Effect of the shape of dispersed particles on the thermal and mechanical properties of biomass polymer blends composed of poly(L‐lactide) and poly(butylene succinate)
Effect of the shape of dispersed particles on the thermal and mechanical properties of biomass polymer blends composed of poly(L‐lactide) and poly(butylene succinate)
复制标题
DOI：
10.1002/app.31959
复制
发表时间：
2010-08
影响因子：
3
通讯作者：
Tadashi Yokohara;Kenzo Okamoto;M. Yamaguchi
中科院分区：
文献类型：
--
作者：
Tadashi Yokohara;Kenzo Okamoto;M. Yamaguchi
研究了聚乳酸（PLA）和纤维状聚丁二酸丁二醇酯（PBS）二元共混物的结构和性能，并与PLA中含有PBS球形颗粒的共混物进行了比较。我们发现，从电子显微镜观察，PBS纳米纤维具有大的纵横比产生的拉伸样品。PBS颗粒的表面积增大，表现出对PLA的成核能力，导致高结晶度，并增强了加热过程中的冷结晶。此外，拉伸样品中的PBS纤维在PLA的玻璃化转变温度和PBS的熔融温度之间的点范围内对机械性能具有主导作用。© 2010 Wiley Periodicals，Inc.应用聚合物科学杂志，2010年
The structure and properties of binary blends composed of poly(lactic acid) (PLA) and fibrous poly(butylene succinate) (PBS), which were prepared by an uniaxial stretching operation in the molten state, were studied and compared with those of blends having spherical particles of PBS in a continuous PLA phase. We found from electron microscope observation that PBS nanofibers with a large aspect ratio were generated in the stretched samples. Enlargement of the surface area of the PBS particles, which showed nucleating ability for PLA, led to a high degree of crystallization and enhanced the cold crystallization in the heating process. Moreover, the PBS fibers in the stretched samples had a dominant effect on the mechanical properties in the point range between the glass-transition temperature of PLA and the melting temperature of PBS. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010