ICCAS OpenIR
Crystallization behavior of syndiotactic and atactic 1,2-polybutadiene blends
Cai, JL; Han, Y; Yuan, ZR; Cheng, RS; Wang, ZL; Jiang, LS; Bi, JF; Li, GX
2004-08-01
Source PublicationPOLYMER INTERNATIONAL
ISSN0959-8103
Volume53Issue:8Pages:1127-1137
AbstractTwo 1,2-polybutadiene samples, ie syndiotactic 1,2-polybutadiene (sPB) and atactic 1,2-polybutadiene (aPB), were synthesized by using the same Iron (III) catalyst system, although with changing 14 contents of the third catalyst component. Effects of the composition of aPB on the crystallization behavior of sPB have been characterized by wide-angle X-ray diffraction (WAXD) and differential scanning calorimetry (DSC). Analysis of the results indicates that the intensity of the (010) peak of sPB is influenced much more easily than that of the (200)/(110) peak by the amorphous aPB sample, but the structure of sPB does not change with the changing composition of sPB. aPB is thermodynamically miscible with sPB in the melt, and retards the melt crystallization of sPB. At the same time, non-isothermal crystallization kinetic studies of neat sPB and 1/2.5 blends were carried out by DSC. The Avrami equations modified by Jeziorny and Privalko, were used to fit the primary stage of the non-isothermal crystallizations of neat sPB and the 1/2.5 blends. A larger Avrami exponent for neat sPB than for the blends was observed, and possible reasons are discussed. The activation energies (DeltaE) were determined to be -88 and -106 kJ mol(-1) by the isoconversional Friedman method for neat sPB and sPB in the blends, respectively. (C) 2004 Society of Chemical Industry.
KeywordNon-isothermal Crystallization Blends Syndiotactic 1 2-polybutadiene
DOI10.1002/pi.1512
Indexed BySCI
Language英语
WOS IDWOS:000222857200018
PublisherJOHN WILEY & SONS LTD
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/55376
Collection中国科学院化学研究所
Corresponding AuthorCai, JL
Affiliation1.Nanjing Univ, Dept Biochem, Minist Educ, Nanjing 210093, Peoples R China
2.Nanjing Univ, Natl Lab Pharmaceut Biotechnol, Key Lab Mesoscop Mat Sci, Minist Educ, Nanjing 210093, Peoples R China
3.Nanjing Univ, Modern Anal Ctr, Nanjing 210093, Peoples R China
4.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Cai, JL,Han, Y,Yuan, ZR,et al. Crystallization behavior of syndiotactic and atactic 1,2-polybutadiene blends[J]. POLYMER INTERNATIONAL,2004,53(8):1127-1137.
APA Cai, JL.,Han, Y.,Yuan, ZR.,Cheng, RS.,Wang, ZL.,...&Li, GX.(2004).Crystallization behavior of syndiotactic and atactic 1,2-polybutadiene blends.POLYMER INTERNATIONAL,53(8),1127-1137.
MLA Cai, JL,et al."Crystallization behavior of syndiotactic and atactic 1,2-polybutadiene blends".POLYMER INTERNATIONAL 53.8(2004):1127-1137.
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