Preparation method of sericin-polyvinyl alcohol blended antibacterial film loaded with nano-silver, and product and application of antibacterial film

A technology of polyvinyl alcohol and polyvinyl alcohol solution, which is applied in the field of biomedical composite antibacterial materials, can solve the problems of poor film mechanical properties and difficulty in meeting the requirements of biological materials, and achieve the effects of overcoming brittleness, good water absorption, and good moisture retention

Inactive Publication Date: 2017-05-10
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the films prepared from pure sericin have poor mechanical properties and are difficult to meet the requirements of biological materials.

Method used

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  • Preparation method of sericin-polyvinyl alcohol blended antibacterial film loaded with nano-silver, and product and application of antibacterial film
  • Preparation method of sericin-polyvinyl alcohol blended antibacterial film loaded with nano-silver, and product and application of antibacterial film
  • Preparation method of sericin-polyvinyl alcohol blended antibacterial film loaded with nano-silver, and product and application of antibacterial film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of the sericin-polyvinyl alcohol blended antibacterial film loaded with nano silver comprises the steps:

[0032] (1) Preparation of sericin solution: Cut silkworm cocoons into pieces and place them in deionized water under high temperature and pressure (120°C, 0.1Mpa) for 30 minutes at a bath ratio of 1:30, collect the sericin solution, filter it with gauze, and filter the filtered Sericin solution is frozen in-80 ℃ refrigerator, utilizes freeze drier then to make sericin powder from the frozen sericin, then the prepared sericin powder is added into deionized water and is mixed with a concentration of 4% (w / t, g / ml), heating (80 ℃) dissolves, and obtains sericin solution;

[0033] (2) Preparation of sericin-polyvinyl alcohol blended film: Weigh polyvinyl alcohol solid powder at a concentration of 5% (w / t, g / ml), add deionized water, swell for 30min, and then place the polyvinyl alcohol at 90°C Heating in a water bath, continuously stirring and ...

Embodiment 2

[0036] The preparation method of the sericin-polyvinyl alcohol blended antibacterial film loaded with nano silver comprises the steps:

[0037] (1) Preparation of sericin solution: Cut silkworm cocoons into pieces and place them in deionized water under high temperature and pressure (120°C, 0.1Mpa) for 30 minutes at a bath ratio of 1:30, collect the sericin solution, filter it with gauze, and filter the filtered Sericin solution is frozen in-80 ℃ refrigerator, then utilizes freeze drier to make sericin powder from the frozen sericin, then the prepared sericin powder is added into deionized water to be mixed with a concentration of 4% (w / t, g / ml), heating (80 ℃) dissolves, and obtains sericin solution;

[0038] (2) Preparation of sericin-polyvinyl alcohol blended film: Weigh polyvinyl alcohol solid powder at a concentration of 5% (w / t, g / ml), add deionized water, swell for 30min, and then place the polyvinyl alcohol at 90°C Heating in a water bath, continuously stirring and d...

Embodiment 3

[0041] The preparation method of the sericin-polyvinyl alcohol blended antibacterial film loaded with nano silver comprises the steps:

[0042] (1) Preparation of sericin solution: Cut silkworm cocoons into pieces and place them in deionized water under high temperature and pressure (120°C, 0.1Mpa) for 20 minutes at a bath ratio of 1:30, collect the sericin solution, filter it with gauze, and filter the filtered Sericin solution is frozen in-80 ℃ refrigerator, then utilizes freeze drier to make sericin powder from the frozen sericin, then the prepared sericin powder is added into deionized water to be mixed with a concentration of 4% (w / t, g / ml), heating (80 ℃) dissolves, and obtains sericin solution;

[0043] (2) Preparation of sericin-polyvinyl alcohol blended film: Weigh polyvinyl alcohol solid powder at a concentration of 5% (w / t, g / ml), add deionized water, swell for 30min, and then place the polyvinyl alcohol at 90°C Heating in a water bath, continuously stirring and d...

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Abstract

The invention relates to a preparation method of a sericin-polyvinyl alcohol blended antibacterial film loaded with nano-silver, and a product and application of the antibacterial film. The preparation method is characterized in that silkworm cocoons are treated at high temperature and high pressure to obtain a sericin solution; then, the sericin solution and a prepared polyvinyl alcohol solution are blended, and are poured into a container; through freezing-unfreezing circulation, sericin-polyvinyl alcohol blended gel is obtained; drying is performed; a sericin-polyvinyl alcohol blended film is obtained; finally, the prepared film is added into an AgNO3 solution; the sericin-polyvinyl alcohol blended antibacterial film loaded with the nano-silver is obtained by an ultraviolet radiation reduction method. The prepared sericin-polyvinyl alcohol blended antibacterial film loaded with the nano-silver has good mechanical performance, water absorption performance and antibacterial performance, and is hopeful to be applied to the field of biomedical materials.

Description

technical field [0001] The invention belongs to the field of biomedical composite antibacterial materials, and relates to a preparation method of sericin-polyvinyl alcohol blended antibacterial film loaded with nano-silver and its product and application. Background technique [0002] Sericin is a kind of globular protein, which is irregularly attached to the periphery of silk fibroin in the form of scales, accounting for about 25% of the mass of the cocoon layer. The sericin molecule is composed of 18 kinds of amino acids such as serine (33.43%), aspartic acid (16.71%), glycine (13.49%), among which the polar side chain amino acids account for 74.32%, and the non-polar side chain amino acids account for 25.68% . Sericin has good biological reactivity, moisture retention, hydrophilicity, cell adhesion, biocompatibility, biodegradability and promotion of cell proliferation, and is an ideal biomedical material. In the silk reeling industry, sericin is often regarded as waste...

Claims

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Application Information

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IPC IPC(8): C08J7/12C08L89/00C08L29/04A61L15/32A61L15/24A61L15/46
CPCC08J7/123A61L15/24A61L15/32A61L15/46A61L2300/104A61L2300/404C08J2329/04C08J2389/00C08J2429/04C08J2489/00C08L29/04
Inventor 王叶菁蔡蕊陶刚赵萍夏庆友何华伟
Owner SOUTHWEST UNIVERSITY
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