Dynamic mechanical properties of PVC compositions plasticized by cyclо carbonate

Oligomers with cyclocarbonate and epoxy groups present a special interest as modifiers of polyvinyl chloride (PVC). They are able to form hydrogen and physical bonds both with polyvinyl chloride and plasticizer EDOS. As a result, these modifiers reduce the migration of EDOS from the composition for the manufacture of linoleum. The influence on the relaxation properties of plasticized PVC compositions of the two types of modifiers with cyclocarbonate groups (laprolat and cyclocarbonate of epoxidized vegetable oils) was investigated by method of dynamic mechanical analysis. It was shown that cyclocarbonates provide a plasticizing effect on PVC and increase its modulus of elasticity