DOI: https://doi.org/10.15587/1729-4061.2014.29890

Influence of plasticizers and polystyrene modifiers nature on the properties of poly(vinylchloride) plastics and composites

Юрій Валерійович Ларук, Володимир Євстахович Левицький

Abstract


Based on the studies, the influence of plasticizer and polystyrene modifier nature on the physicomechanical, thermophysical and physicochemical properties of PVC plasticates was determined. With the increase in the polystyrene modifier content, the surface hardness, Vicat softening temperature and value of composites elasticity increases and the degree of plasticizer release decreases. This is achieved by directed influence of the nature and content of the modifier and plasticizer on the morphology of PVC plasticates with the formation of a denser fluctuation grid, which is caused by the redistribution of intermolecular interactions in the system. Growth of physicomechanical and thermophysical parameters of PVC composites with an increase in the content of polymer-containing fillers (polystyrene-magnetite materials and polymer-silicate composites) due to an increase in technological compatibility between the components and the formation of interfacial layers with the direct participation of the filler macromolecules was revealed.

It is shown that the directed introduction of polystyrene modifiers, fine polymer-containing fillers and diesterphthalic plasticizers allows to influence the morphology of PVC materials and, thus, achieve the desired set of physicomechanical, thermophysical and physicochemical properties of composites for a specific practical application.

Keywords


poly(vinylchloride); modification; polystyrene; polymer-silicate composite; plasticization; acrylonitrile-butadiene-styrene plastic; filler; dibutyl phthalate

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ISSN (print) 1729-3774, ISSN (on-line) 1729-4061