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A high-strength polylactic acid composite film with antibacterial barrier properties

A technology of tough polylactic acid and composite membranes, applied in the field of preparation of polylactic acid composite membranes, can solve problems such as high brittleness, poor mechanical properties, and single functionality

Active Publication Date: 2017-11-24
HUNAN YIYONGFENG PRINGTING PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] 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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  • A high-strength polylactic acid composite film with antibacterial barrier properties

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Experimental program
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Effect test

Embodiment 1

[0053] A high-strength polylactic acid composite film with antibacterial barrier properties, the film raw materials include polylactic acid, EVOH, polylactic acid grafted

[0054] Glycidyl methacrylate, ethylene octene copolymer grafted glycidyl methacrylate, eight-arm maleic anhydride POSS,

[0055] 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: 45

[0059] Polylactic acid grafted glycidyl methacrylate: 8.4

[0060] Glycidyl methacrylate grafted ethylene octene: 7.6

[0061] Eight-arm maleic anhydride POSS: 2.8

[0062] Nano-TiO 2 : 3.6

[0063] Antioxidant: 2.5

[0064] Its preparation process is:

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

[0066] (2) Polylactic acid, EVOH, polylactic acid grafted with glycidy...

Embodiment 2

[0079] A high-strength polylactic acid composite film with antibacterial barrier properties, the film raw materials include polylactic acid, EVOH, polylactic acid grafted

[0080] Glycidyl methacrylate, ethylene octene copolymer grafted glycidyl methacrylate, eight-arm maleic anhydride POSS,

[0081] Nano TiO 2 , Antioxidant and anti-ultraviolet agent. The film is formed by multi-layer co-extrusion. It is also characterized by:

[0082] The mass ratio (calculated by mass parts) of each component in the raw material is:

[0083] Polylactic acid: 100

[0084] EVOH: 35

[0085] Polylactic acid grafted glycidyl methacrylate: 7.5

[0086] Glycidyl methacrylate grafted ethylene octene: 7.5

[0087] Eight-armed maleic anhydride POSS: 3.2

[0088] Nano-TiO 2 :4

[0089] Antioxidant: 3

[0090] Its preparation process is:

[0091] (1) Vacuum dry all raw materials at 50°C for 24 hours and set aside;

[0092] (2) Polylactic acid, EVOH, polylactic acid grafted with glycidyl...

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Abstract

The invention relates to a high-strength polylactic acid composite film with antibacterial properties. The composite film raw materials include polylactic acid, EVOH, polylactic acid grafted with glycidyl methacrylate, and ethylene octene copolymer grafted with glycidyl methacrylate. , eight-arm maleic anhydride POSS, nano-TiO 2 , antioxidant and anti-ultraviolet agent. The film is formed by multi-layer co-extrusion. The composite film has excellent strength and toughness, has good oxygen barrier property to gas, and has good antibacterial effect, and can be applied to the field of environmental protection packaging film.

Description

technical field [0001] The invention relates to a preparation method of a polylactic acid composite film, in particular to a high-strength, high-toughness, and [0002] A method for preparing a polylactic acid composite film with high barrier property and antibacterial effect. Background technique [0003] Although plastic materials have excellent performance and wide applicability, they are derived from petroleum products and cannot be degraded. [0004] It is understood that in today's increasingly serious resource crisis and environmental pollution, it has become a goal to find alternative materials with excellent performance and renewable [0005] The top priority of research in the field of pre-materials. [0006] Among the current degradable materials, starch has been intensively studied and passed through due to its cheap price and wide range of sources. [0007] Modified and compounded to prepare a variety of daily and industrial products, such as starch-based fil...

Claims

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Application Information

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