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Tensile Deformation of Polybutene-1 with Stable Form I at Elevated Temperature
Wang, YT; Jiang, ZY; 吴忠华;Wu, ZH; Men, YF
2013
发表期刊MACROMOLECULES
卷号46期号:2页码:518-522
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.
学科领域Polymer Science
DOI10.1021/ma302389j
收录类别SCI
WOS记录号WOS:000314081800021
引用统计
被引频次:38[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224005
专题多学科研究中心
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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.
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