Dynamic light scattering of iota carrageenan gelling system
The sol–gel transition of iota carrageenan, a thermoreversible polysaccharide gelling system, was investigated using the dynamic light scattering technique as a function of concentration and temperature, and the results were compared with the earlier viscoelastic results on the same system. At highe...
Saved in:
| Published in | Journal of non-crystalline solids Vol. 235; pp. 682 - 687 |
|---|---|
| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.08.1998
|
| Subjects | |
| Online Access | Get full text |
Cover
Loading…
| Summary: | The sol–gel transition of iota carrageenan, a thermoreversible polysaccharide gelling system, was investigated using the dynamic light scattering technique as a function of concentration and temperature, and the results were compared with the earlier viscoelastic results on the same system. At higher temperatures where the system behaved as a viscous fluid, the field correlation function
g
(1)(
t) is described by a stretched exponential type of decay in the long time region. As temperature decreases, the time profile of
g
(1)(
t) changed, and finally at temperature,
T
d, it took the form of a power law type of decay, being a measure of the sol–gel transition point.
T
d was observed to be comparatively less than
T
c, the temperature at which the power law relaxation was observed in the dynamic viscoelastic (DVE) study. |
|---|---|
| ISSN: | 0022-3093 1873-4812 |
| DOI: | 10.1016/S0022-3093(98)00620-6 |