Enhancement of stereocomplex formation in poly(L-lactide)/poly(D-lactide) mixture by shear

	Enhancement of stereocomplex formation in poly(L-lactide)/poly(D-lactide) mixture by shear
	Song, Yan 1; Zhang, Xiuqin 2; Yin, Yongai 1; de Vos, Sicco 3; Wang, Ruyin 4; Joziasse, Cornelis A. P.3; Liu, Guoming 1; Wang, Dujin 1
刊名	POLYMER
	2015-08-18
卷号	72 页码:185-192
关键词	Poly(lactic acid) Stereocomplex Shear-induced crystallization
英文摘要	The non-isothermal crystallization behavior of poly(L-lactide)/poly(D-lactide) (PLLA/PDLA) blends under shear was investigated by in-situ polarized light optical microscopy (POM) and wide angle X-ray scattering (WAXS). Pulse shear for 5 seconds was applied to the melt during cooling. The effects of shear temperature and shear rate were systematically studied. It was found that the shear field could increase the nucleation density of stereocomplex crystal (SC), and accelerate the overall crystallization rate. The final crystallinity of SC increased to as high as similar to 45% with a shear rate of 178 s(-1) when the shear temperature was 150 degrees C. The onset crystallization temperature of alpha crystals increased by similar to 10 degrees C. The final content of alpha crystals reduced with the increase of SC content. Multiple factors influence the crystallization of SC and alpha crystals, including the shear rate, shear temperature and the nucleating/confinement effect of SC on alpha crystals. (C) 2015 Elsevier Ltd. All rights reserved.
收录类别	SCI
语种	英语
公开日期	2015-10-27
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/27722]
专题	化学研究所_工程塑料实验室
作者单位	1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China 2.Beijing Inst Fash Technol, Sch Mat Sci & Engn, Beijing Key Lab Clothing Mat R&D & Assessment, Beijing 100029, Peoples R China 3.Corb Purac, NL-4200AA Gorinchem, Netherlands 4.Corb Purac China, Shanghai 201199, Peoples R China
推荐引用方式 GB/T 7714	Song, Yan,Zhang, Xiuqin,Yin, Yongai,et al. Enhancement of stereocomplex formation in poly(L-lactide)/poly(D-lactide) mixture by shear[J]. POLYMER,2015,72:185-192.
APA	Song, Yan.,Zhang, Xiuqin.,Yin, Yongai.,de Vos, Sicco.,Wang, Ruyin.,...&Wang, Dujin.(2015).Enhancement of stereocomplex formation in poly(L-lactide)/poly(D-lactide) mixture by shear.POLYMER,72,185-192.
MLA	Song, Yan,et al."Enhancement of stereocomplex formation in poly(L-lactide)/poly(D-lactide) mixture by shear".POLYMER 72(2015):185-192.