The inexistence of epitaxial relationship between stereocomplex and alpha crystal of poly(lactic acid): Direct experimental evidence

doi:10.1016/j.polymer.2013.02.010

CORC > 化学研究所 > 中国科学院化学研究所

	The inexistence of epitaxial relationship between stereocomplex and alpha crystal of poly(lactic acid): Direct experimental evidence
	Wen, Tao 1; Xiong, Zujiang 1; Liu, Guoming 1; Zhang, Xiuqin 2; de Vos, Sicco 3; Wang, Ryan 4; Joziasse, Cornelis A. P.3; Wang, Fosong 1; Wang, Dujin 1
刊名	POLYMER
	2013-03-22
卷号	54 期号:7 页码:1923-1929
关键词	Poly(Lactic Acid) Surface-induced Crystallization Stereocomplex
ISSN号	0032-3861
DOI	10.1016/j.polymer.2013.02.010
英文摘要	In order to obtain a clear understanding to the interplay between the homogeneous crystal (alpha form) of PLA and its stereocomplex (SC) crystal, the crystalline behavior of PLA homopolymer under the surface drive force of SC and homopolymer fibers has been investigated in the present work. It was found that the nucleating density of the transcrystallization layer along the SC fiber was much lower than that along the homopolymer ones. Such morphologic difference between transcrystallization induced by SC and homopolymer fibers became more pronounced at higher crystallization temperature. The crystallization induction period (t(i)) of PLLA onto SC fiber was five times longer than that along homopolymer ones at 160 degrees C. However, if the blend fiber was predominantly containing alpha crystal, it could exhibit high nucleating capability as well as the homopolymer fibers. The results of TEM selected area electron diffraction (SAED) also revealed that the organization and orientation of alpha crystal were independent with the presence of SC substrate. Our results clearly indicated that there is no epitaxial relationship between PLA SC and alpha crystal. (c) 2013 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000316303400027
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/54377]
专题	中国科学院化学研究所
通讯作者	Wang, Dujin
作者单位	1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China 2.Beijing Inst Fash Technol, Beijing Key Lab Clothing Mat R&D & Assessment, Sch Mat Sci & Engn, Beijing 100029, Peoples R China 3.Purac Biochem BV, NL-4200 AA Gorinchem, Netherlands 4.Purac China, Shanghai 201108, Peoples R China
推荐引用方式 GB/T 7714	Wen, Tao,Xiong, Zujiang,Liu, Guoming,et al. The inexistence of epitaxial relationship between stereocomplex and alpha crystal of poly(lactic acid): Direct experimental evidence[J]. POLYMER,2013,54(7):1923-1929.
APA	Wen, Tao.,Xiong, Zujiang.,Liu, Guoming.,Zhang, Xiuqin.,de Vos, Sicco.,...&Wang, Dujin.(2013).The inexistence of epitaxial relationship between stereocomplex and alpha crystal of poly(lactic acid): Direct experimental evidence.POLYMER,54(7),1923-1929.
MLA	Wen, Tao,et al."The inexistence of epitaxial relationship between stereocomplex and alpha crystal of poly(lactic acid): Direct experimental evidence".POLYMER 54.7(2013):1923-1929.