Crystal structure and morphology influenced by shear effect of poly(L-lactide) and its melting behavior revealed by WAXD, DSC and in-situ POM

doi:10.1016/j.polymer.2011.05.044

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	Crystal structure and morphology influenced by shear effect of poly(L-lactide) and its melting behavior revealed by WAXD, DSC and in-situ POM
	Huang, Shaoyong 2,3; Li, Hongfei 3; Jiang, Shichun 1; Chen, Xuesi 2; An, Lijia 3
刊名	POLYMER
	2011-07-07
卷号	52 期号:15 页码:3478-3487
关键词	Poly(L-lactide) Shear Crystal Structure And Cylindric Morphology
ISSN号	0032-3861
DOI	10.1016/j.polymer.2011.05.044
英文摘要	Shear effect on crystal structure, morphology and melting behavior of poly(L-lactide) (PLLA) were investigated by wide-angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC) and in-situ polarized optical microscope (POM). Influences of steady shear on PLLA melt was investigated during annealing. The impacts of crystallization temperature (T-c) and shear rate (SR) on crystal structure, crystal growth rate, nucleation, and melting behavior were studied. It could be clarified into the low (<20 s(-1)) and high shear rate ranges in terms of the crystal structure, growth rate, nucleation and melting behavior. It was found that phase transition and recrystallization during heating completely changed the stack structure. A new stable structure was established after a temperature jump in the melting range. Cylindric morphology arranged with spherulite was also observed in the polymer films at high T-c influenced by shear effect. (C) 2011 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000292533300029
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/73833]
专题	中国科学院化学研究所
通讯作者	Jiang, Shichun
作者单位	1.Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Polymer Ecomat, Changchun 130022, Peoples R China 3.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Huang, Shaoyong,Li, Hongfei,Jiang, Shichun,et al. Crystal structure and morphology influenced by shear effect of poly(L-lactide) and its melting behavior revealed by WAXD, DSC and in-situ POM[J]. POLYMER,2011,52(15):3478-3487.
APA	Huang, Shaoyong,Li, Hongfei,Jiang, Shichun,Chen, Xuesi,&An, Lijia.(2011).Crystal structure and morphology influenced by shear effect of poly(L-lactide) and its melting behavior revealed by WAXD, DSC and in-situ POM.POLYMER,52(15),3478-3487.
MLA	Huang, Shaoyong,et al."Crystal structure and morphology influenced by shear effect of poly(L-lactide) and its melting behavior revealed by WAXD, DSC and in-situ POM".POLYMER 52.15(2011):3478-3487.