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Citation: XU Wei-Bing, LIANG Guo-Dong, HANG Guo-Pei, HE Ping-Sheng. Nonisothermal Crystallization Kinetics of PP/PP-g-MAH/Org-MMT Nanocomposite[J]. Chinese Journal of Applied Chemistry, ;2002, 19(8): 754-758. shu

Nonisothermal Crystallization Kinetics of PP/PP-g-MAH/Org-MMT Nanocomposite

1.
a College of Chemical Engineering, Hefei University of Technology, Hefei 230009;
2.
b Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026

Corresponding author: XU Wei-Bing,
Received Date: 5 December 2001
Available Online: 3 April 2002
Fund Project: 安徽省自然科学基金项目(99046317) (99046317)

The nonisothermal crystallization processes of polypropylene(PP) and polypropylene/poly(propylene-g-maleic anhydride)(PP-g-MAH)/organo montmorillonite(Org-MMT) have been investigated by DSC. The Avrami and Ozawa equations were used to describe the nonisothermal crystallization processes of the above systems. The parameter values of t_1/2、Z_c、F(T)、T_p indicated that at the same cooling rate the crystallization rate of PP/PP-g-MAH/Org-MMT composite was greater than that of PP and that the crystallization temperature of the former was higher than that of the latter. The activation energies of PP and composites calculated by Kissinger method revealed that the addition of Org-MMT in PP increased the activation energy of PP, however, the addition of PP-g-MAH in PP/Org-MMT composite decreased its activation energy, even close to that of pure PP.
- polypropylene,
- montmorillonite,
- nanocomposite,
- nonisothermal crystallization kinetics
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