Accession Number : ADA302354

Title :   Solid State NMR Studies of Morphology and Orientation in Polymers.

Descriptive Note : Final rept. 1 Mar 91-30 Nov 95,

Corporate Author : TEXAS A AND M UNIV COLLEGE STATION DEPT OF CHEMISTRY

Personal Author(s) : Haw, James F.

PDF Url : ADA302354

Report Date : 22 NOV 1995

Pagination or Media Count : 6

Abstract : Our objective was to provide research training opportunities for graduate students in NMR characterization of polymers, in particular polymers for NLO applications. We collaborated with the Allcock group at Penn State and have a large paper in press in Macromolecules on polyphosphazene NLO polymers. The methodology was to use P-3l and C-l3 MAS NMR to study in detail the temperature dependent main-chain and NLO side-group dynamics in two NLO polymers. We studied photochemical cross-linking in host polymer systems and verified the 2+2 mechanism that was central to the original proposal. This was first communicated in Macromolecules , and other work will be forthcoming. jg p.4

Descriptors :   *NUCLEAR MAGNETIC RESONANCE, *POLYMERS, *MORPHOLOGY, *SOLID STATE CHEMISTRY, PHOTOCHEMICAL REACTIONS, NONLINEAR OPTICS, CROSSLINKING(CHEMISTRY), MACROMOLECULES, PHOSPHAZENE.

Subject Categories : Polymer Chemistry
      Physical Chemistry
      Atomic and Molecular Physics and Spectroscopy
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE