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5168107 
Journal Article 
Ultrasonic properties of polystyrene-based composites 
Oral, I; Guzel, H; Ahmetli, G 
2012 
Yes 
Journal of Applied Polymer Science
ISSN: 0021-8995
EISSN: 1097-4628 
125 
2 
1226-1237 
English 
WOS:000302350300048 
In this study, first the pure polystyrenes (PS) with different molecular weights (350 x 103 and 500 x 103) have been modified by the chemical modification with succinic anhydride (SA), maleic anhydride (MA), and phthalic anhydride (PhA) and then the polystyrene based composites (CPS) prepared by addition of modified polystyrenes (MPS) into pure PS (with the molecular weight of 230 x 103) in weight % ratios of 90 : 10, 80 : 20, and 70 : 30. Ultrasonic measurements were performed on PS/MPS blends of different weight percent of MPSs by use of pulse echo method with 5-MHz frequency at room temperature. Elastic properties namely; longitudinal modulus (L), Young's modulus (E), bulk modulus (K) and shear modulus (G), Poisson's ratio (mu), and acoustic impedance (Z) were calculated from the ultrasonic velocities values measured and densities values obtained experimentally. Atomic force microscopy (AFM) has been used for determining the microstructure of composites. The variations of these parameters with increasing MPSs weight percentage content in PS/MPS from 10 to 30 have been discussed. (c) 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 
Polymer Science; Engineering; Materials Science; polystyrene, composites, ultrasound, elastic properties, compatibility; rubber blends, polymer blends, viscoelastic materials,; physical-properties, elastic properties, graft polyblends, diene rubber,; pmma blend, pulse-echo, compatibility