Research Journal of Applied Sciences
Kinetic Studies on Polyesterification of Unsaturated Oils and Diacids in the Alcoholysis Process
Authors : Okon D. Ekpa and Ibanga O. Isaac
Abstract: Polyesterification of unsaturated oils-coconut, soybean and
palm kernel oils with glycerol and phthalic anhydride was investigated at 280°C.
The oil content for the three resin samples was 60% each. The kinetic behaviour
of the polyesterification and the resulting alkyd resins, were studied as a
function of conversion and the reaction time. The relationship between the degree
of polymerization, 
and reaction time show that the formation of long oil alkyds of coconut, soybean
and palm kernel oils follows a second order kinetics with slight deviation from
linearity at the onset of the reaction. This deviation suggests the occurrence
of chain branching at relatively short intervals along the polymer chain.
How to cite this article:
Okon D. Ekpa and Ibanga O. Isaac, 2009. Kinetic Studies on Polyesterification of Unsaturated Oils and Diacids in the Alcoholysis Process. Research Journal of Applied Sciences, 4: 125-128.