کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
626308 1455445 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A study on thermal effect on structure and transport properties of a composite lignosulfonated-polyamide/polysulfone membrane
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
A study on thermal effect on structure and transport properties of a composite lignosulfonated-polyamide/polysulfone membrane
چکیده انگلیسی

Changes in morphology and transport parameters for a composite lignosulfonate–polyamide/polysulfone membrane associated with temperature effects were studied. Pore size, pore density and porosity dependence with temperature (25 ≤ t (ºC) ≤ 93) was determined analyzing SEM micrographs, while diffusional permeability and electrical parameters (resistance and capacitance) were obtained from salt diffusion and impedance spectroscopy measurements carried out with the samples in contact with 0.01 M HCl solutions.Temperature seems to modify the structure of both the denser lignosulfonate contained top layer and the opener polysulfone support, but different temperature–membrane parameters relationships were obtained depending on the sublayer material, with changes around 40ºC for the lignosulfonated top layer and 80ºC for the polysulfonebased support. Permeability asymmetric degree for the different temperatures was also obtained.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 245, Issues 1–3, 15 September 2009, Pages 570-578