The Effect of Bentonite Addition on Superabsorbent Polymer Compositehydrogel Based Cellulose

Abstract

Superabsorbent Polymer Composite (SAPC) hydrogel has been synthesized by graf copolymerization of mixture Carboxymethyl Cellulose (CMC), Acrylic Acid (AA), potassium persulfate (KPS) as initiator and N, N\u27-Methylene (Bis) Acrylamide (MBA ) as crosslinker. Composite was prepared by adding bentonite to the polymer hydrogel. Concentration of bentonite were varied in range of 0 -15 wt%. As fixed variable were AA 100 wt%, CMC 10 wt%, KPS 2.5 wt% and MBA 3.75 wt% at 60oC for 5 hours. The effect of bentonite on water absorbency was discussed and the highest water absorbancy of 54.38 g/g was obtain when the amount of bentonite in the feed was 10 wt%. The graft copolymerization reaction mechanism and morphology of the composite were also investigated by Fourier Transform-Infra Red (FT-IR) and Scanning Electron Microscope (SEM)