• Dr. Balachandran S
• Jeena John
• Sudha Devi R

Spiroborate ester of curcumin with malonic acid was synthesized by condensation of curcumin, boric acid and malonic acid. The synthesized complex was characterized by different spectral techniques. The isothermal thermogravimetric method was used to study the thermal decomposition of spiroborate ester of curcumin with malonic acid at the heating rate of 10 °C/min in nitrogen atmosphere. Coats Redfern method was used to study the order of thermal degradation. Freeman Carrol, Coats Redfern and Sharp Wentworth method were used to calculate the thermal activation energy, entropy change, free energy change and frequency factor. The kinetic parameters calculated using above mentioned methods is in good agreement with each other. The kinetic parameters of this complex were compared with those reported for similar spiroborate esters in literature in order to study the effect of lactone ring in the thermal stability of spiroborate esters.

Spiroboronate esters; thermogravimetry; order of thermal decomposition; activation energy.

"Kinetic analysis of thermal decomposition of spiroborate ester of curcumin with malonic acid", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.799-806, August-2018, Available :http://www.jetir.org/papers/JETIR1808269.pdf

"Kinetic analysis of thermal decomposition of spiroborate ester of curcumin with malonic acid", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp799-806, August-2018, Available at : http://www.jetir.org/papers/JETIR1808269.pdf