Physical gels from poly(vinyl chloride): effect of solvent type

The gelation of poly(vinyl chloride) has been studied in homologous diesters and monoesters. The relation between the modulus, E, and the swelling degree, G v , at swelling equilibrium has been found to depend upon the solvent type. Two classes of universality have been found obeyins power laws: gels in monoesters, E= 24.5G v ∞ -2.72±0.1 kPa; gels in diesters, E= 18.6G v ∞ -1.54±0.1 kPa. Light scattering data on aggregates have also revealed two types of behavior depending upon whether diesters or monoesters are used