کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4768020 1424513 2017 37 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Predictive model for gas and vapor sorption and swelling in glassy polymers: II. Effect of sample previous history
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Predictive model for gas and vapor sorption and swelling in glassy polymers: II. Effect of sample previous history
چکیده انگلیسی
The solubility of various gases in several glassy polymers has been analyzed by the nonequilibrium thermodynamics for glassy polymers (NET-GP) framework, coupled with a lattice fluid equation of state model. Moreover, a simple rheological tool recently introduced for the a priori evaluation of the penetrant induced swelling is employed to predict the volumetric behavior of the solute/polymer mixture below Tg. Such model accounts for an additional nonequilibrium parameter for the description of polymer phase that represents its pseudoequilibrium compressibility, and it can be retrieved from pure component pressure-volume-temperature data below Tg. More in detail, the effect of polymer pretreatment and its prior history (e.g. annealing or conditioning by preswelling) on the resulting solubility behavior has been thoroughly analyzed and discussed, and the experimental data obtained for several penetrant/polymer couples have been well described by the present model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 444, 25 July 2017, Pages 47-55
نویسندگان
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