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      https://www.ias.ac.in/article/fulltext/boms/029/03/0261-0264

    • Keywords

       

      Polymer blend; ion irradiation; track etched membrane; ion current; gas separation.

    • Abstract

       

      Polymer blends of polycarbonate (PC) and polysulphone (PSF) having thickness, 27 𝜇m, are prepared by solution cast method. The transport properties of pores in a blend membrane are examined. The pores were produced in this membrane by a track etching technique. For this purpose, a thin polymer membrane was penetrated by a single heavy ion of Ni7+ of 100 MeV, followed by preferential chemical etching of the ion track. Ion permeation measurements show that pores in polymeric membrane are charged or neutralized, which depends upon the variation in concentration of the solvent. The 𝑉–𝐼 curve at concentration, N/10, shows that the pores are negatively charged, whereas at concentration, N/20, the linear nature of 𝑉–𝐼 curve indicates that the pores approach towards neutralized state and on further concentration, N/40, the pores become fully neutralized, consequently the rectifier behaviour of pores has been omitted.

      The gas permeability of hydrogen and carbon dioxide of this membrane was measured with increasing etching time. The permeability was measured from both the sides. Permeability at the front was larger than the permeability at the back which shows asymmetric behaviour of membranes.

    • Author Affiliations

       

      Kamlendra Awasthi1 Vaibhav Kulshreshtha1 B Tripathi1 N K Acharya1 M Singh1 Y K Vijay1

      1. Department of Physics, University of Rajasthan, Jaipur 302 004, India
    • Dates

       
  • Bulletin of Materials Science | News

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