ICCAS OpenIR
Conductive mechanism of polymer/graphite conducting composites with low percolation threshold
Zou, JF; Yu, ZZ; Pan, YX; Fang, XP; Ou, YC
2002-05-15
Source PublicationJOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
ISSN0887-6266
Volume40Issue:10Pages:954-963
AbstractPreparation of the conducting composites of polystyrene/expanded graphite via in situ polymerization and investigation of the conductive mechanism were carried out. They are characterized by high conductivity and a low percolation threshold. The electrical conductivity reached 10(-2) S/cm with 3.0 vol % expanded graphite content, whereas the percolation threshold was 1.0 vol %. Optical micrographs revealed the heterogeneous distribution of the graphite particles and the formation of a conductive network in the polymer matrix. A model of primary particle was proposed to interpret the conductive phenomena. The primary particle is the basic conductive unit in the composites that comprises three of the following parts: the graphite particle, the compact-adsorbed layer, and the wrapping shell. Our model was also used to explain the experimental data in our previous studies on nylon-6/expanded graphite composites. A low percolation threshold of conducting composites can be also explained according to the model of the primary particle. Furthermore, the theoretical line of conductivity versus primary particle content calculated from the revised Flory's theory fits the experimental data well. (C) 2002 Wiley Periodicals, Inc.
KeywordPolystyrene Nylon-6 Percolation Threshold Conducting Composites Expanded Graphite
DOI10.1002/polb.10141
Indexed BySCI
Language英语
WOS IDWOS:000175073800005
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:104[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/79116
Collection中国科学院化学研究所
Corresponding AuthorOu, YC
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Engn Plast, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zou, JF,Yu, ZZ,Pan, YX,et al. Conductive mechanism of polymer/graphite conducting composites with low percolation threshold[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2002,40(10):954-963.
APA Zou, JF,Yu, ZZ,Pan, YX,Fang, XP,&Ou, YC.(2002).Conductive mechanism of polymer/graphite conducting composites with low percolation threshold.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,40(10),954-963.
MLA Zou, JF,et al."Conductive mechanism of polymer/graphite conducting composites with low percolation threshold".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 40.10(2002):954-963.
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