Solubilities of Dichloromethane, Diethyl Ether, Ethyl Acetate, and Nitrobenzene in Three Polymers Using the Piezoelectric Quartz Sorption Method

Abstract

The solubilities of dichloromethane, diethyl ether, ethyl acetate, nitrobenzene in polyisobutylene (PIB), poly(nbutyl methacrylate) (PBMA), and poly(vinyl acetate) (PVAc) were measured by the piezoelectric quartz crystal microbalance method at four temperatures, (293.2, 313.2, 333.2, and 353.2) K. In this work, three quartz crystals were installed in an equilibrium cell, which enables multiple solubility measurements. The estimated experimental uncertainty was less than 1 % for solvent activity and 6.6 % mass fraction at the lowest solubility region, with a lower uncertainty being found in the higher solubility region. The accuracy of the apparatus was confirmed by comparison of the experimental data obtained in this work with the literature data. The Flory-Huggins equation with the temperature-dependent interaction parameter was used for the correlation of the experimental data with an overall average absolute deviation in activities of 6.5 %.

Sorption of Benzene, Dichloromethane, and 2-Butanone by Poly(methyl methacrylate), Poly(butyl methacrylate), and Their Copolymers at 323.15 K Using a Quartz Crystal Balance

“…Figure compares the results of the present study for dichloromethane + PBMA to those reported by Wibawa et al at the same temperature and polymer molecular weight conditions as for benzene and 2-butanone. Here, the temperature dependence suggested by the latter study is much larger than for the other two systems under comparison, and the activities reported by the two investigations are not in agreement.…”

“…The activities of benzene in poly­(butyl methacrylate) at 323.65 K were reported by Wohlfarth for solvent weight fractions of between approximately 0.3 and 0.5 and at 293.2 to 353.2 K by Wibabwa et al for solvent weight fractions up to about 0.3. Activities in poly­(butyl methacrylate) under conditions similar to those in ref have been reported for 2-butanone and dichloromethane …”

“…Cross-study comparison of activities a 1 of dichloromethane (1) in PBMA as a function of dichloromethane weight fraction w 1 . ■ = present study, 323.15 K; ⧫ = Wibawa et al, 313.2 K; and ● = Wibawa et al, 333.2 K. The dashed line is the Flory–Huggins model with the χ parameter obtained from infinite dilution activity coefficients reported by Hao et al …”

“…Activities in poly(butyl methacrylate) under conditions similar to those in ref 7 have been reported for 2-butanone 8 and dichloromethane. 9 Infinite dilution activity coefficients at temperatures of between 453 and 493 K have been reported by Tochigi et al 10 for benzene and 2-butanone in poly(methyl methacrylate), from 363 to 383 K by Hao et al 11 for benzene in poly(methyl methacrylate), and from 343 to 413 K by Hao et al 11 for dichloromethane and benzene in poly(butyl methacrylate).…”

Interaction parameters for the uptake of sulfur mustard mimics into polyurethane films

“…While QCM-D gas uptake experiments involving chemical warfare agents and other volatile organic compounds are not novel, QCM-D use has seen limited application in probing fundamental interactions in gas-polymer systems. [5][6][7][8]…”