A kind of antibacterial pbat/pla composite film and preparation method thereof

A composite film, antibacterial technology, applied in the field of antibacterial PBAT/PLA composite film and its preparation, to achieve the effects of avoiding penetration, good light stability, antibacterial and good compatibility

Active Publication Date: 2018-07-13
常州绿之源高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of antibacterial PBAT / PLA composite film for the deficiencies in the prior art. The compatibility has been greatly improved, and the addition of low-molecular-weight light stabilizers and antibacterial agents and other additives can be avoided, which effectively avoids the penetration and migration of low-molecular substances during the use and storage of materials, and ultimately reduces the performance of materials. question

Method used

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  • A kind of antibacterial pbat/pla composite film and preparation method thereof
  • A kind of antibacterial pbat/pla composite film and preparation method thereof
  • A kind of antibacterial pbat/pla composite film and preparation method thereof

Examples

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Embodiment 1

[0049] An antibacterial PBAT / PLA composite film, comprising the following components and parts by weight:

[0050]

[0051] Wherein in the PBAT / PLA each component and parts by weight are:

[0052] PBAT (molecular weight 80,000) 80 parts

[0053] 40 parts of PLA (80,000 molecular weight).

[0054] Wherein the antibacterial compatibilizer is:

[0055]

[0056] Among them, R is -CH 3 or -CH 2 CH 3 .

[0057] A preparation method for an antibacterial PBAT / PLA composite film, comprising the steps of:

[0058] (1) Weigh the raw materials according to the parts by weight of the above components, and dry the PLA particles and PBAT particles in a vacuum drying oven at 70°C for 3-5h;

[0059] (2) Mix the dried PLA granules, PBAT granules, antibacterial compatibilizer, tetrabutyl titanate and lubricant in proportion and then add them to the twin-screw extruder for extrusion granulation, set the extruder The temperature in each zone is between 170-185°C;

[0060] (3) Add th...

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Abstract

The invention relates to the technical field of PBAT / PLA (Polybutylene Terephthalate / Polylactic Acid) blending and compatibilization and in particular relates to an antibacterial PBAT / PLA composite film. The antibacterial PBAT / PLA composite film is prepared from the following components in parts by weight: 94 to 98 parts of PBAT / PLA, 0.5 to 2 parts of an antibacterial compatibilizer, 0.5 to 2 parts of tetrabutyl titanate and 1 to 2 parts of a lubricant, wherein the PBAT / PLA is prepared from the following components in parts by weight: 60 to 80 parts of PBAT and 20 to 40 parts of PLA. According to the antibacterial PBAT / PLA composite film provided by the invention, after the antibacterial compatibilizer and the tetrabutyl titanate are added into a PBAT / PLA blending system, the compatibility of the system can be greatly improved, and addition of additives including a low molecular weight light stabilizer, an antibacterial agent and the like can be avoided; problems that lower molecular substances have penetration and transport phenomena in a material utilization and storage process, and the performance of the material are reduced are effectively avoided.

Description

technical field [0001] The invention relates to the technical field of PBAT / PLA blending and compatibilization, in particular to an antibacterial PBAT / PLA composite film and a preparation method thereof. Background technique [0002] With the rapid development of the national economy, the use of polymer materials has penetrated into all areas of people's lives, bringing great convenience to our lives. However, most commonly used polymer materials are difficult to biodegrade, which leads to serious environmental pollution problems, such as "white pollution". With people's high attention to environmental issues and the improvement of quality of life requirements, the development of fully biodegradable polymer materials has become a research hotspot at home and abroad. [0003] Polylactic acid (PLA) is an aliphatic polyester obtained by converting starch extracted from renewable plant resources such as corn and potatoes into glucose, which is fermented into lactic acid and fur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L67/04C08L71/02C08K5/10C08K5/098C08G65/332C08G65/333
CPCC08G65/3326C08G65/33396C08J5/18C08J2367/02C08J2467/04C08L67/02C08L2201/06C08L2201/08C08L2203/16C08L2205/02C08L2205/03C08L2205/08C08L67/04C08L71/02C08K5/10C08K5/098
Inventor 彭呈褚鹏飞
Owner 常州绿之源高分子材料有限公司
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