Accession Number:

ADA170690

Title:

Studies of Chain Conformational Kinetics in Poly(Di-n-Akylsilanes) by Spectroscopic Methods. 2. Conformation and Packing of Poly(Di-n-Hexylsilane),

Descriptive Note:

Corporate Author:

IBM ALMADEN RESEARCH CENTER SAN JOSE CA

Report Date:

1986-08-07

Pagination or Media Count:

45.0

Abstract:

Unoriented and highly oriented films of polydi-n-hexylsilane have been studied by Raman scattering, wide angle X-ray diffraction and optical absorption measurements. From a comparison of group theoretical predictions with those bands observed in the Raman experiments and from the X-ray layer line spacing in an oriented sample, a planar zig-zag conformation for the silicon backbone was deduced. X-ray reflections were suitable indexed by a monoclinic unit cell containing two molecules. Polarized Raman studies on uniaxiallly oriented samples also revealed that the hexyl side chains are not orthogonal to the silicon backbone but may be slightly titled in order to minimize intramolecular steric interactions.

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE