A potentiostatic study of oxygen transport through poly(2-ethoxyethyl methacrylate-co-2,3-dihydroxypropylmethacrylate) hydrogel membranes.
The oxygen permeability and diffusion coefficients of hydrogel membranes prepared with copolymers of 2-ethoxyethyl methacrylate (EEMA)/2,3-dihydroxypropylmethacrylate (MAG) with mole fraction of the second monomer in the range between 0 and 0.75 are described. Values of the permeability and diffusion coefficients of oxygen are determined by using electrochemical procedures involving the measurement of the steady-state current in membranes prepared by radical polymerization of the monomers. The results obtained for the transport properties were analyzed taking into account the fractional free volumes, the cohesive energy densities and the glass transition temperatures of the hydrogels.
Compañ
Vicente
V
Departamento Termodinamica Aplicada, Universidad Politécnica de Valencia, Camino de Vera s/n. 46020-Valencia, Spain. vicommo@ter.upv.es
Tiemblo
Pilar
P
García
F
F
García
J M
JM
Guzmán
Julio
J
Riande
Evaristo
E
D001672:Biocompatible Materials / Q000032:analysis / Q000737:chemistry*; D004058:Diffusion; D004563:Electrochemistry / Q000379:methods*; D020100:Hydrogels / Q000032:analysis / Q000737:chemistry*; D008422:Materials Testing / Q000379:methods; D008689:Methacrylates / Q000032:analysis / Q000737:chemistry*; D008768:Methylmethacrylates / Q000032:analysis / Q000737:chemistry*; D010100:Oxygen / Q000032:analysis / Q000737:chemistry*; D010539:Permeability
C102901:2,3-dihydroxypropylmethacrylate; D001672:Biocompatible Materials; D020100:Hydrogels; D008689:Methacrylates; D008768:Methylmethacrylates; C029263:2-ethoxy ethyl methacrylate; D010100:Oxygen