Favorable formation of stereocomplex crystals in poly(L-lactide)/poly(D-lactide) blends by selective nucleation

	Favorable formation of stereocomplex crystals in poly(L-lactide)/poly(D-lactide) blends by selective nucleation
	Xiong, Zujiang 1,2; Zhang, Xiuqin 1; Wang, Rui 1; de Vos, Sicco 3; Wang, Ruyin 4; Joziasse, Cornelis A. P.3; Wang, Dujin 2
刊名	POLYMER
	2015-10-12
卷号	76 页码:98-104
关键词	Stereocomplex crystals Supramolecular structure Nucleating agent
英文摘要	An aryl amide derivative (TMB-5) was used to nucleate the poly(L-lactide)/poly(D-lactide) (PLLA/PDLA) blend for the first time. The effect of TMB-5 nucleating agent on the crystallization behavior of PLLA/PDLA blend was systematically investigated. The selective nucleation of stereocomplex (sc) crystals by incorporation of TMB-5 was realized under appropriate crystallization conditions. During the cooling process, various morphology of TMB-5 due to its partial or complete dissolution in the PLLA/PDLA blend melt was observed. Furthermore, an sc crystals layer on the lateral surface of TMB-5 was found. Upon cooling a PLLA/PDLA blend from 260 degrees C at rates between 2 and 100 degrees C/min, 0.5 wt%, addition of TMB-5 induced a single melting peak of sc crystals and no homocrystallization was observed in the subsequent DSC heating scan. The melting temperature of the sc crystals was found to decrease in the presence of TMB-5 from 230 to ca. 200 degrees C, which is still 20 degrees C higher than that of PLEA homopolymer. The results suggest that the supramolecular structure of the nucleating agent plays an important role in the crystallization of the PLLA/PDLA blend. The difference in solubility and recrystallization ability of TMB-5 in polymer melt results in the variation of crystallization behavior of PLLA/PDLA blend, which is correlated with the concentration of TMB-5 and crystallization conditions including the final melting temperature, annealing time and cooling rate. (C) 2015 Elsevier Ltd. All rights reserved.
收录类别	SCI
语种	英语
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/29138]
专题	化学研究所_工程塑料实验室
作者单位	1.Beijing Inst Fash Technol, Sch Mat Sci & Engn, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China 3.Corb Purac, NL-4206 AC Gorinchem, Netherlands 4.Corb Purac China, Shanghai 201199, Peoples R China
推荐引用方式 GB/T 7714	Xiong, Zujiang,Zhang, Xiuqin,Wang, Rui,et al. Favorable formation of stereocomplex crystals in poly(L-lactide)/poly(D-lactide) blends by selective nucleation[J]. POLYMER,2015,76:98-104.
APA	Xiong, Zujiang.,Zhang, Xiuqin.,Wang, Rui.,de Vos, Sicco.,Wang, Ruyin.,...&Wang, Dujin.(2015).Favorable formation of stereocomplex crystals in poly(L-lactide)/poly(D-lactide) blends by selective nucleation.POLYMER,76,98-104.
MLA	Xiong, Zujiang,et al."Favorable formation of stereocomplex crystals in poly(L-lactide)/poly(D-lactide) blends by selective nucleation".POLYMER 76(2015):98-104.