• image 01
    Volume 1, No.1, 2012
  • image 02
    Volume 1, No.2, 2012
  • image 01
    Volume 1, No.3, 2012
  • image 02
    Volume 2, No.1, 2013
  • image 02
    Volume 2, No.2, 2013
  • image 02
    Volume 2, No.S1, 2013
  • image 02
    Volume 2, No.3, 2013
  • image 02
    Volume 2, No.4, 2013
  • image 02
    Volume 3, No.1, 2014
  • image 02
    Volume 3, No.2, 2014
  • Volume 3, No3
    Volume 3, No.3, 2014
  • Volume 3, No4
    Volume 3, No.4, 2014
  • Volume 4, No1
    Volume 4, No.1, 2015
  • Volume 4, No2
    Volume 4, No.2, 2015
  • Volume 4, No3
    Volume 4, No.3, 2015
  • Volume 4, No4
    Volume 4, No.4, 2015
  • Volume 5, No1
    Volume 5, No.1, 2016
  • image 01
  • image 02
  • Login|Register
  • Chem Sci Trans., 2013, 2(1),  pp 287-293  

    DOI:10.7598/cst2013.312

    Research Article

    Synthesis, Thermal and Electrical Properties of 2, 2-HBBF Copolymer Resin

  • SANJIOKUMAR S. RAHANGDALE and WASUDEO B. GURNULE
  • Department of Chemistry, Jagat Arts, Commerce and Indiraben Hariharbhai Patel Science College, Goregaon - 441 801, Maharashtra, India
    Department of Chemistry, Kamla Nehru Mahavidyalaya, Sakkardara Square, Nagpur - 440 009, Maharashtra, India
  • Abstract

    The copolymer (2, 2-HBBF) synthesized by the condensation of 2, 2-dihydroxybiphenyl (2, 2-HB) and biuret (B) with formaldehyde (F) in the presence of acid catalyst using 1:1:2 molar proportions of the reacting monomers. The thermogravimetric analysis of copolymer resin prepared in the present study has been carried out by non-isothermal thermogravimetric analysis technique in which sample is subjected to condition of continuous increase in temperature at linear rate. The advantage of Freeman-Carroll method is to calculate both the order of reaction (n) and energy of activation in one single stage by keeping heating rate constant. By using data of thermogravimetric analysis, various thermogravimetric parameters like frequency factor (Z), entropy change (ΔS), free energy change (ΔF) and apparent entropy (S*) have been determined using Freeman-Carroll method. The electrical properties of 2, 2-HBBF copolymers were measured over a wide range of temperature (303-423 K). From the electrical conductivity of these copolymers, activation energies of electrical conduction have been evaluated and values lies in the range 3.01x10-20 - 6.43x1020 J/K. On the basis of above studies, these copolymers can be ranked as semiconductors.

    Keywords

    Resin, Synthesis, Electrical conductivity, Thermal degradation

    This article has been viwed 2739 times

      

    Citations for this article 5

      

    Download Citations