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Permanent antibacterial polymer composite material and preparation method thereof

A composite material and polymer technology, applied in the direction of single-component synthetic polymer rayon, hollow filament manufacturing, fiber chemical characteristics, etc., can solve the problems of reducing the antibacterial performance of materials, prone to precipitation, and loss of antibacterial agents, etc., to achieve Good electrochemical and thermal stability, low vapor pressure, good bactericidal and bacteriostatic effects

Active Publication Date: 2018-04-13
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during long-term use, the polymer composite materials prepared by ordinary physical blending methods are prone to precipitation and other phenomena, resulting in the loss of antibacterial agents. Pollution

Method used

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  • Permanent antibacterial polymer composite material and preparation method thereof
  • Permanent antibacterial polymer composite material and preparation method thereof
  • Permanent antibacterial polymer composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Step (1) First, 100g of PVDF and 0.001g of 1-vinyl-3-propylimidazolium bromide are added to the melt blending equipment (specific equipment), the temperature is 200°C, and when the rotation speed is 20rpm / min, kneading The mixing time is 1 min; when the rotating speed is 60 rpm, the mixing time is 5 min. Then discharge, obtain the blend of PVDF and IL, be denoted as PVDF / IL (100 / 0.001) blend.

[0054] Step (2) Put the above-mentioned PVDF / IL (100 / 0.001) film into a polyethylene ziplock bag. In electron beam irradiation, irradiation at normal temperature was performed at an irradiation dose of 20 kGy.

[0055] Step (3) directly press-molding the grafted blend obtained by the above-mentioned irradiation to obtain an antibacterial polymer composite membrane, the molding temperature is 200° C., the pressure is 15 MPa, the pressure is maintained for 2 minutes, and the thickness is 300 microns.

Embodiment 2

[0057] Step (1) First, 100g of PVDF and 0.002g of 1-vinyl-3-propylimidazolium bromide are added to the melt blending equipment (specific equipment), the temperature is 200°C, and when the rotation speed is 25rpm / min, kneading The mixing time is 1 min; when the rotating speed is 50 rpm, the mixing time is 6 min. Then discharge, obtain the blend of PVDF and IL, be denoted as PVDF / IL (100 / 0.002) blend.

[0058] Step (2) Put the above-mentioned PVDF / IL (100 / 0.002) film into a polyethylene ziplock bag. In electron beam irradiation, irradiation at normal temperature was performed at an irradiation dose of 25 kGy.

[0059] Step (3) directly press-molding the graft blend obtained by the above-mentioned irradiation to obtain an antibacterial polymer composite film, the molding temperature is 190° C., the pressure is 15 MPa, the pressure is maintained for 2 minutes, and the thickness is 300 microns.

Embodiment 3

[0061] Step (1) First, 100g PVDF and 0.04g 1-vinyl-3-propylimidazolium bromide are added to the melt blending equipment (specific equipment), the temperature is 190°C, and the rotation speed is 20rpm / min, mixing The time is 1min; when the rotation speed is 60rpm, the mixing time is 5min. Then discharge, obtain the blend of PVDF and IL, be denoted as PVDF / IL (100 / 0.04) blend.

[0062] Step (2) Put the above-mentioned PVDF / IL (100 / 0.04) film into a polyethylene ziplock bag. In electron beam irradiation, irradiation at normal temperature was performed at an irradiation dose of 50 kGy.

[0063] Step (3) directly press-molding the grafted blend obtained by the above-mentioned irradiation to obtain an antibacterial polymer composite membrane at a molding temperature of 195° C., a pressure of 10 MPa, a pressure hold of 2 minutes, and a thickness of 300 microns.

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Abstract

The invention discloses a permanent antibacterial polymer composite material and a preparation method thereof. According to the present invention, various materials such as polymer films, fibers, non-woven fabrics and the like are prepared by selecting different polymer molding technologies while an ion liquid is uniformly distributed and chemically bonded on the material surface, such that the material has good antibacterial effect; and the ion liquid and the polymer molecule are linked through the chemical bond, such that the loss of the ion liquid (antibacterial agent) due to migration andother causes during the long-term use can be avoided so as to maintain the permanent antibacterial performance.

Description

technical field [0001] The invention relates to a permanent antibacterial polymer composite material and a preparation method thereof, in particular to a polymer composite material uniformly distributed on the surface of the material to connect ionic liquids through chemical bonds and a preparation method thereof. Background technique [0002] Polymer-based films, fibers and non-woven materials with antibacterial properties are widely used in the fields of hygiene, medical treatment and catering, and are generally made of polyester, polytetrafluoroethylene, polyvinylidene fluoride, polyurethane and other film materials. [0003] In order to solve the antibacterial effect and antibacterial durability of polymer composites, researchers have been developing various polymer composites. Ionic liquid (Ionic Liquid, IL) refers to a substance that is liquid at room temperature and composed of ions. When in contact with bacteria, it can destroy the cell structure, thereby playing a g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/00C08F255/02C08F259/08C08F265/04C08F265/08C08F283/00C08F283/02C08F226/06C08F230/02C08F230/06C08F230/00C08F2/54D01F6/28D01F6/30D01F6/38D01F1/08
CPCC08F2/54C08F255/02C08F259/08C08F265/04C08F265/08C08F283/00C08F283/02C08L51/003D01F1/08D01F6/28D01F6/30D01F6/38C08F226/06C08F230/02C08F230/06C08F230/00
Inventor 李勇进管纪鹏
Owner HANGZHOU NORMAL UNIVERSITY
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