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	Crystallization temperature dependence of cavitation and plastic flow in the tensile deformation of poly(epsilon-caprolactone)
	Jiang, Zhiyong1; Chen, Ran1; Lu, Ying1; Whiteside, Ben2; Coates, Phil2; Wu, Zhonghua3; Men, Yongfeng1
刊名	Journal of physical chemistry b
	2017-07-13
卷号	121期号:27页码:6673-6684
ISSN号	1520-6106
DOI	10.1021/acs.jpcb.7b02595
通讯作者	Jiang, zhiyong(jiangzhy@ciac.ac.cn) ; Men, yongfeng(men@ciac.ac.cn)
英文摘要	In situ small-, ultrasmall-, and wide-angle x-ray scattering measurements were performed to investigate the structural evolution of crystalline lamellae and cavities as a function of deformation ratio during tensile deformation of isothermally crystallized poly(epsilon-caprolactone). the cavities were modeled as cylinder-shaped objects which are oriented along the stretching direction and randomly distributed in the samples, and their dimensions were evaluated by direct model fitting of scattering patterns. at small deformations, the orientation of these cavities at the onset of cavity formation was related to the isothermal crystallization temperature. upon further stretching; the cavities were found to cluster in the interfibrillar regions at moderate strains where the long spacing of the newly developed lamellae along the stretching direction remained essentially constant. at large orientations, the cooperative deformational behavior mediated via slippage of fibrils was evidenced, the extent of which depended on the cavity number, which could be traced back to the significantly different coupling forces imposed by chains connecting adjacent fibrils. furthermore, wide-angle x-ray scattering results revealed that a fraction of the polymer chains with their orientation perpendicular to the stretching direction were still preserved even at large macroscopic strains.
WOS关键词	X-RAY-SCATTERING ; HIGH-DENSITY POLYETHYLENE ; SEMICRYSTALLINE POLYMERS ; ISOTACTIC POLYPROPYLENE ; LINEAR POLYETHYLENE ; STRUCTURAL EVOLUTION ; CHAIN ENTANGLEMENTS ; MECHANISMS ; TIME ; IDENTIFICATION
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000405764000025
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2177262
专题	高能物理研究所
通讯作者	Jiang, Zhiyong; Men, Yongfeng
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Renmin St 5625, Beijing 130022, Peoples R China 2.Univ Bradford, Fac Engn & Informat, Bradford BD7 1DP, W Yorkshire, England 3.Chinese Acad Sci, Inst High Energy Phys, BSRF, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Zhiyong,Chen, Ran,Lu, Ying,et al. Crystallization temperature dependence of cavitation and plastic flow in the tensile deformation of poly(epsilon-caprolactone)[J]. Journal of physical chemistry b,2017,121(27):6673-6684.
APA	Jiang, Zhiyong.,Chen, Ran.,Lu, Ying.,Whiteside, Ben.,Coates, Phil.,...&Men, Yongfeng.(2017).Crystallization temperature dependence of cavitation and plastic flow in the tensile deformation of poly(epsilon-caprolactone).Journal of physical chemistry b,121(27),6673-6684.
MLA	Jiang, Zhiyong,et al."Crystallization temperature dependence of cavitation and plastic flow in the tensile deformation of poly(epsilon-caprolactone)".Journal of physical chemistry b 121.27(2017):6673-6684.

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