کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5434805 1509146 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Poly(vinylidene difluoride)/poly(tetrafluoroethylene-co-vinylpyrrolidone) blend membranes with antifouling properties
ترجمه فارسی عنوان
پلی وینیلیدین دی فلوئورید / پلی (تترا فلوئور اتیلن و وینیل پریرولیدون) مخلوط غشاء با خواص ضد انحلال
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
چکیده انگلیسی


- A novel amphiphilic copolymer P(TFE-VP) was used to blend with PVDF to fabricate hydrophilic, antifouling membranes.
- The effect of P(TFE-VP) blend ratio and TFE/VP ratio on the performance of blend membranes was investigated.
- Compared with PVP, the stability of P(TFE-VP) in PVDF membrane improved and hence long-term hydrophilicity could be ensured.

To inhibit fouling phenomenon in membrane process, a new amphiphilic copolymer, poly(tetrafluoroethylene-co-vinylpyrrolidone) (P(TFE-VP)), was blended with poly(vinylidene difluoride) (PVDF) to fabricate a series of antifouling membranes via non solvent induced phase separation (NIPS) method. The effect of copolymer blend ratios and TFE/VP ratios on membrane properties were evaluated, and the stability of P(TFE-VP) in PVDF membrane was studied. The membrane morphology was controlled by adjusting polymer concentration in dope solution, such that all membranes have similar pore size and density, as well as pure water permeability. In evaluating the effect of TFE/VP ratios, the content of VP in dope solutions was also adjusted to allow a fair comparison. We found that for P(TFE-VP) with a higher VP content, adsorption of BSA on polymer film was negligible. Higher blend ratios of this copolymer resulted in higher surface VP content and better hydrophilicity, but antifouling performance ceased to improve when blend ratio was larger than 1:9 (copolymer:PVDF). Meanwhile, a lower VP content in copolymer resulted in inferior hydrophilicity and severe fouling of the blend membranes. It was also proved that comparing with PVP homopolymer, P(TFE-VP) had satisfying stability inside PVDF membrane.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 75, 1 June 2017, Pages 79-87
نویسندگان
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