Sudies on Non-isothermal Melt Crystallization Kinetics in PET/PEN/DBS Blends

Chem. J. Chinese Universities

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Sudies on Non-isothermal Melt Crystallization Kinetics in PET/PEN/DBS Blends

LI Gui-Juan^1,2*; XU Xiao-Duo¹; XU Xue-Li¹; YU Bao-Jie¹; LI Yi¹; ZHOU En-Le²

1. College of Chemical Engineering, Changchun University of Technology,
Changchun 130012, China;
2. State Key Laboratory of Polymer Physics and Chemistry, Changchun
Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun
130022, China

Received:2005-06-13 Revised:1900-01-01 Online:2006-06-10 Published:2006-06-10
Contact: LI Jia-Juan

Abstract

Abstract: Macrokinetic models, namly the modified Avrami, Ozawa and Zibicki models, were applied to study the non-isothermal melt crystallization process of PET/PEN/DBS blends by DSC measurement. The modified Avrami model was found to describe the experimental data fairly well. With the cooling rates in the range from 5 to 20 K/min, Ozawa model could be well used to describe the early stages of crystallization. However, Ozawa model did not fit the polymer blends during the late stages of crystallization, because it ignored the influence of secondary crystallization. The crystallization ability of the blends decreases with increasing the DBS content from analysis by using Ziabicki kinetic model, which is similar to the results based on calculation of the effective energy barrier of the blends.

Key words: PET, PEN, Non-isothermal crystallization kinetics

CLC Number:

O631

TrendMD:

LI Gui-Juan^1,2*; XU Xiao-Duo¹; XU Xue-Li¹; YU Bao-Jie¹; LI Yi¹; ZHOU En-Le². Sudies on Non-isothermal Melt Crystallization Kinetics in PET/PEN/DBS Blends[J]. Chem. J. Chinese Universities, doi: .

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Sudies on Non-isothermal Melt Crystallization Kinetics in PET/PEN/DBS Blends

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