화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.82, 164-172, February, 2020
DOI10.1016/j.jiec.2019.10.009  Export Citation
Preparation, characterization, and performance evaluation of sepiolite-based nanocomposite membrane for desalination
Samaneh Khodami, Shahram Mehdipour-Ataei, and Samal Babanzadeh†
  • Iran Polymer and Petrochemical Institute, P.O. Box 14965/115, Tehran, Iran
E-mail:
A novel polysulfone (poly-AF) and nanocomposite (poly-AF/Sep) membranes thereof were prepared successfully by incorporation of hydrophilic nanorods sepiolite into the polymeric matrixfor application in water desalination via reverse osmosis. A novel poly-AF was prepared using a new monomeric pyridine-based diol which itself was synthesized, characterized, and reacted with bi (4 fluorophenyl) sulfone as a dihalide monomer. To improve the hydrophilicity of poly-AF, 1, 3, 5, 7, and 10 wt% sepiolite nanorods were introduced into it by sonication device to achieve a homogeneous solution. Poly-AF and nanocomposite solutions with 30 wt% concentration were used to prepare flat membranes on polyester sheets by non-solvent induced phase inversion through immersion precipitation method. The separation performances of the pristine poly-AF and poly-AF/Sep membranes were studied using evaluation of pure water flux and salt rejection of NaCl. Optimal results of pure water flux of 40.0 L m-2 h-1 and salt rejection of 99.1% were obtained at 30 bar with cross-flow filtration technique. In addition, the surface of membranes properties was characterized by field emission scanning electron microscopy, transmission electron microscopy, and atomic force microscopy.
Keywords:Polysulfone;Sepiolite nanorod;Pyridine-based diol;Water desalination
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