Accession Number:
ADA281570
Title:
NMR Studies of Polymers at Interfaces
Descriptive Note:
Rept. for 1 Jan 1993-8 Jul 1994
Corporate Author:
MISSOURI UNIV-ROLLA DEPT OF CHEMISTRY
Personal Author(s):
Report Date:
1994-07-08
Pagination or Media Count:
8.0
Abstract:
A review of NMR studies done in our laboratory on the dynamics of polymers adsorbed at interfaces is made. Of specific interest is polymers adsorbed on solid substrates at the 1 solution, 2 gas, and 3 polymer interface. In solution we have used deuterium NMR relaxation times to show the enhanced motional mobility of styrene segments of vinylpyridine-styrene block copolymers, adsorbed on silica, and swollen with toluene. At the gas interface, we show how the presence of the interface can turn a rubbery polymer into a glassy one with carbon-13 studies of polyiso-propyl acrylate. At the polymer interface, we show how the overpolymerization of bismaleimide slows the dynamics of the interfacial layer of silane coupling agent. Polymers, Interfaces, NMR, Surfaces.
Descriptors:
Subject Categories:
- Organic Chemistry
- Physical Chemistry
- Polymer Chemistry
- Atomic and Molecular Physics and Spectroscopy