Abstract
Partially phosphorylated polyvinyl alcohol–aluminium phosphate was synthesised through continuous stirring and condensation at 80°C. The compositions of the resulting phosphorylated polyvinyl alcohol–aluminium phosphate samples were varied, by adjusting the ion ratio and concentration of complex forming additives in the electrolyte solution. The as-synthesised phosphorylated polyvinyl alcohol–aluminium phosphate was then subjected to various chemical, thermal and structural characterisations. Fourier transform infrared studies show the bonding between phosphorylated polyvinyl alcohol and ALPO4 at phosphate containing group. Differential scanning calorimetric studies show that Tg, Tm and degree of crystallinity increase as ALPO4 filler was added to the system. Electrochemical impedance spectroscopy analysis shows good promising new inhibitor material for mild steel immersed in NaCl medium.
Acknowledgements
This work was financially supported by UM PPP Grant (PS115-2010B and PV129/2012A) and UM High Impact Research Grant (UM. C/625/1/HIR/086). The authors also appreciate the allowance and leave by University Kuala Lumpur. The authors gratefully acknowledge both on financial support.