Volume No. 7 Issue No.: 3 Page No.: 1183-1192 Jan. - Mar.2013

 

SYNTHESIS, CHARACTERIZATION, MORPHOLOGY, THERMAL, ELECTRICAL AND CHELATION ION-EXCHANGE PROPERTIES OF A COPOLYMER RESIN

 

Gurnule Wasudeo B.,*1 Makde Charulata S. and Ahmed Mudrika2

Gurnule Wasudeo B.,*1 Makde Charulata S. and Ahmed Mudrika2

 

Received on : August 10, 2012

 

ABSTRACT

 

A 2,4-Dihydroxypropiophenone-Adipamide-Formaldehyde (2,4-DPAF) copolymer resin was synthesized by an eco-friendly technique using hydrochloric acid as a reaction medium. The 2,4-DPAF copolymer was characterized on the basis of elemental analysis, ultraviolet-visible, FTIR , 13C NMR, 1H NMR, viscosity and average molecular weight. The physicochemical parameters have been evaluated for the copolymer resin. The kinetic parameters such as energy of activation and the order of reaction have also been evaluated on the basis of the thermogravimetric data using Freeman-Carroll method. The surface morphology of the copolymer resin was examined by scanning electron microscopy and it established the transition state between crystalline and amorphous nature. The color of the copolymer resin was confirmed by optical photograph. The electrical property of the copolymer resin showed an appreciable change in the conductivity of the resin at various concentration and temperature. One of the important applications of these types of polymers is their capability to act as chelating ion-exchangers. The chelating ion-exchange property of the copolymer showed a powerful adsorption towards specific metal ions like Cu(II), Ni(II), Zn(II), Pb(II) and Fe(III). A batch equilibrium method was adopted to study the selectivity of the metal ion uptake involving the measurement of the distribution of the given metal ion between the polymer sample and a solution containing the metal ion over a wide range of concentrations and pH of different electrolyte.

 

Keywords : Copolymer, Thermal analysis, Ion-exchangers, Distribution ratio, Metal ion uptake, Morphology

 

 

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