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Preparation method of polyacrylic acid/cellulose hydrogel fibers, prepared hydrogel fiber and application thereof

A hydrogel fiber, polyacrylic acid technology, applied in the direction of cellulose/protein conjugated rayon, fiber type, fiber processing, etc., can solve the problems of low mechanical strength, poor electrical conductivity, complex synthesis process, etc., and achieve the synthesis process. Simple and harmless, good adsorption effect, good adsorption effect

Pending Publication Date: 2021-07-09
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the technical problems to be solved by the present invention is to provide a preparation method of polyacrylic acid / cellulose hydrogel fiber, the prepared hydrogel fiber and its application, so as to improve the hydrogel synthesis in the prior art. Other polymers or toxic crosslinking agents, complex synthesis process, poor toughness, poor electrical conductivity, low mechanical strength, and poor thermal stability of hydrogel fibers, provide a preparation method and preparation method of polyacrylic acid / cellulose hydrogel fibers polyacrylic acid / cellulose hydrogel fiber

Method used

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  • Preparation method of polyacrylic acid/cellulose hydrogel fibers, prepared hydrogel fiber and application thereof
  • Preparation method of polyacrylic acid/cellulose hydrogel fibers, prepared hydrogel fiber and application thereof
  • Preparation method of polyacrylic acid/cellulose hydrogel fibers, prepared hydrogel fiber and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] The preparation method of PAAS / CMC composite hydrogel fiber specifically comprises the following steps:

[0093] (1) Take 0.03 g of sodium carboxymethyl cellulose (CMC) solid powder and dissolve it in a mixed solvent of 4 mL of deionized water and 1 mL of dimethyl sulfoxide solution to obtain a gel.

[0094] (2) Add 0.2 g of sodium polyacrylate (PAAS) and pour it into the jelly, stir until it is completely dissolved, and obtain a uniform translucent jelly.

[0095] (3) The mixture was heated in a water bath at 60° C. and magnetic stirring at 200 rpm for 15 min, and cross-linked to obtain a PAAS / CMC composite hydrogel.

[0096] (4) If there are still large agglomerates after heating in the water bath, slow heating at 70°C for 25min.

[0097] (5) The PAAS / CMC composite hydrogel was drawn into filamentous fibers by a spinning device. Wherein, in this reaction system, the mass concentration of sodium carboxymethyl cellulose solid powder feeding is 0.6%. The calculation m...

Embodiment 2

[0099] The preparation method of PAAS / CMC composite hydrogel fiber specifically comprises the following steps:

[0100] (1) Take 0.045 g of sodium carboxymethyl cellulose solid powder and dissolve it in a mixed solvent of 4 mL of deionized water and 1 mL of dimethyl sulfoxide solution to obtain a gel.

[0101] (2) Add 0.2 g of sodium polyacrylate and pour it into the jelly, stir until it is completely dissolved, and obtain a uniform translucent jelly.

[0102] (3) The mixture was heated in a water bath at 60° C. and magnetic stirring at 200 rpm for 20 min, and the PAAS / CMC composite hydrogel was obtained by cross-linking.

[0103] (4) If there are still large agglomerates after heating in the water bath, it can be heated at a slow speed of 20min at 80°C.

[0104] (5) The PAAS / CMC composite hydrogel was drawn into filamentous fibers by a spinning device. Wherein, in this reaction system, the mass concentration of sodium carboxymethyl cellulose solid powder feeding is 0.85%. ...

Embodiment 3

[0106] The preparation method of PAAS / CMC composite hydrogel fiber specifically comprises the following steps:

[0107] (1) Take 0.06 g of sodium carboxymethyl cellulose solid powder and dissolve it in a mixed solvent of 4 mL of deionized water and 1 mL of dimethyl sulfoxide solution to obtain a gel.

[0108] (2) Add 0.2 g of sodium polyacrylate and pour it into the jelly, stir until it is completely dissolved, and obtain a uniform translucent jelly.

[0109] (3) The mixture was heated in a water bath at 60° C. and magnetic stirring at 200 rpm for 15 min, and cross-linked to obtain a PAAS / CMC composite hydrogel.

[0110] (4) If there are still large agglomerates after heating in the water bath, it can be heated at a slow speed of 70-80°C for 20min.

[0111] (5) The PAAS / CMC composite hydrogel was drawn into filamentous fibers by a spinning device. Wherein, in this reaction system, the mass concentration of sodium carboxymethyl cellulose solid powder feeding is 1%. The calcu...

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Abstract

The invention discloses a preparation method of polyacrylic acid / cellulose hydrogel fibers, and relates to the technical field of hydrogel fibers. The preparation method comprises the following steps that (1), sodium carboxymethyl cellulose is dissolved in a mixed solvent of water and dimethyl sulfoxide, then sodium polyacrylate is added and stirred till the sodium carboxymethyl cellulose is dissolved, then heating is carried out for 15-20 minutes in a water bath at the temperature of 60 DEG C and the speed of 200 rpm, and cross-linking is carried out to obtain polyacrylic acid / cellulose hydrogel; and (2), the prepared hydrogel is drawn into filamentous fibers by using a spinning device, and the polyacrylic acid / cellulose hydrogel fibers are obtained. The invention further provides the hydrogel fiber prepared by the method and application thereof. The preparation method of the polyacrylic acid / cellulose hydrogel fibers has the beneficial effects that introduction of other macromolecules or toxic cross-linking agents during synthesis of hydrogel is avoided, the synthesis process is simple and harmless, and the problems of low toughness, poor thermal stability, low conductivity, low mechanical strength and the like of hydrogel fibers are solved.

Description

technical field [0001] The invention relates to the technical field of hydrogel fibers, in particular to a preparation method of polyacrylic acid / cellulose hydrogel fibers, the prepared hydrogel fibers and applications thereof. Background technique [0002] With the continuous improvement of scientific research level, the preparation technology of various hydrogels has become more and more mature, and there are many kinds of methods. At this stage, more and more researches have been conducted on the preparation and application of polyacrylic acid hydrogels and carboxymethyl cellulose hydrogels, while PAAS and CMC are widely used in various industries due to their special structures and excellent properties. field. [0003] Zheng Chunxiao's research group [Zheng Chunxiao, Zhu Sailing, Lu Ya, et al. Synthesis and characterization of nanocellulose / polyacrylic acid-polyacrylamide double network conductive hydrogel[J]. Chinese Journal of Forestry Engineering, 2020, 5(4): 93-100...

Claims

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Application Information

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IPC IPC(8): D01F8/10D01F8/02C08J3/24C08J3/075C08L33/02C08L1/28D06M15/263B01J20/28B01J20/26B01J20/24C02F1/28C02F101/20D06M101/26D06M101/08
CPCD01F8/10D01F8/02C08J3/246C08J3/075D06M15/263B01J20/28047B01J20/24B01J20/267C02F1/285C02F1/286C08J2333/02C08J2401/28C02F2101/20D06M2101/26D06M2101/08Y02P10/20
Inventor 张凝王媚蒋玮郑雪松
Owner HEFEI UNIV
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