Isothermal crystallization behavior of nano-alumina particles-filled poly(ether ether ketone) composites

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • J. H. Wu
  • M. S. Yen
  • C. W. Chen
  • M. C. Kuo
  • F. K. Tsai
  • J. S. Kuo
  • L. H. Yang

Detail(s)

Original languageEnglish
Pages (from-to)494-504
Journal / PublicationJournal of Applied Polymer Science
Volume125
Issue number1
Online published22 Dec 2011
Publication statusPublished - 5 Jul 2012
Externally publishedYes

Abstract

The isothermal crystallization behavior of nano-alumina particle-filled poly(ether ether ketone) (PEEK) composites has been investigated using differential scanning calorimeter. The results show that all the neat PEEK and nano-alumina-filled PEEK composites exhibit the double-melting behavior under isothermal crystallization. The peak crystallization times (τ p) for all the neat PEEK and PEEK/aluminum oxide (Al 2O 3) composites increase with increasing crystallization temperature. Moreover, the crystallinity of the PEEK/Al 2O 3 composite with 7.5 wt % nano-filler content reached the maximum value of 44.8% at 290°C, higher than that of the neat PEEK polymer. From the lower value in τ p and higher value in X c for the PEEK/Al 2O 3 composites, the inclusion of the nano-alumina into the PEEK matrix favored the occurrence of heterogeneous nucleation. The Avrami exponents n of all the neat PEEK and PEEK/Al 2O 3 composites ranged from 2 to 3, and the n values for PEEK/Al 2O 3 composites were slightly higher than that of the neat PEEK polymer, indicating that the inclusion of the nano-filler made the crystallization mechanism more complex. However, the growth rate of crystallization was lowered as the nano- filler was introduced, and the decrease in growth rate reduced the grain size of the PEEK spherulites because of the lowering of molecule mobility during isothermal crystallization. 

Research Area(s)

  • differential scanning calorimetry, high performance polymers, poly(ether ketones)

Citation Format(s)

Isothermal crystallization behavior of nano-alumina particles-filled poly(ether ether ketone) composites. / Wu, J. H.; Yen, M. S.; Chen, C. W.; Kuo, M. C.; Tsai, F. K.; Kuo, J. S.; Yang, L. H.; Huang, J. C.

In: Journal of Applied Polymer Science, Vol. 125, No. 1, 05.07.2012, p. 494-504.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review