Degradable film and preparation method thereof

A technology for degrading films and films, applied in chemical instruments and methods, sustainable manufacturing/processing, climate sustainability, etc. The effect of low temperature heat sealing

Active Publication Date: 2020-07-14
睿泊(中国)环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PLGA has good biocompatibility and degradability, and can be used in a wide range of applications. However, due to factors such as its price and excessive degradation rate, the current application of PLGA is mostly concentrated in the biomedical field, such as surgical sutures, orthopedics. Immobilization, tissue repair materials and drug controlled release systems, etc., its application in replacing traditional non-degradable plastic films in daily life is yet to be developed

Method used

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  • Degradable film and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The degradable film of this embodiment includes an inner layer and an outer layer, wherein the inner layer comprises the following components in parts by weight: 80 parts of polylactic acid-glycolic acid copolymer, 65 parts of polycaprolactone, methacrylic acid shrinkage 4 parts of glyceride grafted polycaprolactone, 10 parts of polyhydroxyalkanoate, 2 parts of polylactic acid-caprolactone copolymer, 0.2 part of flake graphite;

[0043] The outer layer includes the following components in parts by weight: 100 parts of polylactic acid-glycolic acid copolymer, 60 parts of polycaprolactone, 20 parts of diacetyl epoxy vegetable glyceryl oleate, glycidyl methacrylate graft 10 parts of polylactic acid-glycolic acid copolymer, 1.8 parts of nano calcium carbonate, 1.2 parts of sodium alginate, 4 parts of slip agent, 12 parts of antistatic agent, 0.4 part of ultraviolet absorber;

[0044]The degradable film of this embodiment also includes a core layer, wherein the core layer in...

Embodiment 2

[0057] The degradable film of this embodiment includes an inner layer and an outer layer, wherein the inner layer comprises the following components in parts by weight: 60 parts of polylactic acid-glycolic acid copolymer, 20 parts of polycaprolactone, methacrylic acid shrinkage 15 parts of glyceride grafted polycaprolactone, 2 parts of poly-β-hydroxybutyric acid, 2 parts of polymethylethylene carbonate, 0.5 part of talcum powder, 1 part of diatomaceous earth;

[0058] Wherein the outer layer comprises the following components in parts by weight: 70 parts of polylactic acid-glycolic acid copolymer, 50 parts of polycaprolactone, 12 parts of diacetyl epoxy vegetable glyceryl oleate, glycidyl methacrylate 18 parts of grafted polylactic acid-glycolic acid copolymer, 0.3 parts of chitosan, 1.5 parts of montmorillonite, 6 parts of functional additives;

[0059] The degradable of this embodiment also includes a core layer, the core layer includes the following components in parts by w...

Embodiment 3

[0072] The degradable film of this embodiment includes an inner layer and an outer layer, wherein the inner layer comprises the following components in parts by weight: 70 parts of polylactic acid-glycolic acid copolymer, 45 parts of polycaprolactone, glycidyl methacrylate 2.5 parts of ester-grafted polycaprolactone, 15 parts of polybutylene adipate terephthalate, 4 parts of polylactic acid-caprolactone copolymer, and 4 parts of open-ended masterbatch;

[0073] Wherein the outer layer comprises the following components in parts by weight: 60 parts of polylactic acid-glycolic acid copolymer, 20 parts of polycaprolactone, 8 parts of diacetyl epoxy vegetable glyceryl oleate, glycidyl methacrylate 2 parts of dendritic polylactic acid-glycolic acid copolymer, 7.5 parts of mica powder, 3 parts of cellulose nanocrystals, and 4 parts of functional additives.

[0074] This embodiment provides a method for preparing the above-mentioned degradable poly film. The preparation steps are as...

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Abstract

The invention discloses a degradable film which comprises an inner layer and an outer layer, and the inner layer is prepared from the following components in parts by weight: 60-80 parts of polylacticacid-glycolic acid copolymer, 20-65 parts of polycaprolactone, 2.5-15 parts of modified compatilizer, 4-19 parts of flexibilizer and 0.2-4 parts of anti-blocking agent; the outer layer is prepared from the following components in parts by weight: 60 to 100 parts of polylactic acid-glycolic acid copolymer, 20 to 60 parts of polycaprolactone, 8 to 20 parts of diacetyl epoxy vegetable glycerin oleate, 2 to 18 parts of modified compatilizer, 1.8 to 30 parts of filler and 4 to 16.4 parts of functional additive. The film has good low-temperature heat sealability, tensile mechanical strength and elongation at break, and can be applied to agricultural mulching films, preservative films, shopping bags and the like.

Description

technical field [0001] The invention relates to the technical field of degradable materials, in particular to a degradable film and a preparation method thereof. Background technique [0002] In modern life, express packaging, adhesive tape, shopping bags, garbage bags, food packaging and other applications of plastic products abound. Lightweight, beautiful, and soft plastic products provide convenience to our daily life, but plastic products are difficult to degrade after the end of their service life, which has a great negative impact on the contemporary and future social environment. The "New Plastic Economics" report stated that only 14% of plastic packaging in the world is recycled, and only 10% of the plastic packaging is effectively recycled in the end. The current treatment methods for traditional non-degradable plastics mainly rely on incineration or landfill. These plastics buried in the soil have been degraded for more than 300 years. Plastic particles have ente...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/18B32B27/08B32B27/06B32B7/022B32B33/00C08J5/18C08L67/04C08L51/08C08L5/04C08K7/00C08K3/04C08K13/02C08K3/26
CPCB32B27/36B32B27/18B32B27/08B32B7/022B32B33/00C08J5/18C08J2367/04C08J2467/04C08J2451/08C08J2405/04C08K7/00C08K3/04C08K13/02C08K2201/011C08K2003/265B32B2307/54B32B2307/5825B32B2307/51B32B2307/716Y02W90/10
Inventor 贺晓艳安家成张晓楠张迎波
Owner 睿泊(中国)环保科技有限公司
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