کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5206292 1502957 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental contribution to the understanding of transport through polydimethylsiloxanenanofiltration membranes: Influence of swelling, compaction and solvent on permeation properties
ترجمه فارسی عنوان
سهم تجربی در درک حمل و نقل از طریق غشاهای پلی متیل سیلوکسانن انفیلتراسیون: تأثیر تورم، تراکم و حلال بر خواص نفوذ
کلمات کلیدی
نانوفیلتراسیون حلال آلی، پلی متیل سیلوکسان، خواص وابسته به حلال، تورم تحت فشار، پدیده حمل و نقل،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
This study aims to better understand the permeation properties of polydimethylsiloxane (PDMS) membranes. The compressibility and nanofiltration fluxes were measured for swollen PDMS films using several solvents at applied pressures ranging from 5 to 50 bar. The degree of swelling varied according to the solvent and the pressure applied. To show the correlation between the behaviour of the swollen PDMS under pressure and its permeation performance, the thickness reduction of the membrane was mimicked using uniaxial compression tests. The evolution of the nanofiltration flux as a function of the transmembrane pressure proved to be non-linear. Linearization was achieved by taking into account both the swelling and the thickness reduction previously measured, confirming that these phenomena may have occurred during the nanofiltration experiments. Moreover, the solvents' viscosity and affinity for the polymer were confirmed to have a great influence on their ability to permeate the membrane. Finally, employing the most commonly used models, a study of transport through the membrane led to the conclusion that the experimental results were in agreement with the hydraulic theory of transport.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 33, February 2014, Pages 88-96
نویسندگان
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