International Journal of Science and Technology

International Journal of Science and Technology>> Volume 7, Number 6, June 2017

International Journal of Science and Technology


Ionic Interaction of Transition Metal Salts with Polyvinyl Alcohol-Borax-Ethyl Acetate Mixtures

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Author Rehana Saeed, Summyia Masood, Zain ul Abdeen
On Pages 132-142
Volume No. 3
Issue No. 2
Issue Date February, 2013
Publishing Date February, 2013
Keywords Polyvinyl alcohol, Borax, Crosslinking, Conductivity, Transition metal salts


Abstract

The effect of crosslinking agent (borax) on the interaction of transition metal salt with polyvinyl alcohol was analyzed in liquid and solid form by conductometric and FTIR spectroscopy. The specific conductance of transition metal salts i.e., CoSO4.7H2O, NiSO4.6H2O, CuSO4.5H2O and ZnSO4.7H2O at different temperatures were measured, in aqueous polyvinyl alcohol, in aqueous ethyl acetate, and in mixed solvent systems of aqueous polyvinyl alcohol + borax + ethyl acetate. The experimental data was used to evaluate the interactions between transition metal salt and polymeric solvent system in the presence of crosslinking agent (borax) by conductometric method and FTIR analysis. It was observed that the values of in mixed solvent systems were greater than in aqueous polyvinyl alcohol and aqueous ethyl acetate. It was also investigated through conductometric data that the association of transition metal salt with polymeric solvent was favorable in the presence of crosslinking agent. The association of crosslinking complexes of transition metal salts with polyvinyl alcohol in the presence of crosslinking agent was found to be in the order of Co (II) > Cu (II) > Ni (II) Zn (II) which was further confirmed by FTIR analysis of complexes through KBr sampling technique.

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