PROPERTIES OF BLENDS PREPARED FROM SURFACE-MODIFIED LOW-DENSITY POLYETHYLENE AND POLY(VINYL CHLORIDE)

Improvement of adhesion between low-density polyethylene (LDPE) and po ly(vinyl chloride) (PVC) in their blends was attempted by plasma modif ication of their surfaces. A series of different plasma treatments, vi nyl chloride or carbon tetrachloride plasma for PE and acetylene plasm a for PVC, were employed. In addition, an oligomeric copolymer of PE-V C was also tested in the blend. After modification, different degrees of improvement were obtained in mechanical properties, ranging from sl ight for acetylene plasma-modified samples to high for the vinyl chlor ide plasma-modified samples and samples with added oligomeric copolyme r.