Swelling Behavior of Polyfurfuryl Alcohol Networks

Polyfurfuryl alcohol (PFA) was crosslinked in the presence of various concentrations of oxalic acid, OX, as a curing catalyst. Acetonitrile was used as a proper solvent for PFA/OX systems. Swelling behavior of the samples was characterized as a function of used acid concentrations and the mechanisms were studied by applying kinetic models to the swelling data supporting non-Fickian, anomalous diffusion mechanism in highly crosslinked samples. Dynamic swelling studies of the networks showed that it takes 16-30 days for the networks to reach their equilibrium swelling state due to the chain rigidity and high crosslinking density

کلیدواژه ها:

Polyfurfuryl alcohol ، Curing ، Oxalic acid ، Swelling behavior ، Network parameters