SWELLING AND WATER SORPTION OF POLYCHLOROPRENE

The interaction of a polychloroprene-based rubber lining used in corro sion protection with organic and aqueous media was investigated, For t he organic solvents the solubility parameter proved to be a useful too l to explain qualitatively the strong variability in the change in wei ght due to swelling, In aqueous solutions of well dissolved electrolyt es, water sorption is always lower than in distilled water, In ammonia and hydrochloric acid of high concentration however, the changes in w eight are more pronounced, Thermoanalytical measurements show that in dependence of the water concentration within the solid, different stat es of sorbed water could be distinguished.