Abstract
A new hectorite/poly(acrylamide/itaconic acid) nanocomposite hydrogel was synthesized by inverse microemulsion polymerization. The effects of crosslinker amount on water absorbency and salt absorbency, swellability, pH-sensitivity, gel strength, temperature-and shear-resistance were investigated. Water and salt absorbencies, pH-sensitivity and swellability decreased, while gel strength and temperature-and shear-resistance increased with increasing crosslinker amount. Nanocomposite hydrogels had good thermal stability with onset decomposing temperature of 252 °C. The as-synthesized hydrogel particles were regular and spherical-like and had an average particle size of 43 nm in the range of 30–65 nm. Hectorite clay platelets were exfoliated and transformed into amorphous structure.
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Wan, T., Cheng, W., Zhou, Z. et al. Influence of crosslinker amount on swelling and gel properties of hectorite/poly(acrylamide/itaconic acid) nanocomposite hydrogels. Korean J. Chem. Eng. 32, 1434–1439 (2015). https://doi.org/10.1007/s11814-014-0313-y
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DOI: https://doi.org/10.1007/s11814-014-0313-y