Nonisothermal melt and cold crystallization kinetics of poly(aryl ether ether ketone ketone)

Polymer Engineering and Science - Tập 37 Số 3 - Trang 568-575 - 1997
Tianxi Liu1, Zhishen Mo1, Shanger Wang1, Hongfang Zhang1
1Laboratory of Polymer Physics, Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022, P. R. China

Tóm tắt

AbstractAnalysis of the nonisothermal melt and cold crystallization kinetics of poly(aryl ether ether ketone ketone) (PEEKK) was performed by using differential scanning calorimetry (DSC). The Avrami equation modified by Jeziorny could describe only the primary stage of nonisothermal crystallization of PEEKK. And, the Ozawa analysis, when applied to this polymer system, failed to describe its nonisothermal crystallization behavior. A new and convenient approach for the nonisothermal crystallization was proposed by combining the Avrami equation with the Ozawa equation. By evaluating the kinetic parameters in this approach, the crystallization behavior of PEEKK was analyzed. According to the Kissinger method, the activation energies were determined to be 189 and 328 kJ/mol for nonisothermal melt and cold crystallization, respectively.

Từ khóa


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Thông tin
Thông tin xuất bản

Polymer Engineering and Science

Tập 37 Số 3

568-575

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