Density and Morphological Properties of Some Reinforced Polymers

The morphology of some reinforced blends of Polystyrene (PS) and Polyvinyl Acetate (PVAc) were estimated by density measurements, showing a definite pattern except that the filler composition increases the densities of the blends with 30/70, 20/80 and 10/90, PS/PVAc having highest values than other compositions. Also, photomicrographs of the different blends show a two phase system appearing bright (PVAc phase) and the other appearing black (PS phase) in virtually all the micrographs, even though the heterogeneity due to phase inversions is relevant for some compositions. For some composition a domain distribution shows considerable miscibility within the range of compositions. KEYWORDS: Phase inversions, domain distribution, miscibility, phase system

The Swelling Behaviour of Polystyrene (PS)/ Polyvinylacetate (Pvac) Blends in Different Solvents and the Effects of Ą-Cellulose used as Filler on the Electrical Conductivity

The effect of the variation of the type of solvent responsible for the differences in the swelling kinetics of Polystyrene (PS) and Polyvinyl acetate (PVAc) blends was studied. The results showed that the nature of solvent control or affects the degree of swelling. Also, 1-V characteristics attemperature range of 323-363K shows promising semi conducting ability which appreciated with amount of filler in the polymer-polymer matrix.Keywords: Swelling behavior, Polystyrene (PS) - Polyvinyl acetate (PVAc)  blends, electrical conductivity, filler compositio