Morphology and Mechanical Properties of NBR/PVC Hybrid Nanocomposites

In this present work NBR/PVC conventional composite containing 70phr carbon black (CB) is taken for study. In order to reduce the utilization of CB, new hybrid nanocomposites containing varied content of both CB(40phr -55phr) and graphenenanoplatelets (GNP) (3phr-9phr) were developed by melt-mixing on a two roll mill and their morphology and mechanical properties were tested and compared with conventional composite. FESEM studies evident that the formation of exfoliated structures of GNP and formation of local CB-GNP hybrid filler network which ensures proper and compatible mixing in the composites. It is also found that mechanical properties such as tensile strength, elongation at break, swelling resistance, hardness and compression set increases with increase in GNP content from 3 to 6phr and whereas tensile modulus and tear strength increases with increase in GNP content from 3 to 9phr. Further the developed NBR/PVC hybrid nanocompositescontaining 55phr of CB and 3phr of GNP exhibited an improvement of 6.8%, 27.9% +1 shore A and 4.1% in tensile strength, tensile modulus, hardness, swelling resistance in comparison to the conventional composite containing 70phr CB. The better per