Dynamic Mechanical Behavior and Prediction for PP/POE Blends

Chemical Research in Chinese Universities ›› 2009, Vol. 25 ›› Issue (4): 573-578.

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Dynamic Mechanical Behavior and Prediction for PP/POE Blends

YING Ji-ru^1,2,3, XIE Xiao-lin^1,2*, ZHOU Xing-ping², ZHOU Hua-min¹ and LI De-qun¹

1. State Key Laboratory of Plastic Forming Simulation and Die & Mould Technology, Wuhan 430074, P. R. China;
2. Hubei Key Laboratory of Materials Chemistry and Service Failure, Department of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China;
3. School of Chemical and Environmental Engineering, Hubei University of Technology, Wuhan 430068, P. R. China

Received:2008-06-30 Revised:2008-08-04 Online:2009-07-25 Published:2009-10-16
Contact: XIE Xiao-lin. E-mail: xlxie@mail.hust.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.20490220), Open Fund of State Key Laboratory of Plastic Forming Simulation and Die & Mould Technology, China(No.05-10), Open Fund of Hubei Key Laboratory of Materials Chemistry and Service Failure, and Program for New Century Excellent Talents in Universities of China(No.NCET-05-0640).

Abstract

Abstract:

Polypropylene(PP)/ethylene-octene copolymer(POE) blends were prepared with a twin-screw extruder. Their dynamic mechanical behavior were systematically investigated. The results show that PP/POE blends are heterogeneities with a partial compatible two-phase structure, the glass transition temperature of PP phases in the blends tends to shift towards high temperature with increasing the POE content, and the glass transition temperature of POE phases shifts towards the low temperature with increasing the PP content. The Kerner’s dispersed phase model and co-continuous phase model can reasonably predict the visco-elasticity of PP/POE blends with different compositions. Additionally, the morphological structure of the blends can be estimated via comparing the predicted DMA behavior with the experimental data.

Key words: PP/POE blend; Dynamic mechanical behavior; Dispersed phase model; Co-continuous phase model

YING Ji-ru, XIE Xiao-lin*, ZHOU Xing-ping, ZHOU Hua-min and LI De-qun. Dynamic Mechanical Behavior and Prediction for PP/POE Blends[J]. Chemical Research in Chinese Universities, 2009, 25(4): 573-578.

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Dynamic Mechanical Behavior and Prediction for PP/POE Blends

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