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

Yıl 2018, Cilt: 2 Sayı: 3, 1 - 10, 31.07.2018

Zehra Bekçi Molu

Öz

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. 

Anahtar Kelimeler

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

Kaynakça

• REFERENCES
• CHENG, L.S., YANG, R.T., (1997), Tailoring micropore dimensions in pillared clays for enhanced gas adsorption, Microporous Materials 8: 177-186. EL-HAMSHARY, H., (2007), Synthesis and water sorption studies of pH sensitive poly(acrylamide-co-itaconic acid) hydrogels, European Polymer Journal, 43: 4830–4838. FIGUERAS, F., (1988), Pillared clays as catalysts, Catalysis Reviews 30: 457 – 499. GIL, A., GANDIA, L.M., VICENTE, M.A., (2000), Recent Advances in the Synthesis and Catalytic Applications of Pillared Clays, Catalysis Reviews - Science and Engineering, 42: 145-212 LEE, W.F., WUM, R.J., (1996), Superabsorbent polymeric materials. 1. Swelling behaviors of crosslinked poly(sodium acrylateco- hydroxyethyl methacrylate) in aqueous salt solution, J. Appl. PolYM. SCI., 62: 1099–1114. LIN, J., WU, J., YANG, Z., PU, M., (2001), Synthesis and properties of poly(acrylic acid)/mica superabsorbent nanocomposite, Macromol Rapid Commun, 22: 422-424. LI, A., WANG, A.Q., CHEN, J.M., (2004), Studies on poly (acrylic acid)/attapulgite superabsorbent composite. I. Synthesis and characterization, J Appl Polym Sci, 92: 1596-1603. VAUGHAN, D.E.W., (1988), Pillared clays - a historical perspective, Catalysis Today, 2:187-198. WANG, W., ZHENG, Y. and WANG, A., 2008, Syntheses and properties of superabsorbent composites based on natural guar gum and attapulgite, Polymers For Advanced Technologies, 19: 1852–1859. WEAVER, M.O., BAGLEY, E.B., FANTA, G.F., DOANE, W.M., (1976), Highly absorbent starch-containing polymeric compositions, US Patent, 3,981,100. WU, J., LIN. J., ZHOU, M., WEI, C., (2000), Synthesis and properties of starch-graft-polyacrylamide/clay superabsorbent composite, Macromol. Rapid Commun, 21: 1032-1034. WU, J.H., WEI, Y.L., LIN, S.B., (2003), Study on starch-graft-acrylamide/mineral powder superabsorbent composite, Polymer, 44: 6513-6520. ZHANG, J.P., CHEN, H., WANG, A.Q., (2006), Study on superabsorbent composite—VII. Effects of organification of attapulgite on swelling behaviors of poly (Acrylic acid-co-acrylamide)/sodium humate/organo-attapulgite composite, Polymers for Advanced Technologies, 17: 379–385.