화학공학소재연구정보센터
Chemical Engineering Journal, Vol.185, 347-351, 2012
Self-esterification of partially maleated castor oil using conventional and microwave heating
The self-esterification of partially maleated castor oil was studied using conventional and microwave heating. Reactions were followed by measuring the acid number and reaction products were characterized by FTIR and H-1-NMR. A kinetic model, that fit the experimental data, was found. The reaction was non-catalytic, first-order with respect to hydroxyl-groups concentration and first-order with respect to acid-groups concentration. This reaction proceeded more quickly when microwaves were used and showed the presence of non-thermal effects of microwave heating, which were evidenced by the 10% decrease in the activation energy and the 182% increase in the pre-exponential factor. (c) 2012 Elsevier B.V. All rights reserved.