Preparation of kaolinite/poly superabsorbent composite by UV photoinitiation

The superabsorbent composite of kaolinite/poly (acrylic acid-co-acrylamide) was prepared by UV photopolymerization using N, N-methylene-bis-acrylamide and Iragure 184 as crosslinker and photoinitiator respectively. The effects of the amount of kaolinite on water absorbency, water absorbing rate and water retention were studied. The structure and morphology of the composite were investigated through FTIR, XRD and SEM. The results show that the composite at 15% mass fraction of kaolinite exhibits excellent performance in the water absorbency of 1095 g/g, the salt water absorbency of 94.7g/g, quick absorbing rate and the better retention ability.