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Rapidly degradable antibacterial plastic film and preparation method thereof

A plastic film, rapid degradation technology, applied in the field of antibacterial plastic film, can solve the problems of insufficient mechanical properties and antibacterial properties, and achieve the effects of good mechanical properties, antibacterial properties and good dispersibility

Pending Publication Date: 2021-12-31
全晓婷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a substitute for conventional polymers, polylactic acid has obvious disadvantages, such as insufficient mechanical properties and antibacterial properties, etc.

Method used

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  • Rapidly degradable antibacterial plastic film and preparation method thereof
  • Rapidly degradable antibacterial plastic film and preparation method thereof
  • Rapidly degradable antibacterial plastic film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The preparation method of embodiment 1 plastic film comprises:

[0059] Step 1, adding 0.5 mass parts of nano-silica grafted graphene into 100 mass parts of chloroform, and dispersing by ultrasonic vibration for 2 hours to obtain a nano-silica grafted graphene dispersion;

[0060] Step 2, add 300 parts by mass of chloroform and 100 parts by mass of polylactic acid into the reactor, start stirring, add the aforementioned nano-silica grafted graphene dispersion after the polylactic acid is dissolved, and stir the mixture for 5 hours Coating film, after the volatilization of chloroform is completed, a plastic film is obtained.

Embodiment 2

[0061] In the preparation method of the plastic film of Example 2 and Comparative Examples 1-6, different raw materials were carried out according to the types and dosages listed in Table 4, and other steps, raw materials, parameters, etc. were the same as the preparation method of Example 1.

[0062] The consumption (mass part) of table 4 embodiment and comparative example plastic film preparation method raw material

[0063]

[0064] The plastic film sample thickness that embodiment and comparative example obtain is about 0.15mm, and the test standard that carries out performance test is as follows:

[0065] 1. The antibacterial test standard is: QB / T 2591-2003, wherein, the pure polylactic acid film used in the test process, its polylactic acid raw material and film preparation method are consistent with the examples and comparative examples;

[0066] 2. The mechanical performance test standard is: GB / T 1040-2006.

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Abstract

The invention provides a rapidly degradable antibacterial plastic film. The plastic film takes polylactic acid as matrix resin, and special nano silicon dioxide grafted graphene is added in the preparation process, so that compared with a conventional polylactic acid film, the prepared plastic film has better mechanical property and antibacterial property. The invention also provides a preparation method of the plastic film.

Description

technical field [0001] The invention relates to a rapidly degradable antibacterial plastic film and a preparation method of the plastic film. Background technique [0002] In recent years, biodegradable packaging materials with antimicrobial activity have been considered as one of the most promising active packaging materials. Antibacterial packaging materials can effectively inhibit microbial contamination and ensure food quality, thereby reducing or even avoiding the addition of chemical preservatives in food; degradable antibacterial packaging materials can alleviate global environmental problems caused by plastic packaging. Adding nanofillers with excellent antibacterial properties and high strength to degradable polymer substrates, the prepared nanocomposites not only retain the antibacterial properties of nanomaterials, but also significantly improve the mechanical properties of polymers. Therefore, in recent years received widespread attention. [0003] As a biodegr...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08K9/02C08K9/06C08K3/04C08J5/18
CPCC08J5/18C08J2367/04C08K9/02C08K9/06C08K3/042Y02W90/10
Inventor 全晓婷
Owner 全晓婷
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