Cohesive energy densities of high polymers. Part I. Determination of cohesive energy density from swelling measurements

Swelling measurements with natural rubber, polydimethylsiloxane, hydropolybutadiene and polyurethane were made using a large number of liquids. The solubility parameters of these polymers were calculated, using the method suggested by GEE. A critical appraisal of the previous work on swelling has been reported. It is concluded that in view of the unsatisfactory position of the theory of solution, choice of solvents is very important while trying to estimate solubility parameter of the polymer from such comparative studies as swelling measurement etc.