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Method of modifying polyelectrolyte thin film coated sericin gel with nano-silver and product and application thereof

A polyelectrolyte and nano-silver technology, applied in medical science, absorbent pads, bandages, etc., can solve the problems of easy shedding of silver ions, limited chemical groups, and difficulty in achieving high-density silver nanoparticle payloads, etc., to achieve high moisture retention Long-lasting, easy to operate, overcoming the effect of easy to breed bacteria

Active Publication Date: 2016-08-17
SOUTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter can directly generate silver nanoparticles on the surface of sericin gel, and the steps are simple, but due to the limited chemical groups available for the adsorption of silver ions on the surface of sericin gel, it is difficult to realize the effective loading of high-density silver nanoparticles, and the adsorption The silver ions are easy to fall off

Method used

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  • Method of modifying polyelectrolyte thin film coated sericin gel with nano-silver and product and application thereof
  • Method of modifying polyelectrolyte thin film coated sericin gel with nano-silver and product and application thereof
  • Method of modifying polyelectrolyte thin film coated sericin gel with nano-silver and product and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The method that nano-silver modifies polyelectrolyte film coating sericin gel, comprises the steps:

[0033] (1) Preparation of sericin powder: Take 10g of silkworm cocoons and cut them into small pieces, place them in an autoclave (120°C, 0.1Mpa) for 20min under high pressure according to the bath ratio of 1:30, wring out the silk after high pressure, and use Filter through gauze to obtain sericin solution, freeze at -80°C for 2 hours, and place in a freeze dryer for 24 hours to obtain sericin powder;

[0034] (2) Preparation of sericin porous gel: redissolve the sericin powder obtained in step (1) in hot water (80° C.) to a solution of 8% (wt), pour it into a mold, and then place it in a refrigerator at -20° C. Freeze for 2 hours, take it out and allow it to reabsorb water, put it in a -20°C refrigerator for 2 hours, and then place it in a freeze dryer for 12 hours to obtain sericin porous gel;

[0035] (3) Preparation of polyelectrolyte film-coated sericin gel: slic...

Embodiment 2

[0039] The method that nano-silver modifies polyelectrolyte film coating sericin gel, comprises the steps:

[0040] (1) Preparation of sericin powder: Take 10g of silkworm cocoons and cut them into small pieces, place them in an autoclave (120°C, 0.1Mpa) for 20min under high pressure according to the bath ratio of 1:30, wring out the high-pressure silk, and dry them with gauze. Filtrate to obtain sericin solution; freeze at -80°C for 2 hours, and place in a freeze dryer for 24 hours to obtain sericin powder;

[0041] (2) Preparation of sericin porous gel: redissolve the sericin powder obtained in step (1) in hot water (80° C.) to a solution of 8% (wt), pour it into a mold, and then place it in a refrigerator at -20° C. Freeze for 2 hours, take it out and allow it to reabsorb water, put it in a -20°C refrigerator for 2 hours, and then place it in a freeze dryer for 12 hours to obtain sericin porous gel;

[0042] (3) Preparation of polyelectrolyte film-coated sericin gel: slice...

Embodiment 3

[0046] The method that nano-silver modifies polyelectrolyte film coating sericin gel, comprises the steps:

[0047] (1) Preparation of sericin powder: Take 10g of silkworm cocoons and cut them into small pieces, place them in an autoclave (120°C, 0.1Mpa) for 20 minutes under high pressure according to the bath ratio of 1:30, wring out the silk after high pressure, and filter it with gauze The obtained sericin solution was frozen at -80°C for 2 hours, and placed in a freeze dryer for 24 hours to obtain sericin powder;

[0048] (2) Preparation of sericin porous gel: redissolve the sericin powder obtained in step (1) in hot water (80° C.) to a solution of 8% (wt), pour it into a mold, and then place it in a refrigerator at -20° C. Freeze for 2 hours, take it out and allow it to reabsorb water, put it in a -20°C refrigerator for 2 hours, and then place it in a freeze dryer for 12 hours to obtain sericin porous gel;

[0049] (3) Preparation of polyelectrolyte film-coated sericin g...

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Abstract

The invention discloses a method of modifying polyelectrolyte thin film coated sericin gel with nano-silver and a product and application thereof. The method of modifying polyelectrolyte thin film coated sericin gel with nano-silver includes the steps that sericin powder is prepared, sericin porous gel is prepared, then the surface of the sericin porous gel is coated with a polyelectrolyte thin film, and then the surface of the polyelectrolyte thin film-coated sericin gel is modified with nano-silver. The prepared polyelectrolyte thin film coated sericin gel modified with nano-silver is high in biocompatibility, hygroscopicity, moisture retentivity and efficient and durable in antifungal property, can be used for preparing an antifungal material and has excellent application prospects.

Description

technical field [0001] The invention belongs to the field of biological materials, and in particular relates to a method for coating sericin gel with a nano-silver modified polyelectrolyte film, and also relates to a nano-silver modified polyelectrolyte film coated with sericin gel and a nano-silver modified polyelectrolyte prepared by the method Application of film-coated sericin gel. Background technique [0002] Silk protein is mainly composed of fibroin and sericin wrapped in its outer layer. Silk fibroin is the main body of silk, accounting for about 75%; the rest is sericin, accounting for about 25%. Sericin is a natural macromolecular viscous protein wrapped on the surface of silk fiber, which plays a role of protection and adhesion to silk fibroin. Sericin is composed of 18 kinds of amino acids, of which amino acids with strong polar side groups such as hydroxyl, carboxyl, and amino groups account for about 70% of the total. These amino acids endow sericin with goo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L15/32A61L15/26A61L15/24A61L15/42A61L15/44
CPCA61L15/24A61L15/26A61L15/32A61L15/42A61L15/44A61L2300/104A61L2300/404C08L89/00C08L33/02C08L79/02C08L39/00
Inventor 何华伟陶刚王叶菁赵萍夏庆友
Owner SOUTHWEST UNIV
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