Biodegradable PLA embossed film and preparation method thereof

A biological and embossing technology, applied in the field of biodegradable PLA embossed film and its preparation, can solve the problems of PLA film stiffness reduction, and achieve the effect of reducing elongation at break and tensile strength, and increasing stiffness

Inactive Publication Date: 2020-08-07
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

Although adding a plasticizer to the PLA component can emboss the surface of the PLA film, the stiffness of the PLA film will inevitably decrease after the embossing process is completed.

Method used

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  • Biodegradable PLA embossed film and preparation method thereof
  • Biodegradable PLA embossed film and preparation method thereof
  • Biodegradable PLA embossed film and preparation method thereof

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Experimental program
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Embodiment Construction

[0036] The present invention is described in further detail now in conjunction with embodiment.

[0037] The preparation embodiment of self-made compatibilizer:

[0038] (1) Add 1g of p-toluenesulfonic acid into a 250mL three-necked flask, add 5g of 4,9-dimethyl-4-hydroxymethyl-8-decen-1-ol, and heat to a reaction temperature of 120°C;

[0039] (2) Add 7.5g p-ethylbenzoic acid in the above-mentioned reaction system, continue heating, the reaction system is in the reflux water separation state, and the -OH peak in the infrared detection reaction system disappears, then the reaction ends;

[0040] (3) the mixed solution in the there-necked flask is washed with sodium carbonate solution and water respectively, after drying, carry out distillation to remove catalyzer, p-ethylbenzoic acid, promptly obtain self-made compatibilizer, its 1 HNMR (400MHz, DMSO-d6): δ (ppm) : 0.89(s, 3H, -C-CH 3 ), 1.13(t, 4H, -C-CH 2 -), 1.18(t, 6H, -CH 3 ), 1.31 (m, 2H, -CH 2 -), 1.70-1.82 (m, 6H...

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Abstract

The invention relates to the technical field of high polymer materials, and in particular, relates to a biodegradable PLA embossed film and a preparation method thereof. Embossing on the surface of aPLA film is achieved, and the PLA embossed film is enabled to have relatively high stiffness; the invention provides the biodegradable PLA embossed film which is composed of the following components in parts by weight: 200 parts of modified PLA, 50 to 70 parts of PBAT, 30 to 50 parts of a self-made compatibilizer and 0.1 to 0.2 part of a photoinitiator. The method disclosed by the invention can realize embossing on the PLA film smoothly; the molecular structure of the self-made compatibilizer provided by the invention contains double bonds; under the action of illumination and a photoinitiator, self-made compatibilizer molecules are subjected to self-polymerization in a PLA embossed film system and also subjected to a photopolymerization reaction with unsaturated double bonds on a polylactic acid molecular structure, the elongation at break and the tensile strength of the PLA embossed film can be reduced to a certain extent through the reaction, and the stiffness of the PLA film is improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a biodegradable PLA embossed film and a preparation method thereof. Background technique [0002] Plastic is one of the greatest inventions of mankind and a symbol of the progress of human civilization. Compared with traditional materials (metal, glass, wood, etc.), plastic has advantages that traditional materials cannot match, such as light weight, low price, and good processability And chemical stability is good, deeply loved by people. Since the appearance of plastics, they have been rapidly used in various industries such as food packaging, agriculture, construction, automobiles, aerospace, etc. Now there are plastics in all aspects of human life, and human beings cannot live without plastics. [0003] The application of plastics has both positive and beneficial aspects, as well as negative aspects. Extensive use of plastics will produce "white pollution" that is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08F283/02C08F218/12C08J5/18C08L67/06C08L67/02
CPCC08F283/01C08F283/02C08J5/18C08J2367/06C08J2467/02C08F218/12
Inventor 褚鹏飞
Owner 常州绿之源高分子材料有限公司
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