Author/Authors :
Singru، Rajesh Narayanrao نويسنده Department of Chemistry, Laxminarayan Institute of Technology, RTM Nagpur University, Nagpur – 440 010, India , , Khati، Vandana Arun نويسنده Department of Physics,Institute of Science, Nagpur, India , , Gurnule، Wasudeo Buburao. نويسنده Department of Chemistry, Kamla Nehru College, Nagpur – 440 009, India , , Zade، Anil Bhausaheb نويسنده Department of Chemistry, Laxminarayan Institute of Technology, RTM Nagpur University, Nagpur – 440 010, India , , Dontulwar، Jivan Ramanna نويسنده Priyadarshani Institute of Engeenearing and Technology, Nagpur-440 019, India ,
Abstract :
The title terpolymer (p-COF-II) synthesized by the condensation of p-Cresol
(p-C) and Oxamide (O) with Formaldehyde (F) in the presence of acid catalyst and using
2:1:3 molar proportions of the reacting monomers. The synthesized terpolymer resin then
characterized by elemental analysis and spectral studies like IR, 1H NMR, 13C NMR and
XRD. The morphology of synthesized terpolymer was studied by scanning electron
microscopy (SEM).The electrical property was measured over a wide range of temperature
(313-403K).The plot of log ? vs. 103/T of the resin is linear over a wide range of temperature
showing its semiconducting nature. The chelating ion-exchange study was carried out over a
wide pH range, shaking time and in media of various ionic strengths for seven metal ions Fe
(III), Cu (II), Ni (II), Co (II), Zn (II), Cd (II) and Pb (II) in the form of their metal nitrate
solutions. The terpolymer showed a higher selectivity for Fe (III), Cu (II), and Ni (II) ions.
Thermal study of the resin was carried out to determine its mode of decomposition and
thermal stability. By using data of thermogravimetry various kinetic parameter like frequency
factor (Z), entropy change (?S), free energy change (?F) and apparent entropy (S*) have
been determined using Freeman-Carroll method.
