Morphology and dynamic-mechanical properties of PVC/NBR blends reinforced with two types of nanoparticles

Abstract

This article relies on the effect of two types of nanoparticle on morphology and dynamic-mechanical properties of polyvinyl chloride (PVC)/acrylonitrile butadiene rubber (NBR) blends. The results of mechanical investigation revealed that tensile strength and modulus of PVC/NBR nanocomposites reinforced with 1 phr of single-walled nanotube (SWNT) are very close to the case of reinforced with 5 phr of nanoclay. The outcomes of dynamic-mechanical properties revealed that the storage modulus increases with the addition of nanoparticles and the intensity of tan δ get reduced, in two cases. Morphological investigation of nanocomposites was determined by scanning and transmission electron microscopy. In the case of PVC/NBR/nanoclay, fracture surface of specimens were much rough while the fracture surface of virgin PVC/NBR was very smooth. In PVC/NBR/SWNT nanocomposites, with introducing of carbon nanotubes to polymer matrix, dispersion and distribution of NBR as minor phase in PVC as matrix got improved.

Keywords

Polyvinyl chloride/acrylonitrile butadiene rubber blends single-walled nanotube nanoclay morphology mechanical properties

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