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Antibacterial biodegradable composite material as well as preparation method and application thereof

A technology of biodegradable and composite materials, which is applied in the field of antibacterial biodegradable composite materials and its preparation, can solve the problems of high technical content of biodegradable plastics, limited application of biodegradable materials, affecting food preservation period and storage period, etc. To achieve the effect of prolonging the fresh-keeping period of food, inhibiting the reproduction of microorganisms, and saving manpower and material resources

Inactive Publication Date: 2021-03-05
李小文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, biodegradable plastics contain high technical content, so the required cost is also high. Currently, the price of biodegradable plastic products on the market is more than double that of ordinary plastic products, and some completely degraded products are even 2 to 8 times higher. Limits the application of biodegradable materials
Plastic packaging materials, especially food packaging materials, will be subject to environmental pollution during use, causing bacteria, mold, and even viruses to grow on the surface of the materials, affecting the freshness and storage period of food

Method used

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  • Antibacterial biodegradable composite material as well as preparation method and application thereof
  • Antibacterial biodegradable composite material as well as preparation method and application thereof
  • Antibacterial biodegradable composite material as well as preparation method and application thereof

Examples

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preparation example Construction

[0023] In order to solve the technical problems of the above-mentioned background technology, the present invention provides a kind of antibacterial biodegradable composite material and preparation method thereof, specifically,

[0024] A kind of biodegradable composite material is mixed in proportion by following raw materials, and described proportion is percentage by weight:

[0025]

[0026] The preparation method of this antibacterial biodegradable composite material, it comprises the following steps:

[0027] (1) the dried plant fiber powder is ground into the nano-scale plant fiber powder of nano-scale fineness in advanced grinder;

[0028] (2) In terms of weight percentage, 20-65% of polybutylene adipate / terephthalate, 10-30% of polycaprolactone, 5-30% of polylactic acid, 5-20% of Compatibilizer, 5-8% plasticizer, 3-8% tackifier, 5-50% nano-plant fiber powder and 0.5-1.5% organic antibacterial agent are added to the mixer and mixed uniformly to obtain Mixture;

...

Embodiment 1

[0040] An antibacterial biodegradable composite material, which is formed by mixing the following raw materials in proportion, and the proportion is percentage by weight: 20% polybutylene adipate / terephthalate, 30% polycaprolactone, 5% polylactic acid, 10% glycidyl methacrylate, 5% glycerin, 4.5% maleic anhydride, 24% nano-plant fiber powder and 1.5% long-chain alkyl quaternary ammonium salt;

[0041] The preparation method of the antibacterial biodegradable composite material comprises the following steps:

[0042] (1) In the high-grade grinder, the dried wood chips, fruit husks, rice husks, and wheat husks are mixed together and ground into nano-scale fineness nano-plant fiber powder;

[0043] (2) In terms of weight percentage, 20% of polyadipate / butylene terephthalate, 30% of polycaprolactone, 5% of polylactic acid, 10% of glycidyl methacrylate, 5% % glycerin, 4.5% maleic anhydride, 24% nano-plant fiber powder and 1.5% long-chain alkyl quaternary ammonium salts are added t...

Embodiment 2

[0047] An antibacterial biodegradable composite material, which is formed by mixing the following raw materials in proportion, and the proportion is percentage by weight: 25% polybutylene adipate / terephthalate, 10% polycaprolactone, 5% polylactic acid, 20% tetrabutyl titanate, 5% acetylated triethyl citrate, 3.8% maleic anhydride, 30% nano plant fiber powder and 1.2% long chain alkyl trimethyl silylpropylammonium chloride;

[0048] The preparation method of the antibacterial biodegradable composite material comprises the following steps:

[0049] (1) Mix and grind dried rice stalks, wheat straw, sorghum stalks, cotton stalks, hemp stalks, and corncob powder into nano-scale fineness nano-plant fiber powder in a high-grade grinder;

[0050] (2) In terms of weight percentage, 25% polybutylene adipate / terephthalate, 10% polycaprolactone, 5% polylactic acid, 20% tetrabutyl titanate, 5% Acetylated triethyl citrate, 3.8% maleic anhydride, 30% nano-plant fiber powder and 1.2% long-c...

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Abstract

The invention discloses a biodegradable composite material as well as a preparation method and application thereof. The composite material is prepared by mixing the following raw materials in percentage by weight: 20-65% of polyadipic acid / butylene terephthalate, 10-30% of polycaprolactone, 5-30% of polylactic acid, 5-20% of compatilizer, 5-8% of plasticizer, 3-8% of tackifier, 5-50% of nano plantfiber powder and 0.5-1.5% of organic antibacterial agent. By means of the synergistic effect of the degradable plastic, the nano plant fiber powder and the organic antibacterial agent, the biodegradable plastic can be subjected to antibacterial modification, and therefore, the product is endowed with antibacterial and bactericidal effects, so that the product has the effects of inhibiting microbial reproduction and keeping the surface of the material clean; and the product has the effect of prolonging thefood fresh-keeping period when being used for food packaging; the degradable material canalso be used for packaging medical products; and the application range of the degradable material is expanded.

Description

technical field [0001] The invention relates to the field of biodegradable technology, in particular to an antibacterial biodegradable composite material and its preparation method and application. Background technique [0002] The application of plastics in the current real life has been everywhere, and it is obvious to all that it is difficult to degrade and cause harm to the environment. With the improvement of public awareness of environmental protection, degradable plastics have been used to protect the human living environment. However, biodegradable plastics contain high technical content, so the required cost is also high. Currently, the price of biodegradable plastic products on the market is more than double that of ordinary plastic products, and some completely degraded products are even 2 to 8 times higher. Limit the application of biodegradable materials. Plastic packaging materials, especially food packaging materials, will be subject to environmental polluti...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L67/02C08L97/02C08L71/02C08L5/08C08K5/053C08K5/19C08K5/10C08K5/11C08K5/544C08K5/17C08K5/092C08K5/12C08J5/18B65D65/46
CPCC08L67/04C08L67/02C08J5/18B65D65/466C08L2203/16C08L2205/16C08L2205/025C08L2205/035Y02W90/10
Inventor 罗惠民吴重秋李小文李小武罗嘉瑜
Owner 李小文
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