Thermal stability and crystallization kinetics of isotactic polypropylene/organomontmorillonite nanocomposites

doi:10.1002/app.12580

CORC > 化学研究所 > 中国科学院化学研究所

	Thermal stability and crystallization kinetics of isotactic polypropylene/organomontmorillonite nanocomposites
	He, JD ; Cheung, MK ; Yang, MS ; Qi, ZN
刊名	JOURNAL OF APPLIED POLYMER SCIENCE
	2003-09-19
卷号	89 期号:12 页码:3404-3415
关键词	Crystallization Differential Scanning Calorimetry (Dsc) Thermogravirnetric Analysis (Tga) Poly(Propylene) (Pp) Nanocomposites
ISSN号	0021-8995
DOI	10.1002/app.12580
英文摘要	The 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.
语种	英语
出版者	JOHN WILEY & SONS INC
WOS记录号	WOS:000184195400032
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/81277]
专题	中国科学院化学研究所
通讯作者	Cheung, MK
作者单位	1.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
推荐引用方式 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.