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    • Keywords


      Cationic surfactant; montmorillonite; organoclay; thermal techniques.

    • Abstract


      The properties of the materials determine their potential applications. The aim of this article is to study the properties of the organoclays using simple and rapid technologies. Organoclays with different surfactant loadings (SL) were synthesized using an Argentine bentonite with a high content of montmorillonite (Bent) and hexadecyltrimethylammonium bromide as cationic surfactant. The samples were characterized using thermal techniques. The results revealed that the hydrophilicity of the organoclays decreases with increasing SL until the SL reaches 0.8 times the cation exchange capacity of the clay; and remains constant at a higher surfactant load. The stability of organoclays was inversely proportional to the SL of each sample. The layers showed a stabilization of approximately 40$^{\circ}$C for their structural transformation temperature, caused by the presence of the surfactant. In addition, at a SL $\lt$1.0 the surfactant presented a ‘liquid-like’ structure in the interlayer space, whereas at a SL $\gt$1.0 the structure was ‘solid-like’.

    • Author Affiliations



      1. INIQUI–CONICET (Instituto de Investigaciones para la Industria Química–Consejo Nacional de Investigaciones Científicas y Técnicas), A4408FVY Salta, Argentina
      2. Fac. Ingeniería, Universidad Nacional de Salta, A4408FVY Salta, Argentina
      3. Fac. Cs. Exactas, Universidad Nacional de Salta, A4408FVY Salta, Argentina
    • Dates

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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