Abstract
A mathematical model describing interfacial radical polymerization-based film formation on hydrogels is elucidated. A glucose oxidase-mediated multistage initiation reaction is used to accomplish interfacial film formation. A polymer concentration-dependent diffusion coefficient is used to reflect the changing mass transport conditions as the film develops. Model predictions of the film thickness as a function of the species concentrations agree well with experiments. The model predicts that the degree of initiation reaction delocalization with the enzyme-mediated initiation system is significantly higher than an enzyme-independent system, thus affecting the film growth rate and structure. The mass transport properties of the film and its adhesion to the underlying substrate are also investigated.
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