ICCAS OpenIR
The influence of interlayer cations on the photo-oxidative degradation of polyethylene/montomorillonite composites
Qin, HL; Zhang, ZG; Feng, M; Gong, FL; Zhang, SM; Yang, MS
2004-08-15
Source PublicationJOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
ISSN0887-6266
Volume42Issue:16Pages:3006-3012
AbstractThe photo-oxidative degradation of polyethylene/montmorillonite (PE/MMT) nanocomposite and microcomposite has been investigated. It has been found that the rate of photo-oxidative degradation of PE/MMT nanocomposite and PE/Mn+ MMT (where Mn+ stands for multivalent transition metal cation) microcomposites is much faster than that of pure PE. For the PE/MMT nanocomposite, the acceleration of photo-oxidative degradation is due to the influence of MMT and ammonium ion, in which the influence of ammonium is primary. The decomposition of ammonium ion may create acidic sites on layered silicates; meanwhile, the complex crystallographic structure and habit of clay minerals could also result in some active sites. The reversible photo-redox reaction of transition metal cations has a catalytic effect in the degradation of the polymer matrix. All these catalytic active sites can accept single electrons from donor molecules of polymer matrix and induce the formation of free radical upon UV irradiation. The generation of free radical leads to the oxidization and break of molecular chain. Thus, the materials suffer degradation and their mechanical strength decreases. (C) 2004 Wiley Periodicals, Inc.
KeywordPolyethylene Montmorillonite Nanocomposite Photo-oxidative Degradation
DOI10.1002/polb.20068
Indexed BySCI
Language英语
WOS IDWOS:000223071700007
PublisherJOHN WILEY & SONS INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/81894
Collection中国科学院化学研究所
Corresponding AuthorZhang, SM
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Engn Plast, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Qin, HL,Zhang, ZG,Feng, M,et al. The influence of interlayer cations on the photo-oxidative degradation of polyethylene/montomorillonite composites[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2004,42(16):3006-3012.
APA Qin, HL,Zhang, ZG,Feng, M,Gong, FL,Zhang, SM,&Yang, MS.(2004).The influence of interlayer cations on the photo-oxidative degradation of polyethylene/montomorillonite composites.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,42(16),3006-3012.
MLA Qin, HL,et al."The influence of interlayer cations on the photo-oxidative degradation of polyethylene/montomorillonite composites".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 42.16(2004):3006-3012.
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