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

fYear

2014

fDate

3-6 Sept. 2014

Firstpage

1986

Lastpage

1987

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2014 IEEE International

Conference_Location

Chicago, IL

Type

conf

DOI

10.1109/ULTSYM.2014.0494

Filename

6931798