Isothermal solubilities of benzene, dichloromethane, n-propyl acetate, and 2-butanone in poly(methyl methacrylate) (PMMA), poly(ethyl methacrylate) (PEMA), and two different PMMA/PEMA copolymers at 323.15 K are reported. Data were measured in the concentrated-polymer regime using a quartz crystal balance and are represented by a modified FloryÀHuggins equation to within experimental error. The model parameters show a trend with copolymer composition.
Solvent activity versus solvent weight fraction are reported for benzene, dichloromethane and n-propyl acetate in each of two different poly(methyl methacrylate)−polystyrene copolymers and for dichloromethane and n-propyl acetate in polystyrene homopolymer. Results were obtained at 323.15 K for low solvent weight fractions using a quartz crystal balance. A modified Flory−Huggins equation is used to interpret the data.
Isothermal solubilities
at 323.15 K of benzene, dichloromethane,
and 2-butanone in poly(methyl methacrylate), poly(butyl methacrylate),
and two different poly(methyl methacrylate)-poly(butyl methacrylate)
copolymers are reported. Results were obtained for the concentrated
polymer regime with a quartz crystal balance and are represented to
within experimental error by a modified Flory–Huggins equation.
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