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.

Subject Categories:

  • Organic Chemistry
  • Physical Chemistry
  • Polymer Chemistry
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE