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Gas separation properties of swelled nanocomposite chitosan membranes cross-linked by 3-aminopropyltriethoxysilane

  • V Zargar
  • M Asghari
  • M Afsari
Original Paper

Abstract

Chitosan/APTEOS mixed matrix membranes with 5, 10, 20 wt% loading of APTEOS were synthesized using solution casting method to improve gas separation properties of membranes. Chitosan concentration was varied from 1 to 2.5 wt% to obtain best concentration of chitosan. CO2 and N2 permeabilities and CO2/N2 selectivity increased with feed pressure and APTEOS content up to 10 wt% and then decreased by the increase in APTEOS loading from 10 to 20 wt%. The membranes with 10 wt% content of APTEOS at 14 bar showed the best CO2 permeability and CO2/N2 selectivity of 79.3 barrer and 84.38, respectively. FTIR and SEM results revealed appropriate distribution of nanoparticles in the polymeric matrix, and AFM analysis showed that the roughness of the membrane surface increased significantly by APTEOS content.

Keywords

Chitosan Gas separation Nanocomposite membrane APTEOS Permeability 

Notes

Acknowledgements

The authors are grateful to the Energy Research Institute at University of Kashan for supporting this work.

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Copyright information

© Islamic Azad University (IAU) 2017

Authors and Affiliations

  1. 1.Separation Processes Research Group (SPRG), Department of EngineeringUniversity of KashanKashanIran
  2. 2.Energy Research InstituteUniversity of KashanKashanIran

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