Poly(vinyl acetate) (PVAc) is an important polymer in applications because of both its bulk and surface characteristics. Its chain architecture gives it a low Tg and, generally, good qualities for processing and applications, which include paints, adhesives, thin films and surface coatings. In this study, we investigate the surface dynamics of PVAc absorbed onto silica with deuterium nuclear magnetic resonance (2H NMR). For dynamics studies, 2H NMR is an excellent technique because it uses an innocuous probe that can report on correlation times (τc) from approximately 10-8 s to 10 s. We report the use of two-dimensional exchange NMR (2D-X) and a side-chain methyl-d3 probe to investigate surface dynamics with τ c s in the range of 10-6 to over 1 s.
R. D. O'Connor et al., "Dynamics of Poly(Vinyl Acetate)-d₃ on Silica," Polymer Preprints, American Chemical Society (ACS), Jan 2001.
Mechanical and Aerospace Engineering
National Science Foundation (U.S.)
Article - Journal
© 2001 American Chemical Society (ACS), All rights reserved.