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“Dynamics of Phase Segrewation in Poly-P-Phenylene Terephtualamide and Amorphous Nylon Molfcular Composites”

Published online by Cambridge University Press:  21 February 2011

Thein Kyu ,
Jan Chang Yang  and
Tsuey Ing Chen
Thein Kyu
Affiliation:
Institute of Polymer Engineering, University of Akron, Akron, Ohio 44325
Jan Chang Yang
Affiliation:
Institute of Polymer Engineering, University of Akron, Akron, Ohio 44325
Tsuey Ing Chen
Affiliation:
Institute of Polymer Engineering, University of Akron, Akron, Ohio 44325
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Abstract

Time-resolved light scattering has been employed to elucidate the dynamics of phase segregation of poly-p-phenylene terephthalamide (PPTA)/ amorphous nylon (AN) molecular composites. Miscible PPTA/AN blends can be prepared from sulfuric acid solution by rapidly coagulating the solution in distilled water. The composites, however, undergo phase segregation upon thermal treatment and exhibit a miscibility window reminiscent of a lower critical solution temperature (LCST). Several temperature-jump experiments were undertaken from ambient to a two-phase temperature region of 240, 250 and 260°C. Time-evolution of scattering profiles are analyzed in accordance with non-linear and dynamical scaling theories.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 171: Symposium O – Polymer Based Molecular Composites , 1989 , 211
Copyright
Copyright © Materials Research Society 1990

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References

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