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Polymeric hydrogel grafted on fibers by calcium ion crosslinking and preparation method thereof

A calcium ion cross-linking, hydrogel technology, applied in the direction of fiber type, fiber processing, textile and paper making, etc., can solve the problems of limited fiber, difficult grafting rate, complex fiber grafting gel process, etc. Compatible, easy-to-use effects

Inactive Publication Date: 2011-06-08
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies of the prior art, the technical problems to be solved by the present invention are complex fiber grafting gel process, difficult control of grafting rate, limited choice of fibers, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1. A calcium ion cross-linked hydroxyethyl cellulose / calcium alginate hydrogel grafted on polypropylene fiber non-woven fabric

[0025] Reference patent 200910228776.8 prepares polypropylene fiber non-woven fabric grafted with polyacrylic acid, and after neutralization treatment with sodium hydroxide, obtains polypropylene fiber non-woven fabric grafted with sodium polyacrylate;

[0026] Prepare a mixed aqueous solution of 1% sodium alginate by mass percentage and 0.5% hydroxyethyl cellulose by mass percentage, and stand for defoaming before use; at the same time, prepare a calcium chloride aqueous solution with a mass percentage concentration of 2%;

[0027] Soak the above-mentioned polypropylene fiber non-woven fabric grafted with sodium polyacrylate into the mixed aqueous solution of hydroxyethyl cellulose and sodium alginate for 0.5 hours, take it out and drip it for 2 minutes, and scrape off the excessive viscous adhesion with a scraper. Solution, make the ...

Embodiment 2

[0028] Example 2. A calcium ion cross-linked hydroxypropyl methylcellulose / calcium alginate hydrogel grafted on polytetrafluoroethylene fiber non-woven fabric

[0029] Reference patent 200910228776.8 prepares polytetrafluoroethylene fiber non-woven fabric grafted with polyacrylic acid, and after neutralization treatment with sodium hydroxide, obtains polytetrafluoroethylene fiber non-woven fabric grafted with sodium polyacrylate;

[0030] Prepare a mixed aqueous solution of 3% sodium alginate by mass percent and 0.5% hydroxypropyl methylcellulose by mass percent, and stand for defoaming before use; at the same time, prepare an aqueous calcium chloride solution with a concentration of 8% by mass percent; Soak the above polytetrafluoroethylene fiber non-woven fabric grafted with sodium polyacrylate into the mixed aqueous solution of hydroxypropyl methylcellulose and sodium alginate for 0.5 hours, take it out and drip for 2 minutes, scrape off the adhered Too much viscous solutio...

Embodiment 3

[0030] Prepare a mixed aqueous solution of 3% sodium alginate by mass percent and 0.5% hydroxypropyl methylcellulose by mass percent, and stand for defoaming before use; at the same time, prepare an aqueous calcium chloride solution with a concentration of 8% by mass percent; Soak the above polytetrafluoroethylene fiber non-woven fabric grafted with sodium polyacrylate into the mixed aqueous solution of hydroxypropyl methylcellulose and sodium alginate for 0.5 hours, take it out and drip for 2 minutes, scrape off the adhered Too much viscous solution, so that the attachment liquid on the fiber surface is as uniform as possible, immediately put it into the above calcium chloride aqueous solution, crosslink for 0.5 hours, rinse 3 times with deionized water, and obtain calcium ion crosslinked polytetrafluoroethylene fiber Hydroxypropylmethylcellulose / calcium alginate hydrogels grafted on nonwoven fabrics. Embodiment 3. A kind of calcium ion cross-linked carboxymethyl chitosan / cal...

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PUM

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Abstract

The invention provides a polymeric hydrogel grafted on fibers by calcium ion crosslinking and a preparation method thereof. The polymeric hydrogel comprises the following components in percentage by mass: 3-8% of sodium polyacrylate grafted fiber, 0.96-4% of sodium alginate, 0-2% of water-solubility polymeric additive, 0.96-8% of calcium chloride and 75-95% of deionized water. The preparation method comprises the following steps: grafting polyacrylic acid on fibers by ultraviolet radiation; neutralizing with sodium hydroxide to obtain sodium polyacrylate-grafted fibers; soaking sodium polyacrylate-grafted fibers in an aqueous sodium alginate solution; taking out and scraping off the superabundant adherent viscous solution; and crosslinking in an aqueous calcium chloride solution to obtain the calcium alginate hydrogel grafted on the fibers. The preparation method is simple to operate, and the prepared polymeric hydrogel grafted on fibers has application prospects in the fields of adsorption separation, drug control and release, immobilized enzyme, tissue engineering and the like.

Description

technical field [0001] The invention relates to a method for manufacturing a polymer hydrogel grafted on fibers by calcium ion crosslinking, and belongs to the field of functional polymer materials. Background technique [0002] Fiber material has good flexibility and mechanical strength, large specific surface area, can be prepared into various shapes, and is easy to use. But the materials that can be spun into fibers are very limited, and the formed fibers often lack various functionalities. [0003] Hydrogel is a water-soluble cross-linked polymer, which can absorb a large amount of water without dissolving in water, and has good softness, elasticity, water storage capacity and biocompatibility. Hydrogels contain stimuli-responsive and reversible swelling behaviors, and can exhibit adjustable smart swelling behaviors in response to external stimuli such as pH, temperature, ionic strength, and electric field. Therefore, research on hydrogels is called a research hotspot ...

Claims

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Application Information

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IPC IPC(8): D06M14/28D06M14/30D06M15/13D06M11/155D06M101/20D06M101/22D06M101/30
Inventor 赵孔银魏俊富阚伯红成学涛
Owner TIANJIN POLYTECHNIC UNIV
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