ICCAS OpenIR
Evolutions of Morphology and Crystalline Ordering Upon Annealing of Quenched Isotactic Polypropylene
Zhao, Junchai1,2; Qiu, Jie1,3; Niu, Yanhua1; Wang, Zhigang1
2009-09-01
Source PublicationJOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
ISSN0887-6266
Volume47Issue:17Pages:1703-1712
AbstractQuenched 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
KeywordIsotactic Polypropylene Morphology Transitions
DOI10.1002/polb.21773
Indexed BySCI
Language英语
WOS IDWOS:000269090600007
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66190
Collection中国科学院化学研究所
Corresponding AuthorWang, Zhigang
Affiliation1.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
Recommended Citation
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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