Composites based on a commercial grade polystyrene (PS) resin containing non commercial perovskite particles were prepared by melt mixing and analyzed in terms of mechanical properties, dynamic-mechanical behavior and morphology. In particular, with the aim to study the influence of the filler size on the ultimate properties of PS based composites micro- and nano-sized perovskite La0.5Sr0.5MnO3 crystal particles, synthesized by using an efficient and rapid microwave-assisted hydrothermal route, were considered.Measurements of flexural parameters such as modulus and strength by static tests and storage modulus and damping factor by dynamic-mechanical evaluations showed better performance for nanofilled systems with respect to the ones containing micro particles, with the same filler content.Mechanical evidences were explained also by morphological observations from which a different level of filler dispersion seems to be obtained with the organization of perovskite nanosized crystals in superstructures able to support viscoelastic results. © 2012 Elsevier B.V.

Mechanical and dynamic-mechanical behavior and morphology of polystyrene/perovskite composites: Effects of filler size / Russo, Pietro; Acierno, Domenico; Rosa, Roberto; Leonelli, Cristina; Corradi, Anna; Rizzuti, Antonino. - In: SURFACE & COATINGS TECHNOLOGY. - ISSN 0257-8972. - ELETTRONICO. - 243:(2014), pp. 65-70. [10.1016/j.surfcoat.2012.03.030]

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