Study of the self-diffusion of poly(ethylene glycol)s in poly(vinyl alcohol) aqueous systems

Model-based experimental analysis of enzyme kinetics in aqueous–organic biphasic systems

“…• There are several physical models which aim to describe the matrix interaction of a polymer on the diffusion rate of solutes (Cukier, 1984;Gao and Fagerness, 1995;Masaro and Zhu, 1999;Muhr and Blanshard, 1982). However, for DMBA and TMB the diffusion coefficients in bulk liquid are not available which is a prerequisite to quantify the matrix interaction.…”

Precise measurement of the self-diffusion coefficient for poly(ethylene glycol) in aqueous solution using uniform oligomers

“…Considerable data have been accumulated regarding the diffusion coefficient of PEG and poly͑ethylene oxide͒ ͑PEO͒ in solution. [4][5][6][7][8][9][10][11][12][13][14] In 1971, Tanner et al 4 determined the self-diffusion coefficient, D, of PEO in CCl 4 by pulsed NMR methods. They found that the logarithmic function of D, ln D, is proportional to the polymer concentration in low molecular weight samples; whereas, for high molecular weight polymers, plots of ln D versus concentration exhibit a marked upward curvature.…”

Lateral and Rotational Mobility of Some Drug Molecules in a Poly(Ethylene Glycol) Diacrylate Hydrogel and the Effect of Drug-Cyclodextrin Complexation

“…Various models for the description of diffusion of small molecules in polymer gels have been developed 19. In lattice models the diffusion of small molecules in a gel is described to take place in the water of the swollen gel.…”