The measurement of polymer swelling processes by an interferometric method and evaluation of diffusion coefficients.
The amorphous polymer film swelling in a liquid solvent below the glass transition temperature was characterized by a few kinetic parameters (especially the mutual diffusion coefficient of swelling and its mean value) obtained by interference of monochromatic light in the wedge arrangement. This interferometric method allows one to determine the concentration field in the swollen surface layer and consequently to compute the concentration-dependent diffusion coefficient. A software system developed at the Department of Physics and Material Engineering at TBU in Zlin has been used for the evaluation of the main kinetic parameters of the swelling process. The software can be used for the on-line analyses of interferograms during the swelling process. The main application outputs are the computation of the concentration profile, the concentration gradient, the mutual diffusion coefficient of the swelling by the solvent and its mean value.
Mráček
Aleš
A
Department of Physics and Material Engineering, Faculty of Technology, Tomas Bata University in Zlin, Nad Stráněmi 4511, 760 05 Zlín, Czech Republic.
D004058:Diffusion; D006820:Hyaluronic Acid / Q000737:chemistry; D007368:Interferometry; D007700:Kinetics; D011108:Polymers / Q000737:chemistry*; D012984:Software; D012997:Solvents / Q000737:chemistry; D013696:Temperature
D011108:Polymers; D012997:Solvents; D006820:Hyaluronic Acid
Comput Methods Programs Biomed. 2003 Jan;70(1):61-9
12468127
J Biomed Mater Res A. 2007 Oct;83(1):184-90
17397039
Molecules. 2008 May 01;13(5):1025-34
18560327
Biopolymers. 1982 Mar;21(3):583-99
7066473