Influência do tipo de agente de parti？？o da borracha nitrílica na obten？？o de blendas PVC/NBR

nitrile rubbers used in mixture with pvc resin are supplied in powder. this kind of nitrile rubber has a partitioning agent to avoid agglomeration in the particles during the transport and storage. in this study, the influence of the partitioning agent on the preparation of pvc/nbr blends was investigated. the mechanical properties of the blends were evaluated by tensile properties, tear strength and hardness. the pvc/nbr blends with partitioning agent of pvc showed an increase in the tensile stress and young's modulus compared to the pvc/nbr blends with partitioning agent of caco3. the morphology of the blends examined by scanning electron microscopy demonstrated the influence of the partitioning agent.