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Preparation and application methods of flexible composite film with sterilization function

A composite film and flexible technology, applied in the field of functional polymer film materials, can solve the problems of inconvenient recycling and low sterilization efficiency, and achieve the effects of low cost, high-efficiency sterilization performance, and simple operation

Active Publication Date: 2017-05-10
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing fluorescent conjugated polyelectrolyte, such as low sterilization efficiency, inconvenient recycling, and can only be applied to solution system sterilization, to provide a flexible composite film that is simple to prepare, low in cost, and beneficial to recycling and reuse. Preparation and application method, the film has high-efficiency bactericidal performance

Method used

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  • Preparation and application methods of flexible composite film with sterilization function
  • Preparation and application methods of flexible composite film with sterilization function
  • Preparation and application methods of flexible composite film with sterilization function

Examples

Experimental program
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Effect test

Embodiment 1

[0052] A method for preparing and applying a flexible composite film with a bactericidal function, comprising the following steps:

[0053] Step 1. Mix polydimethylsiloxane stock solution and curing agent according to the volume ratio of 8:1, stir evenly and pour it on the quartz plate; then put it in a vacuum drying oven and let it stand for 0.5 hours; then heat up to In the temperature range of 50°C, keep warm for 0.5 hours to prepare a flexible polydimethylsiloxane film;

[0054] Step 2. Put the prepared polydimethylsiloxane film into a UV ozone light cleaner for 15 minutes; then quickly immerse it in a silver ammonia solution with a concentration of 0.05M and stir for 30 minutes; then immerse it in a silver ammonia solution with a concentration of 0.05M In the glucose solution, heat up to a temperature range of 30°C, keep warm and stir for 60 minutes; rinse and dry to obtain a flexible silver nano film;

[0055]Step 3, immerse the prepared silver nanofilm in a 0.5 mg / mL p...

Embodiment 2

[0059] A method for preparing and applying a flexible composite film with a bactericidal function, comprising the following steps:

[0060] Step 1. Mix polydimethylsiloxane stock solution and curing agent according to the ratio of 10:1 by volume, stir evenly and pour it onto a polystyrene petri dish; then put it in a vacuum drying oven and let it stand for 0.5 hours ; and then heated to a temperature range of 50° C., and kept warm for 0.5 hours to prepare a flexible polydimethylsiloxane film;

[0061] Step 2. Put the prepared polydimethylsiloxane film into an ultraviolet ozone light cleaner for 15 minutes; then quickly immerse it in a silver ammonia solution with a concentration of 0.05M and stir for 30 minutes; then immerse it in a silver ammonia solution with a concentration of 0.05M In the glucose solution, the temperature was raised to within the temperature range of 50°C, kept warm and stirred for 60 minutes; rinsed and dried to obtain a flexible silver nano film;

[006...

Embodiment 3

[0066] A method for preparing and applying a flexible composite film with a bactericidal function, comprising the following steps:

[0067] Step 1. Mix polydimethylsiloxane stock solution and curing agent according to the ratio of 10:1 by volume, stir evenly and pour it onto a polystyrene petri dish; then put it in a vacuum drying oven and let it stand for 0.5 hours ; and then heated to a temperature range of 60° C., and kept warm for 2 hours to prepare a flexible polydimethylsiloxane film;

[0068] Step 2. Put the prepared polydimethylsiloxane film into an ultraviolet ozone light cleaner for 15 minutes; then quickly immerse it in a silver ammonia solution with a concentration of 0.1M and stir for 30 minutes; then immerse it in a silver ammonia solution with a concentration of 0.1M In the glucose solution, the temperature was raised to within the temperature range of 50°C, kept warm and stirred for 60 minutes; rinsed and dried to obtain a flexible silver nano film;

[0069] S...

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Abstract

The invention belongs to the technical field of functional polymer film materials, and relates to preparation and application methods of a flexible composite film with a sterilization function. The flexible composite film is prepared by adopting an electrostatic self-assembly technology. The method comprises the steps of firstly preparing a flexible polydimethylsiloxane film; preparing silver nanoparticles by using silver mirror reaction in the flexible film; and adsorbing a polyelectrolyte layer and a fluorescent conjugated polyelectrolyte for sterilization. The flexible composite film has the beneficial effects that the preparation process is simple and convenient, no complicated equipment is needed, the ability of the fluorescent conjugated polyelectrolyte for generating reactive oxygen species is strengthened by the surface plasma effect of the silver nanoparticles in the film; and the film has very good sterilization ability and has good flexibility, and has a good application prospect in the field of food safety and medical hygiene, etc.

Description

technical field [0001] The invention relates to the field of functional polymer film materials, in particular to a preparation and application method of a flexible composite film with excellent bactericidal function. Background technique [0002] The existence of microorganisms such as bacteria will cause food to deteriorate, pollute medical care and laboratory environment, and bring losses to people's lives and property safety. Therefore, providing a sterile environment and sterilized equipment is of great significance to food production, the safety of medical and sanitary products and the maintenance of a sterile experimental environment. Fluorescent conjugated polyelectrolytes can produce a variety of active oxygen molecules under the action of light. The active oxygen molecules can interact with cells and cause irreversible cell death, so they have good application prospects in the field of sterilization. At present, fluorescent conjugated polyelectrolytes are only used...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08J7/06C08J5/18C09D1/00C09D105/04C09D177/04C09D165/00C08L83/04
CPCC08J5/18C08J7/0423C08J7/06C08J2383/04C08J2405/04C08J2465/00C08J2477/04C09D1/00C09D105/04C09D165/00C09D177/04
Inventor 李立东王晓瑜朱书贤刘录
Owner UNIV OF SCI & TECH BEIJING
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