A comparative study on the clays incorporated with acrylamide-based hydrogels
In the current study to increase the release ability of acrylamide-based hydrogels, modified acrylamide-based hydrogel nanocomposites were synthesized and Montmorillonite, Kaolinite, and Illite were added to the matrix. The characterization of the clays was carried out using EDX and XRD, whereas the characterization of the clay-hydrogels was carried out with Fourier transform infrared spectroscopy (FTIR), Field Emission Scanning Electron Microscope (FESEM), swelling ratio, and rheology measurements. EDX of clays showed that the highest amount of Al (17.18 0.12%) is for Kaolinite and the highest amount of Si (20.94 0.85%) and Fe (8.53 %) belongs to Illite. The highest amount of C (6.97 1.54%) is for Montmorillonite. The swelling of Montmorillonite/Aam hydrogels including was found to be higher than other types of hydrogels used in this study. The shifting of the bonds in FTIR and FESEM images of composites showed that the clays are well-incorporated to the polymer and the shape of the composites in the FESEM images indicates the effect of clays on the structure of polymers. The highest swelling ratio was attributed to Montmorillonite/Aam composite. The frequency sweep test showed that the G’ and G” value of the Illite/Aam G’ (1260 36.5 Pa) and (198.5 6.6 Pa) was higher than the other mixtures.
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