Rheological study on poly-D(-)(3-hydroxybutyrate) and its blends with poly(ethylene oxide)
Rheological study on poly-D(-)(3-hydroxybutyrate) and its blends with poly(ethylene oxide)
复制标题
聚-D(-)(3-羟基丁酸酯)及其与聚环氧乙烷共混物的流变学研究
DOI：
--
复制
发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Siyoung Choi
中科院分区：
文献类型：
--
作者：
H. Choi;Shin;Joong;H. Lee;Siyoung Choi
Aspects of thermal, morphological, and rheological properties of biodegradable poly-D(-)(3-hydroxybutyrate) (PHB) blended with poly(ethylene oxide) (PEO) have been studied. Thermal properties and morphology of the blends were examined by scanning electron microscopy and differential scanning calorimetry, respectively. A rotational rheometer with parallel plate geometry was also adopted to investigate the rheological properties of these blends. In addition, dynamic viscoelasticity was measured by a Rheovibron as functions of time and temperature. From these measurements, PHB and PEO were observed to be miscible in the melt state. In the case of the blend system 80/20 PHB/PEO by weight, the vacant domains of the PHB were filled with PEO particles, and this morphological state enhanced the rheological properties. Furthermore, PHB and its blends were found to have high crystallinities, but to have unstable thermal behavior about T m .
