Sorption of Benzene, 2-Butanone, and Chloroform by Polybutadiene and its Copolymers with Polystyrene at 298.15 K Using a Quartz-Crystal Microbalance

Abstract

Solubilities of benzene, 2-butanone, and chloroform in polybutadiene (PBD) and three PBD and polystyrene (PS) copolymers at 298.15 K are reported in this paper. Mass fraction data are collected using a quartz-crystal microbalance (QCM) and related to activity using the Flory− Huggins model; the weight-based activity coefficients at infinite dilution are then obtained and related to copolymer composition. The complexities of collecting data using a QCM for rubbery and glassy polymers are also discussed.

Sorption of Benzene, Toluene, and Ethylbenzene at Low Concentrations by Plasticized Poly(ethyl methacrylate) and Polystyrene Polymers Using a Quartz Crystal Microbalance at 298.15 K

“…Solubility data of organic compounds in polymers and co-polymers from the quartz crystal microbalance (QCM) have produced interesting thermodynamic results and interpretation. − In this study, we present solubilities of benzene, toluene, and ethylbenzene (BTEX compounds, along with xylenes) in plasticized poly­(ethyl methacrylate) (PEMA) and polystyrene (PS) at 298.15 K using a QCM equipped with a new vapor generation system to target low concentrations. As part of the continuing study on the effect of added plasticizers on solvent sorption, three plasticizers, diisononyl cyclohexane-1,2-dicarboxylate (DINCH), diisooctyl azelate (DIOA), and n -butyl stearate (BS), have been added to the homopolymers of PEMA and PS.…”