Polypropylene/polyamide 6/polyethylene-octene elastomer blends. Part 3.   Mechanisms of volume dilatation during plastic deformation under   uniaxial tension

doi:10.1016/j.polymer.2005.03.111

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	Polypropylene/polyamide 6/polyethylene-octene elastomer blends. Part 3. Mechanisms of volume dilatation during plastic deformation under uniaxial tension
	Bai, SL ; G&apos ; Hiver, JM ; Mathieu, C ; Sell, C
刊名	polymer
	2005
关键词	polymer blends volume dilatation electron microscopy ISOTACTIC POLYPROPYLENE PROPERTY RELATIONSHIPS RUBBER FUNCTIONALITY ELECTRON-MICROSCOPY FRACTURE-TOUGHNESS POLYMERS MICROSTRUCTURES MORPHOLOGY
DOI	10.1016/j.polymer.2005.03.111
英文摘要	It has been shown in a previous paper in this series that important dilatation is produced by plastic deformation under tension of neat PP and PP/PA6/POE blends, for which the POE to PA6 concentration ratio equals 1/2. In this work, the detailed mechanisms of this volume change are investigated from electron micrographs (SEM and TEM) obtained in the deformed state. At low alloy content, it is thus observed that dilatation results from decohesion of the PA6 particles from the PP matrix. As the amount of PA6 and POE increases, voids are nucleated preferentially in the thicker POE interphase making a shell around the PA6 particles, and secondarily in isolated POE particles. Unexpectedly, it has been found that the overall volume dilatation decreases with total alloying content. This is interpreted by: (i) the increasing contribution of PA6 that intrinsically deforms with less cavitation than PP, (ii) the post-cavitation rubber-like stretching of POE particles and, (iii) the early formation of a percolating network of shear bands from the diffuse array of voids formed after the yield point. These mechanisms explain the gradual increase of the resistance to impact of the PP/PA6/POE as their alloying content is increased. (c) 2005 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000231104700017&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Polymer Science; SCI(E); EI; 43; ARTICLE; 17; 6437-6446; 46
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/253125]
专题	工学院
推荐引用方式 GB/T 7714	Bai, SL,G&apos,Hiver, JM,et al. Polypropylene/polyamide 6/polyethylene-octene elastomer blends. Part 3. Mechanisms of volume dilatation during plastic deformation under uniaxial tension[J]. polymer,2005.
APA	Bai, SL,G&apos,Hiver, JM,Mathieu, C,&Sell, C.(2005).Polypropylene/polyamide 6/polyethylene-octene elastomer blends. Part 3. Mechanisms of volume dilatation during plastic deformation under uniaxial tension.polymer.
MLA	Bai, SL,et al."Polypropylene/polyamide 6/polyethylene-octene elastomer blends. Part 3. Mechanisms of volume dilatation during plastic deformation under uniaxial tension".polymer (2005).