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	Effects of spinodal decomposition on mechanical properties of a polyolefin blend from high to low strain rates
	Yang, Liang1,2; Niu, Yanhua1; Wang, Howard3; Wang, Zhigang1
刊名	Polymer
	2009-06-19
卷号	50期号:13页码:2990-2998
关键词	Polyethylene blends Strain rate Tensile properties
ISSN号	0032-3861
DOI	10.1016/j.polymer.2009.04.031
通讯作者	Niu, yanhua(yhniu@iccas.ac.cn)
英文摘要	The effects of spinodal decomposition, a typical type of liquid-liquid phase separation (llps), on the mechanical properties of a pretreated statistical copolymer blend of poly(ethylene-co-hexene) (peh) and poly(ethylene-co-butene) (peb) were characterized by tensile testing under different strain rates. an important finding was that the strain rate and the crystallization temperature had to be considered as independent variables in analyzing the effects of spinodal decomposition on the tensile behaviors. at the high strain rate, the stress-strain curves kept irrespective of llps time, in which the interfacial relaxation between phase domains could not be detected, except the case crystallizing at 120 degrees c for 10 min. this was explained in terms of the distribution of the crystals elaborated by differential scanning calorimetry (dsc) results. however, when a relatively low strain rate was employed, a clear deterioration of tensile properties with llps proceeding was observed for the cases with low crystallization temperature because of its detection ability for large scale structural information, such as the phase boundary; unexpectedly, the effect of llps on the tensile properties was found to disappear in the high crystallization temperature cases which was due to the cooperative functions of the phase boundary and the internal structures of the phase domains. these abundant results provided a novel and indispensable instruction for the processing of polymer blends from the theoretical viewpoint. (c) 2009 elsevier ltd. all rights reserved.
WOS关键词	INDUCED PHASE-SEPARATION ; BINARY POLYMER MIXTURES ; MORPHOLOGY CONTROL ; CRYSTALLIZATION ; POLYPROPYLENE ; BEHAVIOR ; COPOLYMER ; DIAGRAM ; POLYETHYLENES ; INTERPLAY
WOS研究方向	Polymer Science
WOS类目	Polymer Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000267415600032
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2399639
专题	中国科学院大学
通讯作者	Niu, Yanhua
作者单位	1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Engn Plast, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.SUNY Binghamton, Dept Mech Engn, Binghamton, NY 13902 USA
推荐引用方式 GB/T 7714	Yang, Liang,Niu, Yanhua,Wang, Howard,et al. Effects of spinodal decomposition on mechanical properties of a polyolefin blend from high to low strain rates[J]. Polymer,2009,50(13):2990-2998.
APA	Yang, Liang,Niu, Yanhua,Wang, Howard,&Wang, Zhigang.(2009).Effects of spinodal decomposition on mechanical properties of a polyolefin blend from high to low strain rates.Polymer,50(13),2990-2998.
MLA	Yang, Liang,et al."Effects of spinodal decomposition on mechanical properties of a polyolefin blend from high to low strain rates".Polymer 50.13(2009):2990-2998.

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