Completely biodegradable polyhydroxyalkanote / poly(butylene succinate) blending alloy

A technology of polybutylene succinate and polyhydroxyalkanoate, which is applied in the field of materials, can solve the problems of accelerated crystallization nucleation, slow degradation rate, complex reaction products, etc., achieve good processability and promote crystallization Nucleation, the effect of expanding the scope of application

Active Publication Date: 2009-07-08
山东省意可曼科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, its processing performance is very good, but the disadvantages of PBS are its high crystallinity (30%--60%), brittle physical properties, not very high elongation at break, and slow degradation rate
[0006] The methods that have been disclosed to improve the defects of PBS mainly include: copolymerization, grafting and crosslinking, blending with starch, adding nucleating agents, etc., but both copolymerization and grafting can only stay in the research stage and are difficult to industrialize
Starch blending can only partially solve the problem of accelerating the biodegradation rate, and the nucleating agent can only improve and accelerate the crystallization nucleation, and the effect is not obvious
Such as the Chinese p

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The fully biodegradable polyhydroxyalkanoate / polybutylene succinate blend alloy of the present embodiment, by weight, has the following components: PHB content 55%, PBS 30%, cornstarch 8%, Talc powder 5%, polyethylene wax 0.75%, calcium stearate 0.5%, aluminate coupling agent 0.15%, boron nitride 0.3%, tetrakis [β-(3,5-di-tert-butyl-4-hydroxy 0.2% of pentaerythritol phenyl) propionate and 0.1% of tris(2,4-di-tert-butylphenyl) phosphite.

Embodiment 2

[0026] The fully biodegradable polyhydroxyalkanoate / polybutylene succinate blend alloy of the present embodiment, by weight, the contents of each component are: P3HB4HB (4HB molar content is 5%) content of 45%, PBS 35%, tapioca starch 10%, calcium carbonate 8%, EBS 0.5%, zinc stearate 0.5%, titanate coupling agent 0.2%, silicon dioxide 0.5%, tetrakis [β-(3,5-di tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol 0.2%, tris(2,4-di-tert-butylphenyl)phosphite 0.1%.

Embodiment 3

[0028] The fully biodegradable polyhydroxyalkanoate / polybutylene succinate blend alloy of the present embodiment, by weight, each component content is respectively: PHBV (HV molar content is 7%) content 30%, PBS45%, potato starch 18%, montmorillonite 5%, TAF0.5%, barium stearate 0.5%, titanate, aluminate composite coupling agent 0.1%, lanthanum benzoate 0.6%, 2-tertbutyl 0.2% of 6-(3-tert-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl acrylate and 0.1% of tris(2,4-di-tert-butylphenyl)phosphite.

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Abstract

The invention discloses a full biodegradable N-poly-ester/poly butylene succinate blending alloy, which is characterized in that the blending alloy is prepared from N-poly-ester, poly butylene succinct, starch, filler and the other auxiliary agents. The blending alloy uses the heat resistance, good processing and forming property, higher crystallizing property, good tensile strength and impact toughness of the poly butylene succinate to improve the defects of poor heat resistance, serious processing and forming viscous, slow crystallization and lower mechanical strength of the N-poly-ester, and reduce the cost and widen the application range, the obtained blending alloy has good comprehensive performance, and can be applied in the fileds of blowing film, extruding sheets, injecting one-off environmental supplies and medical treatment.

Description

【Technical field】 [0001] The invention relates to the field of materials, in particular to a fully biodegradable polyhydroxyalkanoate / polybutylene succinate blend alloy. 【Background technique】 [0002] The traditional plastic industry consumes a lot of petroleum energy and the "white pollution" has attracted more and more attention. Since the 1960s and 1970s, people have begun to research and develop biodegradable plastics. At present, there are A variety of biodegradable materials (Biodegradable materials) have come out. After biodegradation, biodegradable materials become water and carbon dioxide, which will not cause harm to the environment. [0003] Polyhydroxyalkanoates (PHAs) are a class of polymer polyesters synthesized by microorganisms, with molecular weights generally ranging from tens of thousands to several million, and widely exist in a variety of microorganisms in nature. Due to the difference of polymerized monomers and degrees of polymerization, PHAs can cha...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08K13/02C08L67/02C08L3/02
Inventor 蓝小平张向南
Owner 山东省意可曼科技有限公司
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