Intermolecular interactions in target organophilic pervaporation through the films of amorphous Teflon AF2400

✍ Scribed by A. Polyakov; G. Bondarenko; A. Tokarev; Yu. Yampolskii

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 493 KB
• Volume: 277
• Category: Article
• ISSN: 0376-7388
• DOI: 10.1016/j.memsci.2005.10.017

✦ Synopsis

Organic-organic pervaporation was studied for high free volume material-amorphous Teflon AF2400 (copolymer of 2,2-bis-trifluoromethyle-4,5-difluoro dioxole and tetrafluoroethylene). Individual organic components-acetone (A), chloroform (Ch) and methanol (M) that are capable of forming azeotrope mixtures as well as binary mixtures A-Ch and M-Ch were tested as penetrants. The process was studied at different temperatures (10-50 • C) over a wide range of composition of mixtures (10-90%). Evidence of formation of associates between the components in the mixtures in the liquid phase and during mass transfer through the films were obtained. IR spectra and quantum-chemical calculations supported these conclusions.