Vol. 9, No 1, 2011 pp. 29 - 36
DOI 10.2298/FUPCT1101029C
UDC 666.11.016.25 : 546.185 + 544.038.1
DENSITY AND MOLAR VOLUME STUDIES OF PHOSPHATE GLASSES
U. B. Chanshetti1, V. A. Shelke2, S. M. Jadhav2, S. G. Shankarwar2, T. K. Chondhekar2, A. G. Shankarwar3, V. Sudarsan4, M. S. Jogad5
1Department of Chemistry, Arts, Science & Commerce College, Naldurg 413 602, India
2Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad
3Department of Chemistry, S. B. E. S. College of Aurangabad
4Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
5Department of Physics, S. B. Science College, Gulbarga 585 103, India
Abstract.The density and molar volume of some phosphate glasses (xNa2O•(100-x)P2O5, x = 30, 35, 40, 45, 50); xB2O3•(1-x)NaPO3, x = 5, 10, 15, 20, 25; xNa2O•(30-x) K2O•10Al2O3• 25B2O3•35P2O5, x= 5, 10, 15, 20, 25) glasses were determined, in order to study their structure. The density of the glasses increased while their molar volume values decreases with the increase of sodium oxide content in phosphate glasses. The results obtained could be correlated to several factors such as the polarization, the field strengths and the ionic radii of the different incorporated cations.
Key words: density, molar volume, glass composition, mixed alkali effect, mixed glass former effect
ODREĐIVANJE GUSTINE I MOLARNE ZAPREMINE FOSFATNIH STAKALA
U cilju proučavanja strukture pojedinih tipova fosfatnih stakala (xNa2O•(100-x)P2O5, x= 30, 35, 40, 45, 50); xB2O3•(1-x)NaPO3, x= 5, 10, 15, 20, 25; xNa2O•(30-x)K2O•10Al2O3•25B2O3•35P2O5, x= 5, 10, 15, 20, 25), određivane su njihova gustina i molarna zapremina. Sa povećanjem sadržaja natrijum-oksida, povećavala se i gustina fosfatnih stakala, dok se odgovarajuća molarna zapremina smanjivala. Dobijeni rezultati se mogu dovesti u vezu sa nekoliko faktora kakvi su polarizacija, jačina polja i josnki radijusi različitih inkorporiranih katjona.
Ključne reči: gustina, molarna zapremina, sastav stakla, efekat mešanjat katjona, efekat mešanja graditelja stakla