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High-strength and high-toughness polylactic acid composite film with antimicrobial and barrier properties

A technology of tough polylactic acid and composite film, applied in the field of preparation of polylactic acid composite film, can solve the problems of high brittleness, single function, poor mechanical properties, etc., and achieve the effects of improving mechanical properties, improving gas barrier properties, and improving dispersion.

Active Publication Date: 2016-03-30
HUNAN YIYONGFENG PRINGTING PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of high brittleness, poor mechanical properties and single function of polylactic acid film materials, and provide a method for preparing polylactic acid composite films with high strength, high toughness, high barrier property and antibacterial effect

Method used

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  • High-strength and high-toughness polylactic acid composite film with antimicrobial and barrier properties

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A high-strength polylactic acid composite film with antibacterial barrier properties, the film raw materials include polylactic acid, EVOH, polylactic acid grafted glycidyl methacrylate, ethylene octene copolymer grafted glycidyl methacrylate, eight-armed Maleic anhydride POSS, Nano TiO 2 , antioxidant and anti-ultraviolet agent. The film is formed by multi-layer co-extrusion. It is also characterized by:

[0034] The mass ratio (calculated by mass parts) of each component in the raw material is:

[0035] Polylactic acid: 100

[0036] EVOH: 45

[0037] Polylactic acid grafted glycidyl methacrylate: 8.4

[0038] Glycidyl methacrylate grafted ethylene octene: 7.6

[0039] Eight-arm maleic anhydride POSS: 2.8

[0040] Nano-TiO 2 : 3.6

[0041] Antioxidant: 2.5

[0042] Its preparation process is:

[0043] (1) Vacuum dry all raw materials at 50 degrees for 24 hours and set aside;

[0044] (2) After high-speed blending of polylactic acid, EVOH, polylactic acid gr...

Embodiment 2

[0055] A high-strength polylactic acid composite film with antibacterial barrier properties, the film raw materials include polylactic acid, EVOH, polylactic acid grafted glycidyl methacrylate, ethylene octene copolymer grafted glycidyl methacrylate, eight-armed Maleic anhydride POSS, Nano TiO 2 , antioxidant and anti-ultraviolet agent. The film is formed by multi-layer co-extrusion. It is also characterized by:

[0056] The mass ratio (calculated by mass parts) of each component in the raw material is:

[0057] Polylactic acid: 100

[0058] EVOH: 35

[0059] Polylactic acid grafted glycidyl methacrylate: 7.5

[0060] Glycidyl methacrylate grafted ethylene octene: 7.5

[0061] Eight-arm maleic anhydride POSS: 3.2

[0062] Nano-TiO 2 :4

[0063] Antioxidants: 3

[0064] Its preparation process is:

[0065] (1) Vacuum dry all raw materials at 50 degrees for 24 hours and set aside;

[0066] (2) After high-speed blending of polylactic acid, EVOH, polylactic acid grafte...

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Abstract

The present invention relates to high-strength and high-toughness polylactic acid composite film with antimicrobial and barrier properties. Raw materials of the high-toughness polylactic acid composite film comprises polylactic acid, EVOH, polylactic acid grafted glycidyl methacrylate, ethylene-octene copolymer grafted glycidyl methacrylate, eight-arm maleic anhydride POSS, nano TiO2, an antioxidant, and an anti-UV agent. The composite film is formed through multilayer coextrusion. The composite film has excellent strength and toughness, a good oxygen barrier property to gas, and a good antimicrobial effect, and can be used in the field of the environmentally friendly packaging film.

Description

technical field [0001] The invention relates to a preparation method of a polylactic acid composite film, in particular to a preparation method of a polylactic acid composite film with high strength, high toughness, high barrier property and antibacterial effect. Background technique [0002] Although plastic materials have excellent performance and wide applicability, they are derived from petroleum products and cannot be degraded. In today's resource crisis and environmental pollution are becoming more and more serious, looking for excellent performance and renewable alternative materials has become the current research field in the field of materials. top priority. [0003] Among the current degradable materials, starch has been deeply studied due to its cheap price and wide range of sources, and a variety of daily and industrial products have been prepared through modification and compounding, such as starch-based films, starch tableware, etc. However, starch has its na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L23/08C08L51/08C08L51/06C08K5/549C08K3/22B32B27/06B32B27/18B32B27/36B32B37/00B29C69/00
Inventor 陈一
Owner HUNAN YIYONGFENG PRINGTING PACKAGING
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