preparation and characterization of nano-porous polyacrylonitrile (pan) membranes with hydrophilic surface

نویسندگان

s. z. asadi

department of chemical engineering, college of engineering, tonekabon branch, islamic azad university, tonekabon, iran. e. shekarian

department of chemical engineering, college of engineering, azadshahr branch, islamic azad university, azadshahr, iran. a. h. tarighaleslami

department of process engineering, college of chemical engineering, mahshahr branch, islamic azad university, mahshahr, iran.

چکیده

polyacrylonitrile (pan) membranes with nano-porous surface and high hydrophilicity were fabricated by addition of polyoxyethylene (40) nonylphenyl ether (igepal) as an additive in the casting solution. the membranes were prepared from pan/igepal/1-methyl-2-pyrrolidone (nmp) via phase inversion induced by immersion precipitation technique. pure water was used as coagulation medium. the effects of adding igepal and the pan concentration on the morphology, wettability, and permeability of the prepared membranes were studied. the morphological studies were investigated by scanning electron microscopy (sem) and atomic force microscopy (afm). in addition, the wettability and permeability of membranes were examined by contact angel measurements and permeation experiments. the contact angle measurements indicate that the hydrophilicities of membrane enhanced by the addition of igepal surfactant and decreasing the pan concentration in the casting solution. according to sem and afm analysis, it was found that the addition of igepal and change concentration of polymer have a significant influence on structure of the membrane top surface and the sub-layer. in addition, it was found that decreasing the pan concentration and addition of igepal resulted in the formation of membranes with high permeability.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Preparation and characterization of nano-porous Polyacrylonitrile (PAN) membranes with hydrophilic surface

Polyacrylonitrile (PAN) membranes with nano-porous surface and high hydrophilicity were fabricated by addition of polyoxyethylene (40) nonylphenyl ether (IGEPAL) as an additive in the casting solution. The membranes were prepared from PAN/IGEPAL/1-Methyl-2-pyrrolidone (NMP) via phase inversion induced by immersion precipitation technique. Pure water was used as coagulation medium. The effects o...

متن کامل

Preparation and characterization of nano-porous Polyacrylonitrile (PAN) membranes with hydrophilic surface

Polyacrylonitrile (PAN) membranes with nano-porous surface and high hydrophilicity were fabricated by addition of polyoxyethylene (40) nonylphenyl ether (IGEPAL) as an additive in the casting solution. The membranes were prepared from PAN/IGEPAL/1-Methyl-2-pyrrolidone (NMP) via phase inversion induced by immersion precipitation technique. Pure water was used as coagulation medium. The effects o...

متن کامل

preparation and characterization of new co-fe and fe-mn nano catalysts using resol phenolic resin and response surface methodology study for fischer-tropsch synthesis

کاتالیزورهای co-fe-resol/sio2و fe-mn-resol/sio2 با استفاده از روش ساده و ارزان قیمت همرسوبی تهیه شدند. از رزین پلیمری resol در فرآیند تهیه کاتالیزور استفاده شد.

PREPARATION OF NANO PORE MORDENITE MEMBRANES

Abstract: Nano pore Mordenite membranes were prepared on the outer surface of ceramic tubular tubes via hydrothermal synthesis and evaluated for dehydration pervaporation of water unsymmetrical dimethylhydrazine UDMH mixtures. Highly water-selective mordenite membranes were prepared and the optimum reaction condition was found to be 24 h crystallization time and 170 °C crystallization temperatu...

متن کامل

Recent Progresses in Preparation and Characterization of RO Membranes

Reverse osmosis (RO) is a water purifcation technology that uses a semipermeable membrane to remove ions, molecules, and larger particles for the production of drinking water. The frst RO membrane for seawater desalination, wastewater treatment and other applications were made of cellulose acetate. But, the polyamide thin-flm composite membrane that can tolerate wide pH...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
international journal of nano dimension

جلد ۶، شماره ۳، صفحات ۲۱۷-۲۲۶

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023