Tensile Deformation of Oriented Poly(epsilon-caprolactone) and Its Miscible Blends with Poly(vinyl methyl ether)

	Tensile Deformation of Oriented Poly(epsilon-caprolactone) and Its Miscible Blends with Poly(vinyl methyl ether)
	Jiang ZY ; Wang YT ; Fu LL ; Whiteside B ; Wyborn J ; Norris K ; Wu ZH ; Coates P ; Men YF
刊名	macromolecules
	2013
卷号	46 期号:17 页码:6981-6990
关键词	X-RAY-SCATTERING HIGH-DENSITY POLYETHYLENE INJECTION-MOLDED POLYPROPYLENE SMALL-ANGLE LINEAR POLYETHYLENE CRYSTALLINE POLYMERS ISOTACTIC POLYPROPYLENE STRUCTURAL EVOLUTION PLASTIC-DEFORMATION SHISH-KEBAB
ISSN号	1520-5835
通讯作者	jiang zy
中文摘要	the structural evolution of micromolded poly(e-caprolactone) (pcl) and its miscible blends with noncrystallizable poly(vinyl methyl ether) (pvme) at the nanoscale was investigated as a function of deformation ratio and blend composition using in situ synchrotron small-angle x-ray scattering (saxs) and scanning saxs techniques. it was found that the deformation mechanism of the oriented samples shows a general scheme for the process of tensile deformation: crystal block slips within the lamellae occur at small deformations followed by a stress-induced fragmentation and recrystallization process along the drawing direction at a critical strain where the average thickness of the crystalline lamellae remains essentially constant during stretching. the value of the critical strain depends on the amount of the amorphous component incorporated in the blends, which could be traced back to the lower modulus of the entangled amorphous phase and, therefore, the reduced network stress acting on the crystallites upon addition of pvme. when stretching beyond the critical strain the slippage of the fibrils (stacks of newly formed lamellae) past each other takes place resulting in a relaxation of stretched interlamellar amorphous chains. because of deformation-induced introduction of the amorphous pvme into the interfibrillar regions in the highly oriented blends, the interactions between fibrils becomes stronger upon further deformation and thus impeding sliding of the fibrils to some extent leading finally to less contraction of the interlamellar amorphous layers compared to the pure pcl.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000330145900032
公开日期	2014-04-15
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49617]
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	Jiang ZY,Wang YT,Fu LL,et al. Tensile Deformation of Oriented Poly(epsilon-caprolactone) and Its Miscible Blends with Poly(vinyl methyl ether)[J]. macromolecules,2013,46(17):6981-6990.
APA	Jiang ZY.,Wang YT.,Fu LL.,Whiteside B.,Wyborn J.,...&Men YF.(2013).Tensile Deformation of Oriented Poly(epsilon-caprolactone) and Its Miscible Blends with Poly(vinyl methyl ether).macromolecules,46(17),6981-6990.
MLA	Jiang ZY,et al."Tensile Deformation of Oriented Poly(epsilon-caprolactone) and Its Miscible Blends with Poly(vinyl methyl ether)".macromolecules 46.17(2013):6981-6990.