Tensile Deformation of Polybutene-1 with Stable Form I at Elevated Temperature

	Tensile Deformation of Polybutene-1 with Stable Form I at Elevated Temperature
	Wang, YT; Jiang, ZY; 吴忠华;Wu, ZH; Men, YF
刊名	MACROMOLECULES
	2013
卷号	46 期号:2 页码:518-522
英文摘要	Stretching-induced structural changes in polybutene-1 with stable crystalline modification of form I at elevated temperature was investigated by means of the in-situ synchrotron wide-angle X-ray diffraction technique. It was found that oriented metastable form II crystallites with the polymer chain aligned along the stretching direction gradually appear during tensile deformation. Based on the fact that a solid state I to II phase transition cannot take place due to the restriction in chain conformations and lattice dimensions in both phases, the observed occurrence of transition from form I to form II must proceed via a two-step process. First, those form I crystallites with their polymer chain direction tilted with respect to the stretching direction undergo a stress-induced melting process because they experience larger shear stress than the rest. Second, the freed polymer chain segments which have lost their conformational memory in stable form I recrystallize into metastable form II crystallites with their chain direction preferentially aligned along the stretching direction. This result is considered to provide a direct evidence for the stress-induced melting-recrystallization mechanism during tensile deformation of semicrystalline polymers.
学科主题	Polymer Science
收录类别	SCI
WOS记录号	WOS:000314081800021
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224005]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Wang, YT,Jiang, ZY,吴忠华；Wu, ZH,et al. Tensile Deformation of Polybutene-1 with Stable Form I at Elevated Temperature[J]. MACROMOLECULES,2013,46(2):518-522.
APA	Wang, YT,Jiang, ZY,吴忠华；Wu, ZH,&Men, YF.(2013).Tensile Deformation of Polybutene-1 with Stable Form I at Elevated Temperature.MACROMOLECULES,46(2),518-522.
MLA	Wang, YT,et al."Tensile Deformation of Polybutene-1 with Stable Form I at Elevated Temperature".MACROMOLECULES 46.2(2013):518-522.