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Fully biodegradable polyhydroxyalkanoate/polybutylene succinate blend gold

A technology of polybutylene succinate and polyhydroxyalkanoate, which is applied in the field of materials, can solve the problems of accelerated crystallization nucleation, complex reaction products, high melting temperature, etc., and achieve good processability, accelerated degradation rate, The effect of expanding the range of application

Active Publication Date: 2012-02-15
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 published patent application [publication number is CN101045810A] proposed to use PBS or PLA (polylactic acid) and cross-linking agent to improve PHB (poly-β-hydroxybutyrate) and PHBV (poly-β-hydroxybutyrate-β-hydroxypentyl acid ester) material toughness, although the toughness of PHB and PHBV is improved to a certain extent, but this invention is to make PHB or PHBV and PBS co-crosslinking by crosslinking agent under melting condition, and melting temperature is higher (160-190 ℃), The reaction time is also longer, and PHB or PHBV is prone to produce harmful substances such as crotonic acid under such reaction conditions, the reaction yield is low, the reaction product is complicated, and the expected reaction effect cannot be achieved

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 completely biodegradable polyhydroxyalkanoate / polybutylene succinate blended alloy, which is characterized in that: the blended alloy is composed of polyhydroxyalkanoate, polybutylene succinate Alcohol esters, starch, fillers and other additives. The blended alloy of the present invention utilizes the heat resistance, good processability, high crystallinity, good tensile strength and impact toughness of polybutylene succinate to improve the heat resistance of polyhydroxyalkanoate materials Poor, severe viscosity during molding processing, slow crystallization, low mechanical strength and other defects, and reduce costs, expand the scope of application, the obtained blend alloy has good comprehensive properties, and can be used for blown film, extruded sheet, injection molding disposable environmental protection Supplies, medical and other fields.

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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Patent Type & Authority Patents(China)
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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