Premium
Rheological evolution of a particular sol‐gel system
Author(s) -
FernándezTorres María J.,
Ghirisan Adina L.,
TipanLepetich Janina M.
Publication year - 2001
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450790320
Subject(s) - rheology , sol gel , viscosity , materials science , amorphous solid , chemical engineering , glass transition , chemistry , composite material , polymer , nanotechnology , organic chemistry , engineering
Rheological measurements and results discussed in this paper made on gelling mass containing thetraethoxysilane (TEOS or Si(OC 2 H 5 ) 4 ) and calcium nitrate as sol‐gel precursors is important because of the interest of sol‐gel processes as a possible preparation route of glasses and amorphous body structures (sol‐gel route). The rheological measurements in our study, have been made to investigate the sol‐gel transition of Si(OC 2 H 5 ) 4 by measuring the viscosity evolution at time intervals and temperature values established. The temperature dependence of the viscosity was used to determine the activation energies of the flow.