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首页> 外文期刊>Journal of Applied Polymer Science >Study of the Behavior of Blends of a Poly(hydroxybutyrate-valerate) Copolymer, Polypropylene, and SEBS
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Study of the Behavior of Blends of a Poly(hydroxybutyrate-valerate) Copolymer, Polypropylene, and SEBS

机译：聚（羟基丁酸-戊酸酯）共聚物，聚丙烯和SEBS的共混物的行为研究

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摘要

Polyhydroxyalkanoates are a type of polymers with a clear renewable origin, as different types of microorganisms can produce them. Unfortunately, their mechanical properties are not usually as good as those of conventional polymers and for a moment their price is relatively higher; these are two of the reasons why it is suggested in the bibliography that they can be employed forming part of blends with conventional polymers. In the present work, blends of a poly(hydroxybutyrate-valerate) (PHBV) copolymer and a Polypropylene resin have been Successfully processed using PHBV concentrations up to 20 phr with internal mixer and I hot plate press. Processability and applicability of such blends logically depend on their properties, and for this reason morphology, rheological, thermal properties, and tensile strength for all samples have been evaluated. Ternary blends, incorporating a poly(styrene-ethylene-butylene) copolymer have also been obtained and the influence of the blends properties has been analyzed. Results have shown that the rheological behavior and crystallization process of the system is markedly dependent on the blend composition. Although tensile strength significantly decreases with PHBV concentration, the use of low concentrations of the styrene-ethylene-butylene-styrene copolymer Could improve the elongation at break to I certain extent.
机译：聚羟基链烷酸酯是一种具有明显可再生来源的聚合物，因为不同类型的微生物可以产生它们。不幸的是，它们的机械性能通常不如常规聚合物那么好，并且一时间它们的价格相对较高。这是在参考书目中建议它们可以与常规聚合物共混的一部分的两个原因。在目前的工作中，使用内部混合器和热板压机成功地使用浓度高达20 phr的PHBV，成功地加工了聚（羟基丁酸-戊酸酯）（PHBV）共聚物和聚丙烯树脂的共混物。这种共混物的可加工性和适用性在逻辑上取决于其性能，因此，已经评估了所有样品的形态，流变学，热性能和拉伸强度。还获得了掺有聚（苯乙烯-乙烯-丁烯）共聚物的三元共混物，并且已经分析了共混物性能的影响。结果表明，系统的流变行为和结晶过程明显取决于共混物的组成。尽管抗张强度随PHBV浓度显着降低，但使用低浓度的苯乙烯-乙烯-丁烯-苯乙烯共聚物可在一定程度上改善断裂伸长率。

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