ICCAS OpenIR
Characterization of the sequence distribution and crystalline structure of poly(ethylene-co-vinyl acetate) copolymers with high-resolution NMR spectroscopy
Su, ZQ; Zhao, Y; Xu, YZ; Zhang, XQ; Zhu, SN; Wang, DJ; Wu, J; Han, CC; Xu, DF
2004-05-13
Source PublicationPOLYMER
ISSN0032-3861
Volume45Issue:11Pages:3693-3700
AbstractThe sequence distribution and crystalline structure of a series of poly(ethylene-co-vinyl acetate) (EVA) copolymers with different VA contents were investigated with hi.-h-resolution nuclear magnetic resonance spectroscopy (NMR). It was found that most of the VA segments are isolated in the main chain. though three kinds of sequence distributions (VA-VA head to tail, VA-E-VA head to tail, and VA-E-E-VA head to tail) exist in the EVA copolymers with higher VA content. Furthermore, two kinds of alkyl-branching signals were detected in the high temperature C-13 NMR spectra of EVA copolymers. Solid-state C-13 NMR spectroscopic investigation indicated that only orthorhombic phase exists in the crystalline region of the EVA copolymers with lower VA content. For the EVA copolymers with higher VA content, however. besides the occurrence of orthorhombic crystalline phase, monoclinic phase was also detected. As a metastable state, monoclinic phase is mainly affected by VA content as well as the thermal treating history. (C) 2004 Elsevier Ltd. All rights reserved.
KeywordEva Copolymers Sequence Distribution Polymorphism
DOI10.1016/j.polymer.2004.03.065
Indexed BySCI
Language英语
WOS IDWOS:000221486300014
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/82014
Collection中国科学院化学研究所
Corresponding AuthorWang, DJ
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Joint Lab Polymer Sci & Mat,State Key Lab Polymer, Beijing 100080, Peoples R China
2.Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Su, ZQ,Zhao, Y,Xu, YZ,et al. Characterization of the sequence distribution and crystalline structure of poly(ethylene-co-vinyl acetate) copolymers with high-resolution NMR spectroscopy[J]. POLYMER,2004,45(11):3693-3700.
APA Su, ZQ.,Zhao, Y.,Xu, YZ.,Zhang, XQ.,Zhu, SN.,...&Xu, DF.(2004).Characterization of the sequence distribution and crystalline structure of poly(ethylene-co-vinyl acetate) copolymers with high-resolution NMR spectroscopy.POLYMER,45(11),3693-3700.
MLA Su, ZQ,et al."Characterization of the sequence distribution and crystalline structure of poly(ethylene-co-vinyl acetate) copolymers with high-resolution NMR spectroscopy".POLYMER 45.11(2004):3693-3700.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Su, ZQ]'s Articles
[Zhao, Y]'s Articles
[Xu, YZ]'s Articles
Baidu academic
Similar articles in Baidu academic
[Su, ZQ]'s Articles
[Zhao, Y]'s Articles
[Xu, YZ]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Su, ZQ]'s Articles
[Zhao, Y]'s Articles
[Xu, YZ]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.