Synthesis and Characterization of Polyaniline-Polyimide Thin-film Composite Membranes for Vegetable Oils/Solvent Separation

Naveed Shahzad Ali; Abdul Ghaffar; Asif Ali Qaiser; Muhammad Ahmad; Khurram

doi:10.7317/pk.2021.45.1.68

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자료유형: 학술저널

저자정보: Naveed Shahzad Ali (University of Engineering and Technology) Abdul Ghaffar (University of Engineering and Technology) Asif Ali Qaiser (University of Engineering and Technology) Muhammad Ahmad (University of Engineering and Technology) Khurram (University of Engineering and Technology)

저널정보: 한국고분자학회 폴리머 폴리머 제45권 제1호

발행연도: 2021.1

수록면: 68 - 78 (11page)

DOI: 10.7317/pk.2021.45.1.68

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The recovery of solvents from the extracted oils using conventional thermal separation processes i.e. distillation or 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.

#organic solvent nanofiltration #thin-film composite membrane #interfacial polymerization #crosslinking #vegetable oil/solvent separation

참고문헌 (56)

참고문헌 신청

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Nene, S.; Patil, G.; Raghavarao, K. Membrane Distillation in Food Processing. In Handbook of Membrane Separations; CRC Press: Boca Raton, USA, 2008; 513-551.

Schuur, B.; Brouwer, T.; Smink, D.; Sprakel, L. M. J. Green Solvents for Sustainable Separation Processes. Curr. Opin. Green Sustain. Chem. 2019, 18, 57-65.

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