TNF/TPU composite fiber with high tensile strength |
| CN116898165A (en) * | 2023-07-12 | 2023-10-20 | 山东大学 | Self-cleaning sterilizing mask based on photocatalysis composite fiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113151923A (en) | Polyurethane/titanium dioxide composite fiber, photocatalytic woven device, preparation method and application | |
| Sun et al. | Bioinspired design of underwater superoleophobic Poly (N-isopropylacrylamide)/polyacrylonitrile/TiO2 nanofibrous membranes for highly efficient oil/water separation and photocatalysis | |
| CN108855011A (en) | With absorption-visible light photocatalytic degradation synergistic effect composite material and application thereof | |
| CN107686107A (en) | The preparation method of the hydrophobic CNT graphene composite aerogel of elasticity | |
| Ding et al. | PES membrane surface modification via layer-by-layer self-assembly of GO@ TiO2 for improved photocatalytic performance | |
| CN110725024A (en) | Preparation method of fibrous photothermal conversion material | |
| CN114042387B (en) | Photocatalytic degradation dye wastewater separation multilayer composite membrane and preparation method and application thereof | |
| Jia et al. | Conversion of waste polystyrene foam into sulfonated hyper-crosslinked polymeric adsorbents for cadmium removal in a fixed-bed column | |
| CN113368838B (en) | Biomass nano-cellulose porous material with surface loaded with nano-transition metal oxide and preparation method thereof | |
| Cheng et al. | In situ prepared nanosized Pt-Ag/PDA/PVA-co-PE nanofibrous membrane for highly-efficient catalytic reduction of p-nitrophenol | |
| CN110652962A (en) | Three-dimensional porous graphene/attapulgite composite aerogel and preparation method thereof | |
| CN105776410A (en) | Flexible bismuth oxybromide-titanium oxide/carbon fiber water-purifying material with capillary water supply and photocatalytic adsorption functions and preparation method thereof | |
| CN109126743A (en) | A kind of preparation method of polyurethane foam adsorbent material | |
| Zhang et al. | Preparation of reusable UHMWPE/TiO2 photocatalytic microporous membrane reactors for efficient degradation of organic pollutants in water | |
| CN109748360B (en) | Multifunctional hybrid ultrafiltration membrane, preparation method and application | |
| Wang et al. | One-step selective separation and catalytic transformation of an organic pollutant from pollutant mixture via a thermo-responsive semi-IPN/PVDF@ Pd bilayer composite membrane | |
| Dai et al. | Preparation and characterization of reduced graphene oxide/TiO2 blended polyphenylene sulfone antifouling composite membrane with improved photocatalytic degradation performance | |
| CN109126887B (en) | Preparation method of polyurethane-based composite photocatalytic film | |
| CN109092360A (en) | A kind of preparation method of the nano hybridization gel mould for catalytic degradation organic matter | |
| CN111411412B (en) | Graphene-polyacrylonitrile-based nano composite material and preparation method and application thereof | |
| Li et al. | Visible light-responsive nanocomposite g-C3N4/CNC/PAM aerogel constructed through in-situ photoinitiation for management of wastewater containing organic/heavy metal compound contaminants | |
| CN108246328A (en) | A kind of three-dimensional carbonitride porous material of paramorph and its preparation method and application | |
| Balakrishnan et al. | Photocatalytic sponges for wastewater treatment, carbon dioxide reduction, and hydrogen production: a review | |
| Han et al. | Robust preparation of catalytic PEI@ FeOOH fiber membrane for efficient dye degradation | |
| CN103657690A (en) | Photocatalysis film preparation method |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210723 |