ICCAS OpenIR
Improved thermal fractionation technique for chain structure analysis of ethylene/alpha-olefin copolymers
Zhang, FJ; Fu, Q; Lu, TJ; Huang, HY; He, TB
2002-02-01
Source PublicationPOLYMER
ISSN0032-3861
Volume43Issue:3Pages:1031-1034
AbstractIn this report, we describe an improved thermal fractionation technique used to characterize the polydispersity of crystalline ethylene sequence length (CESL) of ethylene/alpha -olefin copolymers. After stepwise isothermal crystallization, the crystalline ethylene sequences are sorted into groups by their lengths. The CESLs are estimated using melting points of known hydrocarbons. The content of each group is determined using the calibrated peak area. The statistical terms: the arithmetic mean (L) over bar (n), the weighted mean (L) over bar (w) and the broadness index I = (L) over bar (w)/(L) over bar (n) are used to describe the distribution of CESL. Results show that improved thermal fractionation technique can quantitatively characterize the polydispersity of CESL with a high degree of accuracy. (C) 2001 Elsevier Science Ltd. All fights reserved.
KeywordThermal Fractionation Technique Ethylene/alpha-olefin Copolymer Crystalline Ethylene Sequence Length
Indexed BySCI
Language英语
WOS IDWOS:000172607500047
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78876
Collection中国科学院化学研究所
Corresponding AuthorHe, TB
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China
2.Sichuan Univ, Dept Polymer Sci & Mat, Chengdu 610065, Peoples R China
3.Liaoning Univ, Coll Chem Sci & Engn, Liaoning 110036, Peoples R China
Recommended Citation
GB/T 7714
Zhang, FJ,Fu, Q,Lu, TJ,et al. Improved thermal fractionation technique for chain structure analysis of ethylene/alpha-olefin copolymers[J]. POLYMER,2002,43(3):1031-1034.
APA Zhang, FJ,Fu, Q,Lu, TJ,Huang, HY,&He, TB.(2002).Improved thermal fractionation technique for chain structure analysis of ethylene/alpha-olefin copolymers.POLYMER,43(3),1031-1034.
MLA Zhang, FJ,et al."Improved thermal fractionation technique for chain structure analysis of ethylene/alpha-olefin copolymers".POLYMER 43.3(2002):1031-1034.
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