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Controllable light/biodegradation plastic material

A plastic material, dual-degradable technology, applied in the field of controllable photo/biological dual-degradable plastic materials, can solve the problems of difficult degradation, hinder social economic and environmental sustainable development, etc., achieve environmental protection, easy industrial production, improve The effect of water resistance and strength

Inactive Publication Date: 2009-12-23
杨凌瑞丰环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because it is difficult to degrade (ordinary plastics can be completely degraded in 200-400 years), white pollution has become a worldwide public hazard that endangers the social environment and seriously hinders the sustainable development of social economy and the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Polyvinyl alcohol 25

[0026] Butanediol 10

[0027] Ethylene-acrylic acid copolymer 15

[0028] Butyraldehyde 7

[0029] Photosensitizer cerium stearate 0.3

[0030] In a high-speed mixer, mix and stir polyvinyl alcohol, glycerin and acetaldehyde for 20 minutes, then heat up to 120°C and maintain for 10 minutes, add ethylene-acrylic acid copolymer and cerium stearate, and heat up to 160°C , maintained for 20 minutes, and granulated.

[0031] The prepared biodegradable plastic was subjected to enzymolysis for 36 hours, and the degradation degree was 70.5%.

[0032] After 30 hours of UV exposure, the biodegradable plastic turned yellow and became brittle.

Embodiment 2

[0034] Polyvinyl alcohol 40

[0035] Glycerol 15

[0036] Ethylene-acrylic acid copolymer 30

[0037] Propionaldehyde 10

[0038] Photosensitizer Benzophenone 0.15

[0039] Photosensitizer cobalt acetylacetonate 0.15

[0040] The preparation method is similar to Example 1.

[0041] The prepared biodegradable plastic was subjected to enzymatic hydrolysis for 36 hours, and the degradation degree was 74.6%.

[0042] After 20 hours of ultraviolet radiation, the biodegradable plastic turned yellow and became brittle.

[0043] Experimental studies have found that when benzophenone, cobalt acetylacetonate, zirconium neodecanoate, cerium hydrogen phthalate or fatty acid iron are used alone, biodegradable plastics will not turn yellow, become brittle, and age and degrade after 30 hours of ultraviolet exposure. . However, the composite photosensitizer of benzophenone and cobalt acetylacetonate can be degraded in only 20 hours, indicating that these two photodegradants have a syne...

Embodiment 3

[0045] Polyvinyl alcohol 30

[0046] Sorbitol 15

[0047] Borax 5

[0048] Ethylene-acrylic acid copolymer 25

[0049] Glyoxal 8

[0050] Iron stearate 0.3

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PUM

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Abstract

The invention discloses a controllable light / biodegradation plastic material, made of a polymer compound. The polymer compound comprises the following components and by weight part: 20 to 40 parts of polyvinyl alcohol, 5 to 25 parts of polyol, 0 to 10 parts of borax, 20 to 40 parts of ethylene acrylic acid copolymer, 5 to 15 parts of organic aldehyde compound and 0.05 to 0.5 part of photosensitizer. The invention fulfills the double functions of biodegradation and light degradation, mainly applies photocatalysis degradation to the ethylene acrylic acid copolymer which is difficult to carry out the biodegradation, and mainly carries out microbial degradation on the polyvinyl alcohol.

Description

technical field [0001] The invention relates to a controllable optical / biological double-degradable plastic material, which belongs to the technical field of international patent classification C08J5 / 00 "manufacturing of products or molding materials containing polymer substances". Background technique [0002] With the increasing use of plastics, a large amount of plastic waste is generated. Because it is difficult to degrade (ordinary plastics can be completely degraded in 200-400 years), white pollution has become a worldwide public hazard that endangers the social environment and seriously hinders the sustainable development of social economy and the environment. In order to solve this serious social problem, more and more scholars advocate the development and application of degradable plastics, and regard it as an ideal way to solve this world problem. At present, it has become a hot spot in the development of countries all over the world. Many developed countries, suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L23/08C08K13/02C08K3/38C08K5/07C08K5/098
Inventor 王治
Owner 杨凌瑞丰环保科技有限公司
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