Putra, Erwin G. R. and Ikram, Abarrul and Bharoto, Bharoto and Santoso, E. and Fang, T. Chiar and Ibrahim, Noorddin M. M. and Mohamed, A. Aziz (2008) Fractal studies on titanium-silica aerogels using SMARTer. In: AIP Conference Proceedings. American Institute of Physics, USA, 130 -133 . ISBN 978-073540508-0
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Official URL: http://dx.doi.org/10.1063/1.2906047
Power-law scattering approximation has been employed to reveal the fractal structures of solid-state titanium-silica aerogel samples. All small-angle neutron scattering (SANS) measurements were performed using 36 meters SANS BATAN spectrometer (SMARTer) at the neutron scattering laboratory (NSL) in Serpong, Indonesia. The mass fractal dimension of titanium-silica aerogels at low scattering vector q range increases from -1.4 to -1.92 with the decrease of acid concentrations during sol-gel process. These results are attributed to the titanium-silica aerogels that are growing to more polymeric and branched structures. At high scattering vector q range the Porod slope of -3.9 significantly down to -2.24 as the roughness of particle surfaces becomes higher. The cross over between these two regimes decreases from 0.4 to 0.16nm-1 with the increase of acid concentrations indicating also that the titanium-silica aerogels are growing.
|Item Type:||Book Section|
|Additional Information:||ISBN: 978-073540508-0; International Conference on Neutron and X-ray Scattering 2007, ICNX 2007; Serpong and Bandung; 23 July 2007 through 31 July 2007|
|Uncontrolled Keywords:||aerogels, fractals, power-law scattering, SANS|
|Subjects:||Q Science > Q Science (General)|
Q Science > QC Physics
|Deposited By:||Liza Porijo|
|Deposited On:||09 Jun 2011 08:17|
|Last Modified:||09 Jun 2011 08:17|
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