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Polyelectrolyte compound hydrogel fiber and preparation method thereof

A hydrogel fiber, polyelectrolyte technology, applied in the direction of animal fibers, synthetic fibers, conjugated synthetic polymer rayon, etc., can solve problems such as poor mechanical properties, and achieve good mechanical strength and excellent mechanical properties.

Active Publication Date: 2021-11-12
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This characteristic makes polyelectrolyte complexes often have poor mechanical properties when used as hydrogels

Method used

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  • Polyelectrolyte compound hydrogel fiber and preparation method thereof
  • Polyelectrolyte compound hydrogel fiber and preparation method thereof
  • Polyelectrolyte compound hydrogel fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A1

[0041] A preparation method of a polyelectrolyte composite hydrogel fiber, the specific steps are as follows:

[0042] (1) Preparation of raw materials:

[0043] Polyelectrolyte solution X: dissolving chitosan in acetic acid solution, adjusting its pH value to 3.5, and centrifuging and defoaming to obtain polyelectrolyte solution X with a mass fraction of polyelectrolyte of 1.5wt.%.

[0044] Polyelectrolyte solution Y: Sodium alginate was dissolved in deionized water, and then centrifuged and defoamed to obtain polyelectrolyte solution Y with a mass fraction of polyelectrolyte of 1.5wt.%.

[0045] Solution containing metal ion C: CaCl 2 Dissolve in deionized water to obtain a solution containing metal ion C with a concentration of 1 mg / mL;

[0046] (2) First use polyelectrolyte solution X as the spinning solution to carry out wet spinning, after compounding with polyelectrolyte solution Y for 24 hours in the coagulation bath, and then washing for 20 seconds, polyelectrolyte ...

Embodiment A2

[0054] A preparation method of a polyelectrolyte composite hydrogel fiber, the specific steps are as follows:

[0055] (1) Preparation of raw materials:

[0056] Polyelectrolyte solution X: polyallylamine was dissolved in deionized water, and its pH value was adjusted to 3.5, and then centrifuged and defoamed to obtain a polyelectrolyte solution X with a mass fraction of polyelectrolyte of 0.8wt.%.

[0057] Polyelectrolyte solution Y: Dissolve N,N-dicarboxymethylpolyallylamine in deionized water, adjust its pH value to 3.5, and then centrifuge and defoam to obtain a polyelectrolyte with a mass fraction of polyelectrolyte of 1wt.%. Solution Y;

[0058] A solution containing metal ions C: FeCl 3 Dissolve in deionized water to obtain a solution containing metal ion C with a concentration of 1.5 mg / mL;

[0059] (2) First use polyelectrolyte solution X as the spinning solution to carry out wet spinning, and after compounding with polyelectrolyte solution Y for 18 hours in the co...

Embodiment A3

[0064] A preparation method of a polyelectrolyte composite hydrogel fiber, the specific steps are as follows:

[0065] (1) Preparation of raw materials:

[0066] Polyelectrolyte solution X: Dissolve polydiallyldimethylammonium chloride in deionized water, adjust its pH value to 3, and then centrifuge and defoam to obtain a polyelectrolyte solution with a mass fraction of polyelectrolyte of 1.2wt.%. X;

[0067] Polyelectrolyte solution Y: Dissolve N,N-dicarboxymethyl branched polyethyleneimine in deionized water, adjust its pH value to 3, and then centrifuge and defoam to obtain polyelectrolyte with a mass fraction of 1.5wt.%. Polyelectrolyte solution Y;

[0068] Solution containing metal ion C: EuCl 3 Dissolve in deionized water to obtain a solution containing metal ion C with a concentration of 1 mg / mL;

[0069] (2) First use polyelectrolyte solution X as the spinning solution to carry out wet spinning, after compounding with polyelectrolyte solution Y for 12 hours in the...

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Abstract

The invention relates to polyelectrolyte compound hydrogel fiber and a preparation method thereof. The method comprises the following steps of carrying out wet spinning by taking a solution X as a spinning solution, compounding in a coagulating bath, completely immersing in a solution containing polyvalent metal ions C for treatment, and finally carrying out water absorption treatment to obtain the fiber. When the solution X takes polycation electrolyte A as the solute, the solute of a solution Y serving as the coagulating bath is polyanion electrolyte B; when the solution X takes the polyanion electrolyte B as the solute, the solute of the solution Y serving as the coagulating bath is the polycation electrolyte A; the prepared fiber has a skin-core structure, electrostatic force is formed between a skin layer and a core layer, and carboxylate radicals in the polyanion electrolyte B and the polyvalent metal ions C form a coordination cross-linked structure; and the hydrogel fiber is completely immersed in deionized water and is tested after being immersed for 2 days, wherein the elongation at break is 80-160%, the monofilament strength is 10-45 MPa, the initial modulus is 12-180 MPa, and heavy objects with the weight being 2000-10000 times that of the fiber can be lifted.

Description

technical field [0001] The invention belongs to the technical field of hydrogel fibers, and relates to a polyelectrolyte composite hydrogel fiber and a preparation method thereof, in particular to a polyelectrolyte composite hydrogel fiber which can be used for artificial tendon tissue and a preparation method thereof. Background technique [0002] Hydrogel is a kind of material with good biocompatibility and softness. It has a three-dimensional network structure with strong hydrophilic ability. It can swell rapidly in water and can maintain a large volume of water without dissolving in this swollen state. . The material has high water content, good biocompatibility, is easy to modify, and can achieve reversible expansion and contraction under the stimulation of some factors (such as pH and temperature). People usually use hydrogels as adsorbents, drug carriers, etc., which have important applications in drug therapy, biological detection and other fields. However, the mec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/00D01F8/18D01F8/10D01F6/26D01F11/00D01F11/06D06M15/13D06M15/356D06M15/61D01D5/06D06M101/10D06M101/18
CPCD01F9/00D01F8/18D01F8/10D01F6/26D01F11/00D01F11/06D06M15/13D06M15/3562D06M15/61D01D5/06D06M2101/10D06M2101/18
Inventor 杨曙光黄浩徐弦王伟杰刘泽新
Owner DONGHUA UNIV
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