Synthesis and polymerization of p-pentamethyldisiloxanyl-α,β,β-trifluorostyrene and the oxygen permeability of the polymer

Article abstract of DOI:10.1016/S0022-1139(00)82421-5

A novel monomer, p-pentamethyldisiloxanyl-α,β,β-trifluorostyrene, has been synthesized and polymerized to give a white polymer.Membranes obtained from the polymer exhibited an oxygen permeability coefficient (P_O2: cc(STP) cm/cm²scmHg) and an oxygen separation factor (α=P_O2/P_O2) of 1.8 * 10^-9 amd 2.4, respectively.The P_O2 value is considerably higher than values for other poly(mono-substituted tetrafluoroethylenes).The introduction of a pentamethyldisiloxanylphenyl group into poly(tetrafluoroethylene) has been found to be very effective the enhancement of P_O2 values.