Author(s): KONG Minghua, WU Lianying, XU Xianzhen, HU Yangdong, School of Chemistry and Chemical Engineering, Ocean University of China
Pages: 4446-4451
Year: 2015 Issue:  11
Journal: Journal of Chemical Industry and Engineering(China)
Keyword:  kinetics modeling; polymerization; esterification; tetrabromo phthalic anhydride; maleic anhydride;
Abstract: Polyesterifications of ethylene glycol(EG) with maleic anhydride(MA) and tetrabromo phthalic anhydride(TBPA) without foreign acid were carried out under constant reaction temperatures of 162—192℃(rather than at the constant oil-bath temperature) and at different molar ratios of diol to diacid of 1.2—1.8(MA/EG). The different combinations of the reaction order on the basis of Show-an Chen model were discussed. 1-1 model can describe experimental results very well, and kh[H2O] was greater than zero. The reaction rate constants for both systems were calculated. Besides, It was found that the final COOH conversion was increased with increasing reaction temperatures and molar ratios of diol to diacid.