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      https://www.ias.ac.in/article/fulltext/boms/026/02/0221-0225

    • Keywords

       

      Alkoxide; viscosity; surface tension; binders; morphology.

    • Abstract

       

      The synthesis of titania membrane through sol–gel route involves hydrolysis of alkoxide, peptization of hydrous oxide of titanium to obtain a sol, adjustment of the sol viscosity by including a binder and filtration of the viscous sol through a microporous support, gelation and sintering to desired temperature. The binder plays an important role in that it not only helps in adjustment of sol viscosity but also helps in binding the sol particle with porous support. Here a comparative study on the role of different binders, viz. polyvinyl alcohol, polyethyleneimine, polyacrylamide, effect of their viscosity and surface tension effect on the morphology of the titania membrane is presented. The results show that among the three binders studied polyvinyl alcohol gave rise to membranes of desired characteristics when the sol viscosity was 0.08 pa.s.

    • Author Affiliations

       

      K S Seshadri1 M Selvaraj2 R Kesava Moorthy3 K Varatharajan3 M P Srinivasan4 K B Lal1

      1. Centralised Waste Management Facility, Bhabha Atomic Research Centre Facility, Kalpakkam 603 102, India
      2. Anna University, Chennai 600 025, India
      3. Materials Science Department, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India
      4. Water and Steam Chemistry Department, Bhabha Atomic Research Centre Facility, Kalpakkam 603 102, India
    • Dates

       
  • Bulletin of Materials Science | News

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