کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
639023 1456187 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of ethanol on the permeability of block copolymer vesicle membranes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
The effect of ethanol on the permeability of block copolymer vesicle membranes
چکیده انگلیسی

Membrane permeability of dispersed block copolymer vesicles is studied in the equilibrium state using pulsed field gradient nuclear magnetic resonance spectroscopy. It is found that the permeability for water molecules strongly depends on the ethanol content in the dispersion: an increase of the ethanol concentration from 0 to 40 vol% leads to a decrease of the average residence time by a factor of two. The phenomenon is completely reversible as the subsequent reduction of the ethanol concentration leads to the original permeability characteristics. Hence, it can be used to reversibly control the permeability of vesicle membranes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 284, Issues 1–2, 1 November 2006, Pages 1–4
نویسندگان
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