SMALL-ANGLE X-RAY-SCATTERING OF HYDROPHIL IC AND HYDROPHOBIC COLLOIDAL SIO2 PARTICLES IN BINARY LIQUIDS

Authors
Citation
L. Turi et I. Dekany, SMALL-ANGLE X-RAY-SCATTERING OF HYDROPHIL IC AND HYDROPHOBIC COLLOIDAL SIO2 PARTICLES IN BINARY LIQUIDS, Magyar kemiai folyoirat, 102(2), 1996, pp. 71-77
Citations number
16
Categorie Soggetti
Chemistry
Journal title
ISSN journal
00250155
Volume
102
Issue
2
Year of publication
1996
Pages
71 - 77
Database
ISI
SICI code
0025-0155(1996)102:2<71:SXOHIA>2.0.ZU;2-E
Abstract
Small-angle X-ray scattering of hydrophilic and hydrophobic SiO2 parti cles were studied by a Kratky camera in a He atmosphere. The scatterin g intensity functions of the hydrophilic and hydrophobic colloidal par ticles are not very different; however, the primary intensity I-0 is c onsiderably larger for hydrophobic particles. In hydrophobic silica su spensions in benzene-n-heptane mixtures the SAXS parameters (K-P, Q, I -0), the correlation length l(c) and the calculated distance distribut ion function p(r) provide useful information about the aggregation and the stability of colloidal dispersions in non-electrolyte media.