标题:
聚乳酸/聚氧乙烯薄膜的性能研究Properties of Polylactic Acid/Polyethylene Oxide Thin Film
作者:
袁琴, 李海东, 程凤梅
关键字:
聚乳酸, 聚氧乙烯, 薄膜, 共混物, 结晶Poly(Lactic Acid), Poly(Ethylene Oxide), Thin Film, Blends, Crystalline
期刊名称:
《Material Sciences》, Vol.6 No.6, 2016-11-29
摘要:
本文采用DSC测试了聚氧乙烯(PEO)和聚乳酸(PLA)的结晶温度(TC)和熔融温度(Tm)，用溶液共混方法制备了不同组成的PLA/PEO共混物薄膜，并对其进行了差示扫描量热(DSC)、广角X射线衍射(WAXD)及偏光显微镜(POM)分析。结果表明：共混物中薄膜PLA的结晶温度和熔融温度随PEO在共混物中含量的增加而减小；而熔融温度降低的幅度较小，但是都比PLA均聚物的熔融温度低；PLA在共混物薄膜中的结晶形态与PLA均聚物一致，但结晶尺寸相差很大。
The crystalline temperature and melt temperature of PEO were measured by DSC. PLA/PEO blend thin films of different composition were synthesized by solution blending, and the thin films were tested by Differential Scanning Calorimetry (DSC), Wide-Angle X-ray Diffraction (WAXD) and Po-larized Optical Microscope (POM). The results demonstrate that the crystalline temperature and the melting temperature of PLA decrease when the content of PEO in blend materials increases. The range of the decrease of the melting temperature is smaller. Its melting temperature is lower than the melting temperature of PLA homopolymer. Crystalline morphology in blends is consistent with PLA homopolymer, but the crystal size is difference.