Abstract
Graphene oxide/poly(acrylic acid) (GO/PAA) hybrid hydrogel was prepared using a γ-ray pre-irradiation technique. The functional groups in graphene oxide were modified to peroxide in an O2 environment with γ-ray radiation. Radical species from the thermal decomposition of peroxides initiated radical polymerization of the acrylic acid monomers. Modified GO and GO/PAA hydrogels were investigated using scanning electron microscopy and Fourier transform infrared (FTIR), Raman, and electron spin resonance spectroscopy. The thermal, mechanical, and swelling properties of GO/PAA hydrogel were studied by a tensile stress-strain curve and thermal gravimetric analysis. A genuine binary hybrid hydrogel of graphene oxide and PAA was obtained from a simple synthetic procedure based on γ-ray pre-irradiation without further additives.
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Lee, S., Lee, H., Sim, J.H. et al. Graphene oxide/poly(acrylic acid) hydrogel by γ-ray pre-irradiation on graphene oxide surface. Macromol. Res. 22, 165–172 (2014). https://doi.org/10.1007/s13233-014-2025-x
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DOI: https://doi.org/10.1007/s13233-014-2025-x