Conformation orientation of syndiotactic polypropylene induced by deformation at different temperatures

doi:10.1021/jp075995n

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	Conformation orientation of syndiotactic polypropylene induced by deformation at different temperatures
	Zhang, Xiuqin; Kong, Lei; Rottstegge, Joerg; Xu, Duanfu; Wang, Dujin
刊名	JOURNAL OF PHYSICAL CHEMISTRY B
	2007-10-11
卷号	111 期号:40 页码:11642-11645
ISSN号	1520-6106
DOI	10.1021/jp075995n
英文摘要	Two syndiotactic polypropylene (sPP) sample films (S-0 and S-90) with different initial structures were prepared in this paper by isothermal crystallization from the melt at 0 and 90 degrees C, respectively. The polymorphic transitions of the two samples induced by deformation at different temperatures (20, 40, and 60 degrees C) were investigated by rheo-optical FTIR spectroscopy. The results indicated that stretching leads to the transition from the helical to trans-planar conformation and improves the orientation of both helical and trans-planar conformations for the sPP films. With increasing stretching temperature, the conformational transitions for the two sPP samples are all suppressed, and the orientation behavior of the two samples appears completely different. The orientation degree of So decreases with increasing stretching temperature, while that of S-90 increases. These results suggest that the stretching temperature and initial structure have great influence on the conformation transition and orientation behavior of the sPP sample. On the basis of the experimental results, the schematic illustration of the conformation transition and orientation behavior of sPP during stretching has been proposed.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000249986900010
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/60617]
专题	中国科学院化学研究所
通讯作者	Wang, Dujin
作者单位	Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Engn Plastics,Joint Lab Polymer Sci & Mat, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiuqin,Kong, Lei,Rottstegge, Joerg,et al. Conformation orientation of syndiotactic polypropylene induced by deformation at different temperatures[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2007,111(40):11642-11645.
APA	Zhang, Xiuqin,Kong, Lei,Rottstegge, Joerg,Xu, Duanfu,&Wang, Dujin.(2007).Conformation orientation of syndiotactic polypropylene induced by deformation at different temperatures.JOURNAL OF PHYSICAL CHEMISTRY B,111(40),11642-11645.
MLA	Zhang, Xiuqin,et al."Conformation orientation of syndiotactic polypropylene induced by deformation at different temperatures".JOURNAL OF PHYSICAL CHEMISTRY B 111.40(2007):11642-11645.