SYNTHESIS AND SWELLING BEHAVIOUR OF COLLAGEN-g-POLY(MAA)/KAOLIN SUPERABSORBENT HYDROGEL COMPOSITES
نویسنده
چکیده
In this work, a novel superabsorbent hydrogel composite based on collagen have been prepared via graft copolymerization of methacrylic acid (MAA) in the presence of kaolin powder by using methylenebisacrylamide (MBA) as a crosslinking agent and ammonium persulphate (APS) as an initiator. A proposed mechanism for hydrogel formation was suggested and the structure of the composite was established by using FTIR spectroscopy and gravimetric analysis of the products. A new absorption band at 1 cm 1728 − in the composite spectrum confirmed kaolin-organic polymer linkage. The effect of kaolin amount and MBA concentration showed that with increasing of these parameters, the water absorbency of the superabsorbent composite was decreased.
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