Full-biodegradable antibacterial PLA/PBAT film and preparation method thereof

An all-biological, PLA technology, applied in the field of fully biodegradable antibacterial PLA/PBAT film and its preparation, can solve the problems of less research on the antibacterial performance of PLA/PBAT film, achieve good dimensional stability, avoid high temperature inactivation, and improve compatibility effect

Inactive Publication Date: 2021-04-20
东莞市三至新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies on the antibacterial properties of PLA / PBAT films.

Method used

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  • Full-biodegradable antibacterial PLA/PBAT film and preparation method thereof
  • Full-biodegradable antibacterial PLA/PBAT film and preparation method thereof
  • Full-biodegradable antibacterial PLA/PBAT film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A fully biodegradable antibacterial PLA / PBAT film and its preparation method, including the following raw materials in parts by weight: PLA: 75 parts; PBAT: 25 parts; composite antibacterial agent: 12 parts; coupling agent: 3 parts; lubricant: 0.3 part; Antioxidant: 0.5 part;

[0037] The composite antibacterial agent is talc powder (Talc) modified by an organic antibacterial agent ε-polylysine hydrochloride (ε-PL). Wherein, the mass percentage of ε-PL is 30%.

[0038] The ε-PL is ε-polylysine hydrochloride produced by Zhejiang Xinyinxiang Bioengineering Co., Ltd.

[0039] The PLA is 4032D produced by Natureworks, USA.

[0040] The PBAT is C1200 produced by BASF, Germany.

[0041] The coupling agent is a mixture of tetrabutyl titanate and triethoxyvinylsilane in a weight ratio of 1:1.

[0042] Described lubricant is Malaysia EBS-SF lubricant.

[0043] The antioxidant is hindered phenolic antioxidant 1010 produced by BASF.

[0044] According to another aspect of th...

Embodiment 2

[0049] A fully biodegradable antibacterial PLA / PBAT film and its preparation method, including the following raw materials in parts by weight: PLA: 85 parts; PBAT: 15 parts; composite antibacterial agent: 15 parts; coupling agent: 3 parts; lubricant: 0.3 parts part; Antioxidant: 0.5 part;

[0050] The composite antibacterial agent is talc powder (Talc) modified by an organic antibacterial agent ε-polylysine hydrochloride (ε-PL). Wherein, the mass percentage of ε-PL is 30%.

[0051] The preparation method of this embodiment is roughly the same as that of Example 1, except that the consumption of PLA, PBAT and composite antibacterial agent is different from that of Example 1. In this embodiment, the weight part of PLA is 85 parts, the weight part of PBAT is 15 parts, and the weight part of composite antibacterial agent is 15 parts.

Embodiment 3

[0053] A fully biodegradable antibacterial PLA / PBAT film and its preparation method, including the following raw materials in parts by weight: PLA: 65 parts; PBAT: 35 parts; composite antibacterial agent: 8 parts; coupling agent: 3 parts; lubricant: 0.3 part; Antioxidant: 0.5 part;

[0054] The composite antibacterial agent is talc powder (Talc) modified by an organic antibacterial agent ε-polylysine hydrochloride (ε-PL). Wherein, the mass percentage of ε-PL is 30%.

[0055] The preparation method of this embodiment is roughly the same as that of Example 1, except that the consumption of PLA, PBAT and composite antibacterial agent is different from that of Example 1. In this embodiment, the weight part of PLA is 65 parts, the weight part of PBAT is 35 parts, and the weight part of composite antibacterial agent is 8 parts.

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Abstract

The invention relates to the technical field of full-biodegradable films, in particular to a full-biodegradable antibacterial PLA / PBAT film and a preparation method thereof. The full-biodegradable antibacterial PLA / PBAT film is prepared from the following raw materials in parts by weight: 65 to 85 parts of PLA, 15 to 35 parts of PBAT, 8 to 15 parts of a composite antibacterial agent, 2 to 5 parts of a coupling agent, 0.1 to 0.5 part of a lubricating agent and 0.3 to 0.8 part of an antioxidant, wherein the composite antibacterial agent is prepared from epsilon-polylysine hydrochloride and talcum powder through a modification preparation method. According to the fully-biodegradable antibacterial PLA / PBAT film provided by the invention, two fully-biodegradable polymers PLA and PBAT are selected as matrixes, and inorganic filler talcum powder is adopted as a carrier to disperse an antibacterial active center epsilon-polylysine hydrochloride, so the PLA / PBAT film becomes a fully-biodegradable novel composite material with excellent mechanical properties and antibacterial properties.

Description

technical field [0001] The invention relates to the technical field of fully biodegradable membranes, in particular to a fully biodegradable antibacterial PLA / PBAT membrane and a preparation method thereof. Background technique [0002] In recent years, with the increasing pollution of the ecological environment and the depletion of petroleum resources, some fully biodegradable materials, especially polyester biodegradable polymer materials, have received high attention. [0003] Polylactic acid (PLA) is currently the most mature and fully biodegradable bio-based resin in the industry. It has good biocompatibility, transparency and mechanical strength, but its brittle and hard texture limits its wide application; adipic acid- Polybutylene terephthalate (PBAT) is a fully biodegradable aromatic polyester developed in recent years. Compared with PLA, which is brittle and hard, PBAT has low strength and high elongation at break (≥600%), and is an elastomer material with good fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08K9/08C08K3/34C08J5/18
Inventor 黄卫忠
Owner 东莞市三至新材料技术有限公司
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