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Reexamination of shish kebab formation in poly(ethylene oxide) melts
Zhang, LN; Shi, WC; 程贺;Cheng, H; Han, CC
刊名POLYMER
2014
卷号55期号:12页码:2890-2899
关键词Oriented network Shear induced crystallization Two-step shear
学科分类Polymer Science
DOI10.1016/j.polymer.2014.04.047
英文摘要Although recent experiments concerning shear effects on crystallization in polymer melts are inclined to support the oriented network model, two important questions still remain open: the effect of polydispersity on shish formation and the growth mechanism of shish. In this work, a narrowdisperse poly(ethylene oxide) (PEO) is chosen as a model system to clarify the role of polydispersity for shish kebab formation after a pulse of flow. The intact structure of shish kebab observed via scanning electron microscopy (SEM), with a 150 nm wide shish core and perpendicular epitaxially grown kebabs with a long period of about 35 nm, reveals that polydispersity is not a necessary condition for shish kebab formation. On the other hand, two-step shear experiment is utilized to elucidate the growth mechanism of shish. It has been proved in a latest study that shish growth is related to the size of the growing nuclei (interval time) and second step shear rate. In this manuscript, a third factor, shear time in the second step shear, is found to be an effective factor to promote the growth of shish, which might provide a convenient processing method. (C) 2014 Elsevier Ltd. All rights reserved.
收录类别SCI
WOS记录号WOS:000337333100016
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被引频次:7[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/311005/225312
专题东莞分部_期刊论文
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GB/T 7714
Zhang, LN,Shi, WC,程贺;Cheng, H,et al. Reexamination of shish kebab formation in poly(ethylene oxide) melts[J]. POLYMER,2014,55(12):2890-2899.
APA Zhang, LN,Shi, WC,程贺;Cheng, H,&Han, CC.(2014).Reexamination of shish kebab formation in poly(ethylene oxide) melts.POLYMER,55(12),2890-2899.
MLA Zhang, LN,et al."Reexamination of shish kebab formation in poly(ethylene oxide) melts".POLYMER 55.12(2014):2890-2899.
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