Cavitation in lsotactic Polypropylene at Large Strains during Tensile Deformation at Elevated Temperatures

	Cavitation in lsotactic Polypropylene at Large Strains during Tensile Deformation at Elevated Temperatures
	Lu,Ying; Wang,Yaotao; Chen,Ran; Zhao,Jiayi; Jiang,Zhiyong; Men,Yongfeng
刊名	macromolecules
	2015
卷号	48 期号:16 页码:5799-5806
关键词	X-RAY-SCATTERING HIGH-DENSITY POLYETHYLENE PLASTIC-DEFORMATION SEMICRYSTALLINE POLYMERS ISOTACTIC POLYPROPYLENE SMALL-ANGLE LINEAR POLYETHYLENE NEUTRON-SCATTERING CRYSTALLIZATION EVOLUTION
通讯作者	men,yf
英文摘要	wo quenched isotactic polypropylene samples with different molecular weight were used to explore the sudden stress whitening activated at large strains during stretching at elevated temperatures via the ultrasmall-angle xray scattering technique. this kind of whitening was confirmed to be caused by the creation of cavities within the highly oriented samples. the critical strain for initiating the stress whitening increases with the increase of stretching temperature and molecular weight whereas the critical stress for the stress whitening depends only on molecular weight irrespective of stretching temperature. thus, this peculiar stress whitening behavior under large strain deformation can be understood as a consequence of disentanglement of the highly oriented amorphous network initiated by the breaking of interfibrillar tie chains. during large strain deformation, two independent processes can occur. besides the disentanglement induced cavitation, the stacked lamellar structure within microfibrils can be destroyed in the high molecular weight sample. in such case, the critical stress for lamellae destruction is lower than that of breaking of interfibrillar tie chains.
收录类别	SCI
语种	英语
WOS记录号	WOS:000360324400042
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/64811]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Lu,Ying,Wang,Yaotao,Chen,Ran,et al. Cavitation in lsotactic Polypropylene at Large Strains during Tensile Deformation at Elevated Temperatures[J]. macromolecules,2015,48(16):5799-5806.
APA	Lu,Ying,Wang,Yaotao,Chen,Ran,Zhao,Jiayi,Jiang,Zhiyong,&Men,Yongfeng.(2015).Cavitation in lsotactic Polypropylene at Large Strains during Tensile Deformation at Elevated Temperatures.macromolecules,48(16),5799-5806.
MLA	Lu,Ying,et al."Cavitation in lsotactic Polypropylene at Large Strains during Tensile Deformation at Elevated Temperatures".macromolecules 48.16(2015):5799-5806.