左旋聚乳酸等温结晶动力学的超快扫描量热研究  

Study on Isothermal Crystallization and Kinetics of Polymer PLLA by Fast Scanning Calorimetry

作　　者：冯晓雯 胡灵芝 张文 张丽 卫来 Feng Xiaowen;Hu Lingzhi;Zhang Wen;Zhang Li;Wei Lai(Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters,College of Physical Science and Technology,Yili Normal University,Yining,Xinjiang 835000,China)

机构地区：[1]伊犁师范大学物理科学与技术学院,新疆凝聚态相变与微结构实验室,新疆伊宁835000

出　　处：《伊犁师范大学学报（自然科学版）》2022年第1期39-43,共5页Journal of Yili Normal University：Natural Science Edition

基　　金：国家级大学生创新创业训练计划项目(202110764003).

摘　　要：利用超快扫描量热仪(FSC)对左旋聚乳酸(PLLA)的等温结晶及其动力学进行探究.结果表明,随着等温温度的升高或者等温时间的延长,等温结晶所形成的PLLA晶体会逐渐向更加稳定的趋势发展.等温结晶的过程中,PLLA中的晶型由不稳定的α'相逐步转变为稳定的α相.The isothermal crystallization and kinetics of PLLA were investigated by Fast scanning calorimetry(FSC).The results show that as the isothermal temperature increases or the isothermal time extends,the PLLA crystals formed by isothermal crystallization will gradually develop towards a more stable trend.In the process of isothermal crystallization,the crystal morphology in PLLA gradually changes from unstableα'phase to stableαphase.

关 键 词：超快扫描量热 高分子等温结晶动力学 左旋聚乳酸 

分 类 号：O469[理学—凝聚态物理]