China Plastics ›› 2008, Vol. 22 ›› Issue (07): 42-46 .DOI: 10.19491/j.issn.1001-9278.2008.07.008

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Study on Non-isothermal Crystallization Kinetics of POM/TPU Blends

LIU Chun-lin,ZHOU Ru-dong,DING Yong-hong,WU Dun   

  1. 1 .School of Materials Science and Engineering, Jiangsu Polytechnic University, C;hangzhou 213164,China;2. Polyrmer Materials Key Lab of C;hangzhou, C;hangzhou 213164,China
  • Received:2008-03-07 Revised:1900-01-01 Online:2008-07-26 Published:2008-07-26

Abstract: The non-isothermal crystallization behavior of POM and POM/TPU blends were investigated by differential scanning calorimetry (DSC).The Jeziorny, Ozawa, and Mo methods were employed to analyze the DSC data. The results showed that the width of the crystallization peak was broadened,the
crystallization temperature(Tc) decreased with increasing cooling rate.At the same cooling rate, Tc of the blends was higher than that of neat POM. Jeziorny method could well he used to treat the nonisothermal crystallization. It showed that TPU increased the crystallization rate, decreased the half crys-tallization time(t1/2),and changed the nucleating mechanism during crystallization of POM. However,Ozawa method did not fit the polymer blends, because it ignored the influence of secondary crystalliza-tlon.

Key words: polyoxymethylene, thermoplastic polyurethane clastomer, non-isothermal crystallization