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The solubility of carbon dioxide (CO2) and dimethyl ether (DME) blends in polystyrene (PS) is studied as a function of the temperature and the pressure. The solubility was measured by means of the gravimetric method and a visualizing dilatometer which determined the swollen volume to compensate for the buoyancy change due to swelling. The solubility of the blend gases for the ternary PS/CO2/DME system...
The viscometric behavior of polystyrene (PS) in a mixed solvent of toluene/cyclohexane and with varying temperature was thoroughly investigated. It has been found that, in the plot of the reduced viscosity (ηsp/C) vs. concentration, the intrinsic viscosity of PS increased in the mixed solvent with higher ratio of toluene/cyclohexane or when measured at higher temperature, indicating that the polymer–solvent...
Three new thiophene derivatives containing different activated ester groups covalently attached to the thiophene ring via a linear undecyl spacer have been synthesized. Electropolymerization of these monomers in acetonitrile led to stable electroactive polymers, while activated functional groups withstand the polymerization conditions and were correctly incorporated in the resulting polymers. These...
A charge-transfer fluorescence molecule has been applied to study the structure of polystyrene latices and polystyrene—glycidylmethacrylate core—shell latices. Information on the composition of the latex could be obtained on the basis of the combined application of steady state and time-resolved fluorescence measurements. Time-resolved measurements were done using a frequency-domain approach; the...
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