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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:25 |
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Conference: Bucharest University Faculty of Physics 2001 Meeting
Section: Polymer Physics
Title:
THE STRUCTURE OF SCLEROGLUCAN IN AQUEOUS SOLUTIONS
Authors:
Livia Maria Constantinescu
Affiliation:
Faculty of Physics, University of Bucharest
E-mail
Keywords:
Abstract:
The conformational behavior of the Scleroglucan ( a non ionic polysaccharide) in aqueous solutions was investigated as function of pH and temperature. The main experimental techniques were: light scattering, optical rotation and viscosimetry.
For low molecular weight Scleroglucan (Mn 105g·mol-1) formation of cholesteric mesophases is observed in aqueous solutions either by cooling or by increasing the polymer concentration; while for high molecular weight, formation of gels occurs under same conditions.
Low angle neutron scattering and X-ray diffraction should provide supplementary information on the dilute and semi-dilute solutions.
References:
1. T.Yanaki, T.Norisuye, Polym. J., 15, 389, 1983.
2. T. El Ouriaghli, Th?se, Strasbourg, 1989
3. L.M.Ionescu, C.Picot, M.Duval, R.Duplessix, H.Benoit, J.P.Cotton, J.Polym.Sci : Polym, Phys.Ed., 19, 1019, 1981
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