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      https://www.ias.ac.in/article/fulltext/pram/063/02/0277-0283

    • Keywords

       

      Block copolymer; light scattering; small-angle neutron scattering; PACS Nos; 61.12.Ex; 83.85.Jn; 82.70.Uv

    • Abstract

       

      A room temperature sphere-to-rod transition of the polyethylene oxide-polypropylene oxide-polyethylene oxide-based triblock copolymer, (PEO)20(PPO)70 (PEO)20 micelles have been observed in aqueous medium under the influence of ethanol and sodium chloride. Addition of 5–10% ethanol induces a high temperature sphere-to-rod transition of the micelles, which is brought to room temperature upon addition of NaCl. The inference about the change in the shape of the micelles has been drawn from small-angle neutron scattering (SANS) and viscosity studies.

    • Author Affiliations

       

      R Ganguly1 V K Aswal2 P A Hassan1 I K Gopalakrishnan1 J V Yakhmi3

      1. Novel Materials and Structural Chemistry Division, Bhabha Atomic Research Centre, Mumbai - 400 085, India
      2. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai - 400 085, India
      3. TP&PED, Bhabha Atomic Research Centre, Mumbai - 400 085, India

    • Dates

       
      Published
      August 2004

  • Pramana – Journal of Physics | News

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