UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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Conference: Bucharest University Faculty of Physics 2016 Meeting


Section: Polymer Physics


Title:
Swelling behavior of Xanthan/Acrylic acid/ N,N-Methylenebis(acrylamide)/PVP/Graphene superabsorbent hydrogels nanocomposites


Authors:
Ion CALINA(1,2), Catalin VANCEA(1,2), Maria DEMETER (1,3), Anca SCARISOREANU(1),Eugenia BADITA(1), Elena STANCU(1,2)


Affiliation:
1)National Institute for Laser, Plasma & Radiation Physics (INFLPR), Magurele, Romania

2)University of Bucharest, Faculty of Physics, Atomistilor Street, no. 405, Magurele, Romania

3)University of Bucharest, Faculty of Chemisty, 4-12 Regina Elisabeta Street, 030018, Bucharest, Romania



E-mail
catalin.vancea@yahoo.com


Keywords:
superabsorbent hydrogel, xanthan gum, graphene, electron beam, swelling.


Abstract:
A new series of superabsorbent hydrogels nanocomposites based on Xanthan/Acrylic acid/N,N′-Methylenebis(acrylamide)/PVP/Grapheme were prepared by in situ radiation crosslinking. The polymeric blend was irradiated with electron beams at three different doses: 5, 10 and 20 kGy and a dose rate of 4 kGy/min. The hydrogels were characterized from a physical and chemical point of view by determining the gel fraction and swelling ratio. The chemical structure after swelling of the hydrogels was verified by FT-IR and Raman spectroscopy. The optimization of the synthesis led to the preparation of a superabsorbent hydrogel with very high water absorption ability, with a maximum swelling ratio of 3000 %, stable up to 48 h. The hydrogels obtained by this facile approach provide new possibilities in biomedical applications as biosensors or as biodegradable conductive hydrogels.


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