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Epitaxial crystallization of polyphenylene sulfide on sodium chloride

Published online by Cambridge University Press:  31 January 2011

X. J. Qian ,
S. E. Rickert  and
J. B. Lando
X. J. Qian
Affiliation:
Department of Macromolecular Science, Case Western Reserve University, Cleveland, Ohio 44106
S. E. Rickert
Affiliation:
Department of Macromolecular Science, Case Western Reserve University, Cleveland, Ohio 44106
J. B. Lando
Affiliation:
Department of Macromolecular Science, Case Western Reserve University, Cleveland, Ohio 44106
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Abstract

Epitaxial crystallization of polyphenylene sulfide (PPS) from 1-chloronaphthalene solution on NaCl (001) surface has been studied using electron microscopy and electron diffraction techniques. Three different epitaxial morphologies were observed: (1) conventional rodlike structures (fold plane epitaxy); (2) platelet structures (fold surface epitaxy); and (3) roselike structures whose growth mechanism and molecular packing are not completely understood at present. Of primary importance is the fact that a possible new crystal structure β-phase) of PPS was formed in the fold surface epitaxy through a true two-dimensional lattice matching by lateral lattice dimensional adjustment of PPS. Lattice match criterion again shows its merit in explaining the formation of fold surface epitaxy and the new crystal structure of PPS. Solution concentration, crystallization temperature, and time have significant influence on crystal growths, orientations, molecular packing, and morphological arrangements.

Type
Articles
Information
Journal of Materials Research , Volume 4 , Issue 4 , August 1989 , pp. 996 - 1004
Copyright
Copyright © Materials Research Society 1989

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References

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