Swelling behavior of poly (2-hydroxyethyl methacrylate) copolymer gels
1 Macromolecular Research Laboratory Faculty of Sciences, University of Tlemcen, BP. 119, 13000, Algeria
2 Division of Nuclear Applications, Nuclear Research Center of Algiers, BP. 399 Alger-RP 16000, Algiers, Algeria
3 Organic Materials Laboratory, University A. Mira, 06000 Bejaïa, Algeria
a e-mail: firstname.lastname@example.org
Hydrogels based on 2-hydroxyethyl methacrylate/dimethyl-aminoethyl methacrylate copolymers were prepared by gamma radiation-inducedco-polymerization at low temperature (−78°C). The swelling behavior of hydrogels was studied by immersion of the polymer discs in buffered solutions at pH from 2 to 10. The hydration process was followed gravimetrically by measuring the water uptake of the discs as a function of time. The results obtained have shown that the swelling behavior is reversible and depends on the polymer nature. Moreover, polymeric discs exhibited a good stability after repeating cycles of hydration in different buffer solutions. Scanning electron microscopy analysis reveals that hydrogel porosity can be controlled.
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