ABSTRACT
Kreibich and Batzer used Fedors’ cohesive energy increment values in an extensive study of polymer glass transition temperatures, while Sammar and Nagaka applied the method to non-ionic surfactants. It should be noted that when central atoms contain more than one substituent the contributions of those groups to the cohesive energy are decreased by approximately 20%, while the contributions to the molar volume are increased by about 7%. Scatchard and Small observed that there are parallel linear relationships among several homologous series when the square root of the product of the molar volume and molar cohesion energy is plotted against the chain length. A novel correlation of cohesion energy parameters is based on the ratio of the sum of atomic weights of hetero atoms in the liquid molecule to the total molecular weight, and the ratio of the number of methyl or CF3 groups per molecule to the total number of carbon atoms per molecule.
