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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:04 |
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Conference: Bucharest University Faculty of Physics 2014 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Small-Angle neutron scattering studies of sodium alginate - (1)
Authors:
Chivuța Ramona BĂDIȚA(1,2), Dorina ARANGHEL(1), A. RADULESCU(3), E.M. ANITAS(1,4)
Affiliation:
1) National Institute for Nuclear Physics and Engineering, P.O.Box MG-6, RO-077125 Bucharest-Magurele, Romania
2)University of Bucharest, Faculty of Physics, Atomiºtilor 405, CP MG - 11, RO – 077125, Bucharest-Magurele, Romania
3) Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science, 85747 Garching, Germany
4) Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russian Federation
E-mail
chivuta_badita@yahoo.com
Keywords:
sodium alginate; fractal dimensions; small angle neutron scattering (SANS).
Abstract:
Sodium alginate is a biopolymer used in the biomedical, food, cosmetics and pharmaceutical industries. Despite the extensive investigation some fundamental questions concerning the mechanism and features involved in gelation of alginate remained still unresolved. The aim of this study is to investigate the morphology of the low viscosity sodium alginate as a function of sodium alginate concentration and calcium concentration by Small-Angle Neutron Scattering (SANS) in the q-interval 0.003 Å−1 < q < 0.5 Å−1. The characterization of the sodium alginate solutions was made by approximating SANS data with a unified exponential/power-law approach. SANS data exhibit a fractal behavior which fractal dimension between 2 and 3 and to analyze the data for the polymer the Beaucage model was applied.
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