Title :
Ultrasonic studies of onion-like carbons/polydimethysiloxane composites
Author :
Samulionis, V. ; Macutkevic, J. ; Banys, J. ; Belovickis, J. ; Shenderova, O.
Author_Institution :
Phys. Fac., Vilnius Univ., Vilnius, Lithuania
Abstract :
The temperature dependencies of longitudinal ultrasonic velocity and attenuation in polydimethysiloxane (PDMS) with onion-like carbons (OLC) composites have been measured. In the region of the glass transition the ultrasonic velocity dispersion and large ultrasonic attenuation maxima were observed. The positions of ultrasonic attenuation peaks were slightly shifted to higher temperatures after doping PDMS with OLC nanoparticles. A significant increase of ultrasonic attenuation with increasing OLC concentration was observed at room temperature and such behavior can be attributed to ultrasonic - OLC interaction in polymer matrix.
Keywords :
carbon; elastic waves; filled polymers; glass transition; nanocomposites; nanoparticles; particle reinforced composites; ultrasonic velocity; C; OLC doped PDMS; OLC nanoparticles; glass transition; longitudinal ultrasonic velocity; onion like carbon-polydimethysiloxane composites; onion like carbons composites; polymer matrix; temperature dependencies; ultrasonic attenuation maxima; ultrasonic studies; ultrasonic velocity dispersion; Acoustics; Attenuation; Glass; Nanoparticles; Polymers; Temperature dependence; Temperature measurement; OLC nanoparticles; polymer nanocomposites; ultrasonic attenuation;
Conference_Titel :
Ultrasonics Symposium (IUS), 2014 IEEE International
Conference_Location :
Chicago, IL
DOI :
10.1109/ULTSYM.2014.0494
