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Improvement of hydrophilicity properties of thin-film-based PVDF membrane by plasma irradiation for use in desalination | ||
Journal of Interfaces, Thin Films, and Low dimensional systems | ||
دوره 6، شماره 2، فروردین 2023، صفحه 647-655 اصل مقاله (1.15 M) | ||
نوع مقاله: Original Article | ||
شناسه دیجیتال (DOI): 10.22051/jitl.2023.43992.1088 | ||
نویسنده | ||
Zeynab Kiamehr* | ||
Department of Physics, Tafresh University, Tafresh, Iran. | ||
چکیده | ||
Polyvinylidene Fluoride (PVDF) is one of the materials that has a great ability to form a membrane, but due to its hydrophobic nature, its use in nanofiltration membranes is problematic. The solution proposed to solve the hydrophobicity problem of PVDF is nitrogen plasma irradiation. In this research, the effect of modifying the surface characteristics of PVDF membrane by N2 plasma irradiation on filtration performance was investigated. For this purpose, the modified membranes were evaluated by SEM, FT-IR, AFM, and CA analyses and compared with the control membrane. By gradually increasing the applied power of the irradiated plasma on the surface of the membranes, the hydrophilic properties and performance of the modified membranes improved. The results indicate an improvement in the flux rejection and recovery rate in the modified membrane under N2 plasma irradiation with super hydrophilic properties compared to the pure PVDF membrane. Based on the results of the experiments, the best flux recovery rate of 11.8 and 94% rejection can be obtained for the irradiated membrane with an applied power of 120W. | ||
کلیدواژهها | ||
Surface modification؛ hydrophobic membrane؛ Plasma modification؛ polyvinylidene fluoride؛ Permeability-selectivity | ||
عنوان مقاله [English] | ||
بهبود خواص آب دوستی غشای PVDF مبتنی بر لایه نازک با تابش پلاسما برای استفاده در نمکزدایی | ||
نویسندگان [English] | ||
زینب کیامهر | ||
گروه فیزیک، دانشگاه تفرش، تفرش، ایران. | ||
چکیده [English] | ||
پلی وینیلیدین فلوراید (PVDF) یکی از موادی است که توانایی زیادی در تشکیل غشاء دارد، اما به دلیل آبگریز بودن، استفاده از آن در غشاهای نانوفیلتراسیون مشکل ساز است. راه حل پیشنهادی برای حل مشکل آب گریزی PVDF تابش پلاسمای نیتروژن است. در این تحقیق، تأثیر اصلاح ویژگیهای سطحی غشاء PVDF توسط تابش پلاسمای N2 بر عملکرد فیلتراسیون بررسی شد. برای این منظور، غشاهای اصلاح شده توسط آنالیزهای SEM، FT-IR، AFM و CA مورد ارزیابی قرار گرفتند و با غشای کنترل مقایسه شدند. با افزایش تدریجی قدرت اعمالی پلاسمای تابیده شده بر روی سطح غشاها، خواص آب دوست و عملکرد غشاهای اصلاح شده بهبود یافت. نتایج حاکی از بهبود در رد شار و نرخ بازیابی در غشای اصلاحشده تحت تابش پلاسمای N2 با خواص فوق آبدوست در مقایسه با غشای PVDF خالص است. بر اساس نتایج آزمایشها، بهترین نرخ بازیابی شار 8/11 و رد 94 درصد را میتوان برای غشای تابششده با توان اعمالی 120 وات بهدست آورد. | ||
کلیدواژهها [English] | ||
اصلاح سطح, غشای آبگریز, اصلاح پلاسما, پلی وینیلیدین فلوراید, نفوذپذیری-انتخاب پذیری | ||
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