کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7044067 1456926 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of polycation structure on the fabrication of polyelectrolyte multilayer hollow fiber membranes for loose nanofiltration applications
ترجمه فارسی عنوان
اثر ساختار پلیکاتی بر ساخت غشاهای فیبر توخالی پلی یک الکترولیت چند منظوره برای برنامه های کاربردی نانوفیلتراسیون شل
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی
Polyelectrolyte multilayer (PEM) membranes were fabricated by using a polycation with a long pendant group in order to prepare loose nanofiltration membranes. Poly(2-methacryloxyethyltrimethylammonium bromide)/poly(styrene sulfonate) multilayer membranes were prepared on the lumen side of polyethersulfone hollow fiber membranes with a dynamic coating method and compared to identically prepared poly(diallyldimethylammonium chloride)/poly(styrene sulfonate) multilayer membranes to observe how the different polycation structures affect membrane properties. Both membranes were evaluated in terms of their water permeability, rejection of MgSO4, rejection of neutral polyethylene glycol model compounds, and stability against sodium hypochlorite at pH 8.0. Poly(2-methacryloxyethyltrimethylammonium bromide)-based membranes with loose nanofiltration properties and high water permeability were successfully fabricated. However, they degraded rapidly under sodium hypochlorite treatment, whereas the poly(diallyldimethylammonium chloride)-based membranes showed no significant degradation until after 50,000 ppm·h of sodium hypochlorite treatment. Despite the rapid degradation of poly(2-methacryloxyethyltrimethylammonium bromide)-based multilayers under the sodium hypochlorite treatment, the results show that choosing polyelectrolytes with appropriate side group structures can be attractive when designing PEM membranes with membrane properties in the loose nanofiltration range.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 194, 3 April 2018, Pages 141-148
نویسندگان
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