The Molecular Structure and Behavior of Phosphazenes.
Abstract
Calculations of barriers associated with crankshaft motions in polyphosphazenes were made. To properly handle polar bonds in conformational energy calculations a new method was worked out that removes difficulties previously associated with polarity. Parameters were worked out for alkyl halides and the method was tested on them and found to be successful. It was also applied to the polar polymers polyvinylchloride and polyvinylidenechloride successfully. Dielectric measurements were made on poly bis(trifluoroethoxy) phosphazene and poly bis(p-methylphenoxy) phosphazene. Loss processes were identified with the side-group motions and glass transition in the amorphous fraction. The crystal disordering transition was accompanied by a large increase in conductance masking any dipolar loss. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 23, 1980
- Accession Number
- ADA084765
Entities
People
- Richard H. Boyd
Organizations
- University of Utah