کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10146285 | 1646400 | 2018 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Crosslinked PVDF-membranes for solvent resistant nanofiltration
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Crosslinked poly(vinylidene difluoride) (PVDF) nanofiltration membranes were prepared and tested for solvent resistant nanofiltration (SRNF) and solvent tolerant nanofiltration (STNF, i.e. in solvent/water media) applications. The performance of the membranes was assessed by filtering ethanol (EtOH), iso-propanol (iPrOH), acetonitrile (ACN), dimethylformamide (DMF) or toluene (Tol) solutions containing Rose Bengal (RB), a 1017â¯Da solute. During these consecutive filtrations, the membranes displayed a solvent activation effect which was characterised by TEM, ATR-FTIR and via intermediate EtOH filtrations. This solvent activation resulted in a more permeable membrane (by a factor of 11), without loss in retention. Drying the membranes from MeOH resulted in a further increase of the RB retention in ACN and Tol to 98%. The stability of the membranes was characterised using SEM, weight loss analysis and ATR-FTIR. In STNF, a 99% RB retention was achieved from a 1:4 DMF/water mixture.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 566, 15 November 2018, Pages 223-230
Journal: Journal of Membrane Science - Volume 566, 15 November 2018, Pages 223-230
نویسندگان
Matthias Mertens, Cédric Van Goethem, Marloes Thijs, Guy Koeckelberghs, Ivo F.J. Vankelecom,