화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.45, No.1, 68-78, January, 2021
DOI10.7317/pk.2021.45.1.68  Export Citation
식물성 기름/용매 분리를 위한 Polyaniline-Polyimide 박막 복합 Membrane의 합성과 특성 분석
Synthesis and Characterization of Polyaniline-Polyimide Thin-film Composite Membranes for Vegetable Oils/Solvent Separation
Naveed Shahzad Ali, Abdul Ghaffar†, Asif Ali Qaiser1, Muhammad Ahmad1, and Khurram
  • Department of Chemistry, University of Engineering and Technology, Lahore-54890, Pakistan
  • 1Department of Polymer and Process Engineering, University of Engineering and Technology, Lahore-54890, Pakistan
E-mail:
The recovery of solvents from the extracted oils using conventional thermal separation processes i.e. distillationor evaporation is often an energy-intensive process. To provide an energy-efficient alternative, an organic solvent nanofiltration thin-film composite membrane was prepared by depositing a thin layer of polyaniline (PANI), a selective layer, via interfacial polymerization on a crosslinked polyimide (XPI), a base ultrafiltration support membrane, to provide selective transport of constituents of a miscella. The membrane was characterized by microscopic, spectroscopic, and thermal analysis. The evaluation of the separation performance was carried out by a dead-end stirred cell using three vegetable oils. For sunflower, corn, and castor oil/n-hexane mixtures, the membrane resulted in a % rejection of 50, 56, and -44, respectively. A comparison of mass flux and rejection of corn and castor oils suggests that the PANI/XPI membranes showed a strong ion-exchange behavior significantly recognizing charge macromolecules due to the presence of charged emeraldine PANI.
Keywords:organic solvent nanofiltration;thin-film composite membrane;interfacial polymerization;crosslinking;vegetable oil/solvent separation
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