Abstract
Polyphenyl ester microcapsules were prepared by the interfacial polycondensation reactions between each of 2, 2-bis (4-hydroxyphenyl) propane and 4, 4'-dihydroxydiphenyl sulfone and each of p-phthaloyl dichloride and sebacoyl dichloride in the presence of alkali under various conditions. The percentage of reacted bisphenols, and the size distribution and mean diameters of the microcapsules formed were determined and factors affecting them were studied. The size distribution of the microcapsules was found to depend strongly on chemical structure of the reactants used. This was plausibly explained by taking account of the percentage of reacted bisphenols with the acid dichlorides. The mean diameters varied with the percentage of reacted bisphenols in a way similar to that for the size distribution.
