Accession Number : ADA131405

Title :   Epitaxial Polymerization as a Molecular Engineering Technique.

Descriptive Note : Final rept. 1 Apr 80-31 Mar 83,

Corporate Author : CASE WESTERN RESERVE UNIV CLEVELAND OH DEPT OF MACROMOLECULAR SCIENCE

Personal Author(s) : Lando,Jerome B ; Baer,Eric

PDF Url : ADA131405

Report Date : Aug 1983

Pagination or Media Count : 11

Abstract : Epitaxial crystallization is the oriented over-growth of a substance on a crystalline substrate. The interaction between the two is usually highly specific and has profound effects on the morphology and structure of the crystallizing material. Epitaxial polymerilar science. It combines the epitaxial crystallization of a monomer on a crystallization of the monomer. A study of the vapor phase epitaxial polymerization of dissulfurnitride to polythiazyl, (SN)x, resulted in three new crystalline phases of (SN)x, and a new appreciation of the catasphoric effect of water on this polymer. The epitaxial polyermization of hexachlorocyclotriphosphazene to poly(dichlorophosphazene), (NPC12)x, has been investigated. Deposition from both the vapro phase and solution has been studied. The polymer structure and morphology depend upon the monomer epitaxial crystals. The actual monomer morphology and structure have been found to be dependent of the geometry of the substrate. The application of this method to the epitaxial polymerization of diacetylenes will also be discussed.

Descriptors :   *Polymerization, *Epitaxial growth, *Molecular properties, Reports, Abstracts, Sulfur compounds, Nitrogen compounds, Phosphazene, Alcohols, Phenyl radicals, Urethanes, Acetylenes, Crystallization

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE