Synthesis of New Polyphosphazene Elastomers
Abstract
The work described in this paper is part of our program to synthesize a new class of phosphazene elastomers. The cyclic phosphazenes, N3P3F5(CMe3), N3P3F5Ph, non-gem-N3P3C14Me2, non-gem-N3P3C14Et2, (NPC1Me)3, and (NPC1Me)4 have been polymerized to macromolecules of formula (NPF2)2NPFR(n), NPC12(NPC1R)2(n), and (NPC1R)(n). Species (NPC1Me)3 and (NPC1Et)3 were copolymerized with (NPC12)3 to yield polymers of type NPC12)x(NPC1R)yn. The halogen atoms in the high polymers were replaced by trifluoroethoxy groups to yield hydrolytically-stable derivatives. The influence of the alkyl or aryl groups on the properties of the polymers is described. The new polymers are elastomers, with glass transition temperatures in the -40 to -60 C range.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1990
- Accession Number
- ADA217585
Entities
People
- Gayann S. Mcdonnell
- Harry R. Allcock
- James L. Desorcie
Organizations
- Pennsylvania State University