High-pressure studies of the vibrational spectra of polymers and associated materials

Presented in this thesis is the effect of pressure on the vibrational spectra of a series of eleven crystalline paraffin hydrocarbons from n-C$\sb8$H$\sb{18}$ to n-C$\sb{36}$H$\sb{74}$ plus n-C$\sb8$D$\sb{18}$ and a few branched chain compounds. Also presented are data for a series of six polyethylenes of varying molecular weight and crystallinity. The focus is on the increase in intensity of the CH$\sb2$ wagging and C-C stretching vibrations with pressure. The sum of these two intensities increased in a manner which depends primarily on chain length. The distribution of intensity between the two vibrations depends on the crystal structure. In the long chain limit, i.e. the polyethylenes, it is demonstrated that the C-C stretch borrows intensity from the CH$\sb2$ wag to the extent of overwhelming it.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemistry, Physical

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Ley, Walter Weber

Contributors dc:contributor

• Drickamer, H.G.

• Chemistry, Physical
• Engineering, Chemical
• Physics, Molecular

Statement dc:rights

• Copyright 1989 Ley, Walter Weber

Language dc:language

eng

Identifier

AAI9010931
(UMI)AAI9010931

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/23615