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Antibacterial plant fiber reinforced composite material as well as preparation method and application thereof

A technology for reinforcing composite materials and plant fibers is applied in the field of antibacterial plant fiber reinforced composite materials and their preparation, and can solve the problems of poor antibacterial timeliness and no antibacterial effect.

Active Publication Date: 2020-06-05
贵州省材料技术创新基地
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current method is usually to impregnate the fiber with an antibacterial agent to make it antibacterial, but the antibacterial agent is easy to dissolve in this way, and the antibacterial effect will hardly exist after several washings, that is, the antibacterial timeliness is poor

Method used

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  • Antibacterial plant fiber reinforced composite material as well as preparation method and application thereof

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Effect test

Embodiment 1

[0019] A preparation method of antibacterial plant fiber reinforced composite material, comprising the following steps:

[0020] Step 1: Soak the wheat straw in a 10% sodium hydroxide solution for 1 hour, then wash it with clean water and then freeze-dry it;

[0021] Step 2. Mix 10g of wheat straw soaked in alkaline solution, 1g of 3-mercaptopropyltrimethoxysilane and 1L of deionized water and adjust the pH value to 4, stir and react at 25°C for 1h to obtain surface mercaptolation Plant fiber modified materials;

[0022] Step 3: Add 2g of surface thiolated plant fiber modified material, 1g of methacryloyloxyethyltrimethylammonium chloride, and 0.1g of benzoin ethyl ether to 50ml of ethanol and pure water mixed solution with a volume ratio of 1:1 , adjust the pH value to 7.5, and react for 0.5h under the irradiation of ultraviolet light to produce thioene click reaction to obtain antibacterial plant fibers;

[0023] Step 4: blending 10 g of antibacterial plant fibers with 70 ...

Embodiment 2

[0025] A preparation method of antibacterial plant fiber reinforced composite material, comprising the following steps:

[0026] Step 1. Soak the corn stalks in a 5% sodium hydroxide solution for 24 hours, then wash them with clean water and freeze-dry them;

[0027] Step 2. Mix 20g of wheat straw soaked in alkaline solution, 5g of 3-mercaptopropyltrimethoxysilane and 100ml of deionized water and adjust the pH value to 7, stir and react at 25°C for 24h to obtain surface mercaptolation Plant fiber modified materials;

[0028] Step 3, adding 10g of surface mercaptolated plant fiber modified material, 5g of diene dimethyl ammonium chloride, and 0.5g of azobisisobutyronitrile into 100ml of ethanol and pure water mixed solution with a volume ratio of 1:1, Adjust the pH value to 11, and react for 1 hour under the irradiation of ultraviolet light to produce mercaptoene click reaction to obtain antibacterial plant fibers;

[0029] Step 4, blending 30 g of antibacterial plant fibers ...

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Abstract

The invention discloses an antibacterial plant fiber reinforced composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) soaking natural plant fibers in an alkaline solution; (2) mixing natural plant fibers, 3-mercaptopropyltrimethoxysilane and deionized water to obtain a plant fiber modified material; (3) adding the plant fiber modified material, an alkenyl quaternary ammonium salt monomer and an initiator into a mixed solution of ethanol and pure water, and carrying out a mercapto-alkene click reaction under the irradiation of an ultraviolet lamp to obtain antibacterial plant fibers; and (4) blending the antibacterial plant fiber with a matrix material to obtain the antibacterial plant fiber reinforced compositematerial. According to the invention, due to the advantages and characteristics of the thiol-ene click chemical reaction, the quaternary amine functional group-containing polymer molecular chain is applied to modification of natural plant fibers, wherein the plant fibers are endowed with good antibacterial performance, fiber surface modification by the polymer is realized through regulation and control of the conjugate molecular chain, so that the application range of the plant fibers is widened, and the application value of the plant fibers is improved.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to an antibacterial plant fiber reinforced composite material and its preparation method and application. Background technique [0002] Bacteria, viruses, fungi and other pathogenic microorganisms widely exist in nature. And these external microorganisms are easy to attach to the surface of objects, and then enter the human body through contact and other ways to cause diseases. However, in humid areas such as the south, due to the water absorption of textile fibers, the clothes are not easy to dry, and the clothes are prone to mildew. Therefore, antibacterial agents will be added to some fibers to ensure their antibacterial properties and reduce the probability of human infection and moldy clothing. The current method is usually to impregnate the fiber with an antibacterial agent to make it antibacterial, but in this way the antibacterial agent is easy to dissolve, and the ant...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08L97/02C08J5/06
CPCC08J5/06C08J2323/12C08J2323/06C08J2497/02
Inventor 杜西兰靳进波宋季岭龙雪彬熊一鸣石敏
Owner 贵州省材料技术创新基地
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