Study by response surface methodology of the swelling kinetic of weakly basic polyacrylamide gels in water
-
1
Universidad de La Rioja
info
ISSN: 0014-3057
Año de publicación: 1999
Volumen: 35
Número: 3
Páginas: 509-516
Tipo: Artículo
Otras publicaciones en: European Polymer Journal
Resumen
The aqueous swelling kinetic and cooperative diffusion coefficient were studied for various crosslinked polyacrylamide gels, copolymerized with N,N-dimethylaminoethyl methacrylate (DMA), containing different crosslinker ratios, monomer concentrations and percentages of ionizable monomer. The cooperative diffusion coefficient was determined using a theory developed by Li and Tanaka for the swelling kinetics of disk gels. Using experimental design, response surfaces were calculated for the cooperative diffusion coefficient as a function of gel composition. The results obtained show that the degree of crosslinking and the percentage of ionizable monomer are the variables which most strongly affect the cooperative diffusion coefficient. © 1998 Elsevier Science Ltd. All rights reserved.