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A method for preparing nanocomposite fibers by coagulation of grooved hydrogel

A nanofiber and hydrogel technology, applied in the fields of fiber chemical characteristics, wet spinning, rayon manufacturing, etc., can solve the problems of complex device and low fiber preparation efficiency, saving molding time, simple and fast molding process, The effect of increasing tensile strength

Active Publication Date: 2021-07-20
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for preparing nanocomposite fibers using grooved hydrogel coagulation, which overcomes the defects of existing microfluidic spinning technology, complex devices, and low fiber preparation efficiency

Method used

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  • A method for preparing nanocomposite fibers by coagulation of grooved hydrogel
  • A method for preparing nanocomposite fibers by coagulation of grooved hydrogel
  • A method for preparing nanocomposite fibers by coagulation of grooved hydrogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] (1) At room temperature, mix 15g of acrylamide, 0.3g of ammonium persulfate, 0.3g of N,N-methylenebisacrylamide, and 0.1g of carboxylated methylcellulose in 100mL of deionized water at 250r min -1 Magnetic stirring at a rotating speed of 100°C, and after mixing evenly, 0.3 g of tetramethylethylenediamine was added. Pour the above mixed solution into the polylactic acid mold prepared by 3D printing method (plug-in type 5×5×5cm 3 ) in cross-linking curing (such as figure 1 shown). After waiting for 5 minutes, the mold was released, and the obtained flume-shaped hydrogel was rinsed with excess water to remove unreacted components to ensure that the flume-shaped hydrogel was fully expanded. Put the prepared fully expanded grooved hydrogel into deionized water of equal mass, then add 0.5g of calcium chloride, and soak for 5 hours at 20°C to obtain a hydrogel containing calcium chloride .

[0061] (2) Mix 0.5g SWCNTs and 10mL concentrated HNO 3 and 5mL of concentrated H...

Embodiment 2

[0069](1) At room temperature, put 17g of acrylamide, 0.4g of ammonium persulfate, 0.4g of N,N-methylenebisacrylamide, and 0.2g of carboxylated methyl cellulose in 100mL of deionized water at a speed of 300r / min. Stir, and add 0.4 g of tetramethylethylenediamine after mixing evenly. Pour the above mixed solution into the polylactic acid mold (box type 10×10×10cm) prepared by 3D printing method 3 ) in cross-linking curing (such as figure 1 shown). After waiting for 10 minutes, the mold was demoulded, and the obtained groove-shaped hydrogel was rinsed with excess water to remove unreacted components to ensure that the groove hydrogel was fully expanded. Put the prepared fully expanded grooved hydrogel into deionized water of equal mass, then add 0.75g of calcium chloride, and soak for 6 hours at 25°C to obtain a hydrogel containing calcium chloride .

[0070] (2) Mix 0.6g SWCNTs and 20mL concentrated HNO 3 , 10mL of concentrated HCl into a three-necked flask and heated at ...

Embodiment 3

[0073] (1) At room temperature, mix 19g of acrylamide, 0.5g of ammonium persulfate, 0.5g of N,N-methylenebisacrylamide, and 0.3g of carboxylated methylcellulose in 100mL of deionized water at 350r min -1 Magnetic stirring at a rotating speed of 100°C, and after mixing evenly, 0.5 g of tetramethylethylenediamine was added. Pour the above mixed solution into the polylactic acid mold prepared by 3D printing method (bottom tank type 15×15×15cm 3 ) in cross-linking curing (such as figure 1 shown). After waiting for 15 minutes, the mold was released, and the obtained groove-shaped hydrogel was rinsed with excess water to remove unreacted components to ensure that the groove hydrogel fully expanded. Put the prepared fully expanded groove hydrogel into deionized water of equal mass, then add 1g of calcium chloride, and stand and soak for 7 hours at 30°C to obtain a hydrogel containing calcium chloride.

[0074] (2) Mix 0.7g SWCNTs and 30mL concentrated HNO 3 , 15mL concentrated H...

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Abstract

The invention relates to a method for preparing nanocomposite fibers by coagulation of groove-shaped hydrogels. The composite fibers are as follows: the groove-shaped hydrogels prepared by 3D printing methods are used as coagulation baths, combined with the microstructures in wet spinning Obtained by flow control method. The method for preparing nanocomposite fibers in the present invention is novel and convenient, and can prepare various nanocomposite fibers with high strength and good weaving performance using sodium alginate (SA) as a matrix, and can be used in the smart clothing industry and the like. Using hydrogel as a coagulation bath not only improves the efficiency of traditional wet spinning to prepare fibers, but also prolongs the service life of the coagulation bath.

Description

technical field [0001] The invention belongs to the field of nanocomposite fiber and its preparation, and in particular relates to a method for preparing nanocomposite fiber by coagulation of groove type hydrogel. Background technique [0002] With the development of social economy, researchers have invested a lot of energy to develop biocomposites with high strength and toughness. Adding low-dimensional nanomaterials to the matrix of traditional fiber materials will enhance the strength and toughness of fibers. However, under mild conditions Preparation of nanocomposite fibers with high strength and toughness remains a great challenge. Carbon nanotubes, graphene oxide, and graphene have excellent mechanical properties and are widely used in nanocomposites. So far, several strategies including wet and dry spinning methods, microfluidics, and confined space assisted assembly have been developed to achieve good tensile strength or toughness for multifunctional nanocomposite f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/04D01F1/10C08F251/02C08F220/56C08F222/38C08J3/075B33Y70/10B33Y80/00D01D5/06
CPCB33Y70/00B33Y80/00C08F251/02C08J3/075D01D5/06D01F1/10D01F9/04C08F220/56C08F222/385
Inventor 侯成义刘芮李建民李耀刚王宏志张青红
Owner DONGHUA UNIV
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