Preparation and application method of a flexible composite film with bactericidal function

A composite film and flexible technology, which is 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, efficient sterilization performance, and good flexibility

Active Publication Date: 2019-03-29
UNIV OF SCI & TECH BEIJING
View PDF2 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation and application method of a flexible composite film with bactericidal function
  • Preparation and application method of a flexible composite film with bactericidal function
  • Preparation and application method of a flexible composite film with bactericidal function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A preparation and application method of a flexible composite film with sterilization function includes the following steps:

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

[0054] Step 2. Put the prepared polydimethylsiloxane film into the UV-ozone 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 the film with a concentration of 0.05M In the glucose solution, the temperature is raised to within the temperature range of 30°C, the temperature is kept and stirred for 60 minutes; the flexible silver nano film is obtained by washing and drying;

[0055] Step 3. Immerse the prepared silver nano-film in a 0...

Embodiment 2

[0059] A preparation and application method of a flexible composite film with sterilization function includes the following steps:

[0060] Step 1. Mix the polydimethylsiloxane stock solution and the curing agent in a ratio of 10:1 by volume, stir and pour it into a polystyrene petri dish; then put it in a vacuum drying oven and let it stand for 0.5 hours ; Then heat up to 50 ℃ temperature range, heat preservation for 0.5 hours, to prepare a flexible polydimethylsiloxane film;

[0061] Step 2. Put the prepared polydimethylsiloxane film into the UV-ozone 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 the film with a concentration of 0.05M In the glucose solution, heat to the temperature range of 50°C, keep warm and stir for 60 minutes; rinse and dry to obtain the flexible silver nano film;

[0062] Step 3. Immerse the prepared silver nano-film in a polylysine solution with a concentratio...

Embodiment 3

[0066] A preparation and application method of a flexible composite film with sterilization function includes the following steps:

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

[0068] Step 2. Put the prepared polydimethylsiloxane film into an ultraviolet ozone cleaning machine for 15 minutes; then quickly immerse in a 0.1M silver ammonia solution and stir for 30 minutes; then immerse in a 0.1M concentration In the glucose solution, heat to the temperature range of 50°C, keep warm and stir for 60 minutes; rinse and dry to obtain the flexible silver nano film;

[0069] Step 3. Immerse the prepared silver nano-film in a polylysine solution with a concentration of 1mg / mL for ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

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 sterilization function. Background technique [0002] The existence of bacteria and other microorganisms can cause food deterioration, pollute medical and health and laboratory environments, 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 laboratory environment. Fluorescent conjugated polyelectrolyte can produce a variety of reactive oxygen molecules under the action of light, and the reactive oxygen molecules can interact with cells, leading to irreversible cell death, so it has a good application prospect in the field of sterilization. At present, fluorescent conjugated polyelectrolytes are ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
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
OwnerUNIV OF SCI & TECH BEIJING