ICCAS OpenIR
Thermal stability and crystallization kinetics of isotactic polypropylene/organomontmorillonite nanocomposites
He, JD; Cheung, MK; Yang, MS; Qi, ZN
2003-09-19
Source PublicationJOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
Volume89Issue:12Pages:3404-3415
AbstractThe thermal stability and crystallization kinetics of isotactic polypropylene (iPP) and iPP/organomont-morillonite (organo-MMT) nanocomposites were investigated with differential scanning calorimetry and thermogravimetry. The incorporation of organo-MMT up to a concentration of 4 wt % did not affect the melting temperature of iPP but did increase the peak thermal degradation temperature by 60degreesC. The isothermal crystallization kinetics showed that the addition of organo-MMT increased the crystallization rate of iPP but reduced the isothermal Avrami exponent. The crystallization temperature of the nanocomposites measured with nonisothermal crystallization was higher than that of plain iPP, and this indicated an enhanced crystallization rate. The nonisothermal Avrami exponent, like the isothermal exponent, decreased with the addition of organo-MMT, and this suggested changes in the crystallite growth geometry. Subsequently, the tensile yield strength and the tensile modulus both increased, but the elongation at break and the notched Izod impact strength did not change significantly. (C) 2003 Wiley Periodicals, Inc.
KeywordCrystallization Differential Scanning Calorimetry (Dsc) Thermogravirnetric Analysis (Tga) Poly(Propylene) (Pp) Nanocomposites
DOI10.1002/app.12580
Indexed BySCI
Language英语
WOS IDWOS:000184195400032
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/81278
Collection中国科学院化学研究所
Corresponding AuthorCheung, MK
Affiliation1.Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Kowloon, Hong Kong, Peoples R China
2.Chinese Acad Sci, Inst Chem, Key State Lab Engn Plast, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
He, JD,Cheung, MK,Yang, MS,et al. Thermal stability and crystallization kinetics of isotactic polypropylene/organomontmorillonite nanocomposites[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2003,89(12):3404-3415.
APA He, JD,Cheung, MK,Yang, MS,&Qi, ZN.(2003).Thermal stability and crystallization kinetics of isotactic polypropylene/organomontmorillonite nanocomposites.JOURNAL OF APPLIED POLYMER SCIENCE,89(12),3404-3415.
MLA He, JD,et al."Thermal stability and crystallization kinetics of isotactic polypropylene/organomontmorillonite nanocomposites".JOURNAL OF APPLIED POLYMER SCIENCE 89.12(2003):3404-3415.
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