Gas sorption and dilation in poly(2,2-bistrifluoromethyl-4,5-difluoro-1,3-dioxole-co-tetrafluoroethylene): comparison of experimental data with predictions of the nonequilibrium lactice fluid model

M. G. De Angelis, T. C. Merkel, V. I. Bondar, B. D. Freeman, F. Doghieri, G. C. Sarti

Research output: Contribution to journalArticleResearchpeer-review

86 Citations (Scopus)


The sorption and dilation properties of a series of n-alkanes and the corresponding perfluorinated compounds have been examined in two amorphous copolymers of tetrafluoroethylene (TFE) and 2,2-bis(trifluoromethyl)-4,5-difluoro-1,3-dioxole (BDD), commercially available under the names Teflon AF1600 and AF2400. The analysis was made at three different temperatures: 25, 35, and 45°C, to test the effect of temperature on solubility and to evaluate the sorption enthalpies. The partial molar volumes of most penetrants have also been determined in both copolymers. The experimental data have been satisfactorily compared with the sorption isotherms predicted or correlated using the nonequilibrium lattice fluid model.

Original languageEnglish
Pages (from-to)1276-1288
Number of pages13
Issue number4
Publication statusPublished - 12 Feb 2002
Externally publishedYes

Cite this