EVALUATION OF SWELLING PROPERTIES OF POLY (ACRYLIC ACID)/Zr-PILLARED K10 SUPERABSORBENT HYDROGEL

Year 2018, Volume: 2 Issue: 3, 1 - 10, 31.07.2018

Zehra Bekçi Molu

Abstract

Zr- Pillared K10 (Zr-K10) was synthesized by using
Montmorillonite K10 clay. Zr- pillared K10 based superabsorbent (Zr-PILC-SA)
was synthesized by using Zr- pillared- montmorillonite K10 via graft
copolymerization reaction of acrylic acid (AA). After preparation of the films
of hydrogels of Zr- pillared K10, swelling studies were performed in distilled
water and different pH values at room temperature to investigate swelling
behavior of pillared clay based superabsorbent films. It was also obtained that
Zr-K10 based superabsorbent was pH dependent and showed a reversible swelling
behavior. The swelling behavior of Zr-K10-SA was increasing by decreasing
amount of Zr-K10 in the hydrogel. SEM, FTIR and XRD analysis were conducted for
further characterization of the Zr-PILC-SA. FTIR analyses lead to ester
formation between Zr-K10 and SA. XRD revealed the morphology of the
superabsorbent was exfoliated and the layers of clay dispersed on the
composite. 

Keywords

hydrogel, superabsorbent composite, swelling, pH sensitivity, pillared clay.

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