کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
626919 1455456 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluations of polyelectrolyte multilayer membranes assembled by a dynamic layer-by-layer technique
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Evaluations of polyelectrolyte multilayer membranes assembled by a dynamic layer-by-layer technique
چکیده انگلیسی

Self-assembly of polyelectrolyte multilayer membranes (PEMMs) by using dynamic layer-by-layer (LBL) adsorption technique was conducted in this study. The polyethyleneimine (PEI) and polyacrylic acid (PAA) were alternatively deposited on the hydrolyzed polyacrylonitrile (PAN) ultrafiltration membranes under a pressure of 0.1 MPa. The changes of membrane surfaces were observed by using atomic force microscopy. It was found that the regularity of the PEMMs was enhanced after the dynamic LBL assembly. The pervaporation separation behavior of various alcohol/water mixtures with the alcohols being t-butanol, 2-propanol and ethanol are compared with a relatively wide range of feed temperature and concentration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 234, Issues 1–3, 31 December 2008, Pages 300-306