Nonisothermal crystallization kinetics of HDPE/SEBS-g-MAH

Document Type

Article

Publication Date

4-1-2008

Abstract

The isothermal crystallization kinetics of HDPE, HDPE/SEBS and HDPE/SEBS-g-MAH at different cooling rates have been investigated by differential scanning calorimetry (DSC). The methods of Mo Zhi-shen and Kissinger for isothermal crystallization kinetics were used to analyze the crystallization characteristics of HDPE, HDPE/SEBS and HDPE/SEBS-g-MAH. The results demonstrate that the crystallization rate of HDPE is highest and that of SEBS/HDPE is higher than that of HDPE/SEBS-g-MAH with the aid of Mo Zhi-shen method and DSC curves. The enthalpy of HDPE is decreased with adding SEBS due to partial destruction of crystal region and the enthalpy of HDPE/SEBS-g-MAH is lowest owing to stronger effect among polar branch groups. According to the analysis of Kissinger method, the crystallization activation energy of HDPE, HDPE/SEBS and HDPE/SEBS-g-MAH is 446.50 kJ/mol, 476.03 kJ/mol and 407.85 kJ/mol, respectively.

Publication Source (Journal or Book title)

Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering

First Page

121

Last Page

124

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