Synthesis and Characterization of a magnetic multi walled carbon nanotubes nanocomposite hydrogel based on poly(2-dimethylamino) ethyl methacrylate) grafted onto sodium alginate

Document Type : Original Article


Department of Chemistry, Payame Noor University, Tehran, Iran


In this study, the synthesis of a magnetic multi walled carbon nanotubes nanocomposite hydrogel (MMWCNT/Hydrogel) are investigated.(2-dimethylaminoethyl) methacrylate monomers were grafted onto the sodium alginate backbone via initiation by ammonium persulfate (APS), and at the same time, the crosslinking were occurred by using N,N'-methylenebis(acrylamide) (MBA). Factors affecting the water swelling during the hydrogel synthesis, including monomer concentration, MBA concentration and APS concentration were systematically optimized. Swelling capacity was measured at various temperatures, pH values and salt concentrations, and the dependence of swelling properties of the hydrogel nanocomposite on these factors was well demonstrated. The synthesized samples were fully characterized using Fourier transform-infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), scanning electron microscopy analysis (FESEM), transmission electron microscopy (TEM) and vibrating sample magnetometry (VSM).


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