Morphology and properties of renewable poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends with thermoplastic polyurethane

被引：16

作者：

Wang, Shichao ^{[1
]}

Xiang, Hengxue ^{[1
]}

Wang, Renlin ^{[1
]}

Peng, Cheng ^{[1
]}

Zhou, Zhe ^{[1
]}

Zhu, Meifang ^{[1
]}

机构：

[1] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China

来源：

POLYMER ENGINEERING AND SCIENCE | 2014年 / 54卷 / 05期

基金：

中国国家自然科学基金;

关键词：

THERMAL-PROPERTIES; CRYSTALLIZATION; COMPATIBILITY; COMPOSITES;

D O I：

10.1002/pen.23655

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/thermoplastic polyurethane (PHBV/TPU) composites were prepared by solution blending combined with melt processing in an effort to improve the toughness of PHBV and overcome the coalescence phenomena of TPU at the same time. The compatibility, cross-section morphology, crystal structure, thermal behaviour, and mechanical properties of composites were investigated. Field emission scanning electron microscopy results showed that no distinct interface was found in composites, uniformly dispersed PHBV/TPU composites were obtained. The incorporation of TPU did not change the basic crystalline structure of PHBV, but decreased its crystallinity. What's more, the integrity of PHBV spherulites structure was destroyed and the radial growth rate of spherulites was inhibited. Differential scanning calorimetry results analyzed by Jeziorny method indicated that the nucleation mode of composites did not change. Besides, when TPU content was up to 40 wt%, the initial degradation temperature of PHBV/TPU composite was increased by 5 degrees C, and the elongation-at-break was increased by 225% compared with those of PHBV. POLYM. ENG. SCI., 54:1113-1119, 2014. (c) 2013 Society of Plastics Engineers

引用

页码：1113 / 1119

页数：7

共 27 条

[1]

A J, 2010, POLYM ENG SCI, V50, P1440

[2] ISODIMORPHISM IN BACTERIAL POLY(BETA-HYDROXYBUTYRATE-CO-BETA-HYDROXYVALERATE) [J].