<scp>Semi‐IPN</scp> superabsorbent polymer based on itaconic acid and polyvinyl alcohol with improved gel strength and salt resistance

Semi-interpenetrating polymer network (semi-IPN) technology was introduced in order to improve the gel strength and salt resistance of itaconic acid (IA)-based superabsorbent polymers (SAPs). A semi-IPN SAP based on IA 2-acrylamido-2-methyl-1-propanesulfonic (AMPS) synthesized. Polymerization performed using a one-pot method an aqueous solution presence polyvinyl alcohol (PVA). The structural thermal properties PVA/poly(IA-co-AMPS) were studied Fourier transform infrared, differential scanning calorimetry, thermogravimetry analysis. PVA formed strong hydrogen bonds with hydrophilic functional groups stability SAP. content 6 wt% increased centrifuge retention capacity absorbency under load 60.1 16.4 g/g, respectively. Owing less salt-sensitive hydroxyl PVA, showed higher absorption (up 26.3%) solution. resulting has very low concentration residual monomers (167.4 ppm). Experimental results suggest that is eco-friendly excellent properties, making it suitable for application personal care products.