ICCAS OpenIR
Fluctuation-Assisted Crystallization of an iPP/PEOc Polymer Alloy Prepared on a Single Multicatalyst Reactor Granule
Du, Jiang; Zhang, Xiaohua; Han, Charles C.
2009-01-15
Source PublicationJOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
ISSN0887-6266
Volume47Issue:2Pages:166-172
AbstractThe new fluctuation-assisted mechanism for nucleation and crystallization in the isotactic polypropylene/poly(ethylene-co-octene) alloy has been studied. We found that the liquid-liquid phase separation (LLPS) had a dominant, influence on the crystallization kinetics through the nucleation process. After LLPS, the nucleation of crystallization mainly occurred at the interface of the phase-separated domains. It is because that the concentration fluctuations of the LLPS induced the motion of polymer chains and possibly some segmental alignment and/or orientation in the concentration gradient regions through interdiffusion, which could assist the formation of nuclei for crystallization. In other words, the usual nucleation energy barrier could be overcome (or at least partially) by the concentration fluctuation growth of LLPS in the unstable regions. This could be viewed as a new kind of heterogeneous nucleation and could be an addition to the regular nucleation and growth mechanism for crystallization. (C) 2008 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 47: 166-172, 2009
KeywordConcentration Fluctuation Crystallization Nucleation Phase Separation Polyolefin Alloy
DOI10.1002/polb.21627
Indexed BySCI
Language英语
WOS IDWOS:000262330300005
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65860
Collection中国科学院化学研究所
Corresponding AuthorHan, Charles C.
AffiliationChinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Du, Jiang,Zhang, Xiaohua,Han, Charles C.. Fluctuation-Assisted Crystallization of an iPP/PEOc Polymer Alloy Prepared on a Single Multicatalyst Reactor Granule[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2009,47(2):166-172.
APA Du, Jiang,Zhang, Xiaohua,&Han, Charles C..(2009).Fluctuation-Assisted Crystallization of an iPP/PEOc Polymer Alloy Prepared on a Single Multicatalyst Reactor Granule.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,47(2),166-172.
MLA Du, Jiang,et al."Fluctuation-Assisted Crystallization of an iPP/PEOc Polymer Alloy Prepared on a Single Multicatalyst Reactor Granule".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 47.2(2009):166-172.
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