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	Evolutions of morphology and crystalline ordering upon annealing of quenched isotactic polypropylene
	Zhao, Junchai1,2; Qiu, Jie1,3; Niu, Yanhua1; Wang, Zhigang1
刊名	Journal of polymer science part b-polymer physics
	2009-09-01
卷号	47期号:17页码:1703-1712
关键词	Isotactic polypropylene Morphology Transitions
ISSN号	0887-6266
DOI	10.1002/polb.21773
通讯作者	Wang, zhigang(zgwang@iccas.ac.cn)
英文摘要	Quenched mesomorphic isotactic polypropylene precursor material has been investigated as well as the material annealed at different temperatures. at room temperature, morphology and crystalline ordering of the materials have been studied by atomic force microscopy (afm) and wide-angle x-ray diffraction (ward). the nodular morphology of the mesomorphic precursor remains constant for annealing temperatures t(a) below 120 degrees c. needle-like or leaf-like crystals form when t(a) approaches the melting temperature of the precursor. ward data analyzed by peak-fitting indicate that the crystalline ordering along both the chain axis and the lateral directions quickly develops during the mesomorphic-to-monoclinic transition, but slowly after the transition (t(a) > 140 degrees c). combining the afm and ward results it is proposed that two decoupled structure evolution mechanisms are occurring. during the transition, only the crystalline ordering is increasing, but not the size of the nodules. after the transition, the geometry of the nodules changes considerably, whereas there is little additional increase of crystalline ordering. (c) 2009 wiley periodicals, inc. j polym sci part b: polym phys 47: 1703-1712, 2009
WOS关键词	ATOMIC-FORCE MICROSCOPY ; HIGH COOLING RATE ; POLYMER CRYSTALLIZATION ; MESOMORPHIC PHASE ; GAMMA-PHASE ; X-RAY ; TRANSITION ; DEFORMATION ; TIME ; TEMPERATURE
WOS研究方向	Polymer Science
WOS类目	Polymer Science
语种	英语
出版者	JOHN WILEY & SONS INC
WOS记录号	WOS:000269090600007
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2395185
专题	中国科学院大学
通讯作者	Wang, Zhigang
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.Shijiazhuang Railway Inst, Sch Mat Sci & Engn, Shijiazhuang 050043, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Junchai,Qiu, Jie,Niu, Yanhua,et al. Evolutions of morphology and crystalline ordering upon annealing of quenched isotactic polypropylene[J]. Journal of polymer science part b-polymer physics,2009,47(17):1703-1712.
APA	Zhao, Junchai,Qiu, Jie,Niu, Yanhua,&Wang, Zhigang.(2009).Evolutions of morphology and crystalline ordering upon annealing of quenched isotactic polypropylene.Journal of polymer science part b-polymer physics,47(17),1703-1712.
MLA	Zhao, Junchai,et al."Evolutions of morphology and crystalline ordering upon annealing of quenched isotactic polypropylene".Journal of polymer science part b-polymer physics 47.17(2009):1703-1712.

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