کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4989002 1455966 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ethylene glycol as bore fluid for hollow fiber membrane preparation
ترجمه فارسی عنوان
اتیلن گلیکول به عنوان مایع غلیظ برای آماده سازی غشای فیبر توخالی
کلمات کلیدی
HAc؛ استیک اسید؛ BSA؛ آلبومین سرم گاو DEG؛ دی اتيل گليكول؛ DMAc؛ (2-دی متیل آمینو) اتیل متاکریلات و کوتی بوتیل متاکریلات)؛ به عنوان مثال؛ اتیلن گلیکول؛ FESEM؛ میکروسکوپ الکترونی اسکن خروجی میدان؛ MWCO؛ کاهش وزن مولکولی؛ NG؛ nucleatio
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی


- Ethylene glycol as bore fluid for hollow fiber preparation.
- Membranes with pores between 8 and 10 nm and permeance 370 L m−2 h−1  bar−1.
- Water permeance increase with ethylene glycol content.

We proposed the use of ethylene glycol and its mixture with water as bore fluid for the preparation of poly(ether imide) (PEI) hollow fiber membranes and compared their performance and morphology with membranes obtained with conventional coagulants (water and its mixture with the solvent N-methylpyrrolidone (NMP)). Thermodynamics and kinetics of the systems were investigated. Water and 1:1 water:EG mixtures lead to fast precipitation rates. Slow precipitation is observed for both pure EG and 9:1 NMP:water mixture, but the reasons for that are different. While low osmotic driving force leads to slow NMP and water transport when NMP:water is used, the high EG viscosity is the reason for the slow phase separation when EG is the bore fluid. The NMP:water mixture produces fibers with mixed sponge-like and finger-like structure with large pores in the inner and outer layers; and hence leading to a high water permeance and a high MWCO suitable for separation of large-sized proteins. As compared to NMP:water, using EG as bore fluid provides fibers with a finger-like bilayered structure and sponge-like layers near the surfaces, and hence contributing to the higher water permeance. It also induces small pores for better protein rejection.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 533, 1 July 2017, Pages 171-178
نویسندگان
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