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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:54 |
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Conference: Bucharest University Faculty of Physics 2017 Meeting
Section: Biophysics; Medical Physics
Title:
Structural changes and swelling behavior of e-beam crosslinked gellan gum-co-lactic acid hydrogels
Authors:
Ion CALINA (1,2), Maria DEMETER (1,3), Catalin VANCEA (1,2), Anca SCARISOREANU (1), Aurel POPESCU (2)
*
Affiliation:
1) National Institute for Laser, Plasma and Radiation Physics, Accelerators Laboratory, 409 Atomistilor, Magurele, Romania;
2) Faculty of Physics, University of Bucharest, 405 Atomistilor, Magurele Romania;
3) Faculty of Chemistry, University of Bucharest, Bucharest, Romania.
E-mail
calina.cosmin@inflpr.ro
Keywords:
Hydrogel, gellan gum, lactic acid, electron beam irradiation, cross-linking.
Abstract:
In this study the gellan gum-co-lactic acid hydrogels were synthesized by electron beam irradiation in the absence of oxygen. The preparation conditions, the polymer content, concentration of lactic acid and irradiation dose on the gelation process were investigated. Sol–gel analysis and swelling experiments were performed in order to determine the gel fraction, network parameters (the molecular weights between two successive cross−links, the cross–linking density and the mesh size), the yield of cross–linking, respectively scission, as well as to establish the diffusion characteristics of water. FT-IR measurements were performed to follow the chemical changes, which took place in the samples during irradiation.
Acknowledgement:
This work has been financed by the National Authority for Research and Innovation in the frame of Nucleus programme – contract 4N/2016.
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