Synthesis, characterization and swelling properties of poly (acrylic acid)/Zr-pillared clay superabsorbent composites

Yıl 2018, Cilt: 20 Sayı: 1, 364 - 374, 03.04.2018

Zehra Bekçi Molu

https://doi.org/10.25092/baunfbed.412169

Öz

Superabsorbents
hydrogel were prepared by using Zr pillared- montmorillonite KSF by graft
copolymerization reaction of acrylic acid (AA). 
Swelling behavior of pillared clay based superabsorbent films in
distilled water and different pH values were investigated at room temperature.
It was also obtained that pillared clay based superabsorbents were pH dependent
and showed a reversible swelling behavior. Water absorbency of pillared clay
based superabsorbent (PILC-SA) was increased by decreasing pillared clay amount
in the network of the superabsorbents. SEM and XRD analysis were conducted for
further characterization of the PILC-SA. XRD revealed the basal spacing of the
pillared clays before and after in-situ incorporation indicating that the
morphology of the superabsorbent was exfoliated and the layers of clay
dispersed on the composite. 

Anahtar Kelimeler

Pillared clay, superabsorbent composite, swelling

Poli(akrilik asit) / Zr-Sütunlu kil süper absorplayıcı kompozitlerin sentezi, karakterizasyonu ve şişme özellikleri

Öz

Süperabsorplayıcı hidrojeller Zr sütunlu montmorillonit KSF ile akrilik
asitin (AA) aşı kopolimerizasyon tepkimesi ile hazırlandı. Sütunlu kil tabanlı
superabsorplayıcı filmlerin şişme özellikleri oda sıcaklığında destile edilmiş
suda ve farklı pH değerlerinde araştırıldı. Sütunlu kil tabanlı
süperabsorplayıcıların pH duyarlı ve yenilenebilir şişme özelliği olduğu
bilgisine de ulaşıldı. Sütunlu kil tabanlı süperabsorplayıcıların (PILC-SA) su
absorplaması süperabsorplayıcının yapısındaki sütunlu kilin miktarının
azalmasıyla artmaktadır. SEM ve XRD analizleri PILC-SA’ların
karakterizasyonları için gerçekleştirildi. Sütunlu killerin etkileşime girmeden
önce ve sonraki tabakalar arası mesafesine XRD ile bakılarak
superabsorplayıcıların morfolojisinin değiştiği ve kilin tabakalarının kompozit
üzerinde dağıldığı ortaya çıkarıldı.

Anahtar Kelimeler

Sütunlu kil, süperabsorplayıcı kompozit, şişme

Kaynakça

• Figueras, F., Pillared clays as catalysts, Catalysis Reviews 30, 457–499,(1988).
• Vaughan, DEW., Pillared clays - a historical perspective. Catalysis Today 2, 187-198, (1988).
• Gil, A., Gandia L.M. and Vicente, M.A., Recent Advances in the Synthesis and Catalytic Applications of Pillared Clays. Catalysis Reviews - Science and Engineering 42, 145-212, (2000).
• Cheng, L.S. and Yang, R.T., Tailoring micropore dimensions in pillared clays for enhanced gas adsorption. Microporous Materials 8, 177-186, (1997).
• Wu, J.H., Wei, Y.L. and Lin, S.B., Study on starch-graft-acrylamide/mineral powder superabsorbent composite. Polymer 44, 6513-6520, (2003).
• Lee, W.F. and Yang, L.G., Superabsorbent polymeric materials. XII. Effect of montmorillonite on water absorbency for poly (sodium acrylate) and montmorillonite nanocomposite superabsorbents, Journal of Applied Polymer Science 92, 3422-3429, (2004).
• Kabiri, K. and Zohuriaan-Mehr, M.J., Porous superabsorbent hydrogel composites: Synthesis, morphology and swelling rate, Macromolecular Materials and Engineering 289, 653-661, (2004).
• Li, A., Wang, A.Q. and Chen, J.M., Studies on poly (acrylic acid)/attapulgite superabsorbent composite. I. Synthesis and characterization, Journal of Applied Polymer Science 92, 1596-1603, (2004).
• Lin, J., Wu, J., Yang, Z. and Pu, M., Synthesis and properties of poly(acrylic acid)/mica superabsorbent nanocomposite, Macromolecular Rapid Communications 22, 422-424, (2001).
• Wu, J., Lin, J., Zhou, M. and Wei, C., Synthesis and properties of starch-graft-polyacrylamide/clay superabsorbent composite, Macromolecular Rapid Communications 21, 1032-1034, (2000).
• Zhang, J.P., Chen, H. and Wang, A.Q., 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, (2006).
• Weaver, M.O., Bagley, E.B., Fanta, G.F. and Doane, W.M., Highly absorbent starch-containing polymeric compositions, US Patent 3,981,100, (1976).
• Taylor, N.W., Fanta, G.F., Doane, W.M. and Russell, C.R., Swelling and rheology of saponified starch-g-polyacrylonitrile copolymers, Effect of starch granule retreatment and grafted chain length. Journal of Applied Polymer Science 22, 1343–1357, (1978).
• Lokhande, H.T., Varadarjan, P.V. and Iyer, V., Water-superabsorbent polymers through gamma radiation-induced graftcopolymerization of acrylonitrile on guargum, Journal of Applied Polymer Science, 45, 2031–2036, (1992).
• Fanta, G.F., Burr, R.C., Doane, W.M. and Russell, C.R., Saponified starch-g-polyacrylonitrile. Variables in the Ce+4 initiation of graft polymerization, Journal of Applied Polymer Science 27, 2713– 2737, (1982).
• Sakiyama, T., Chu, C.H., Fujii, T., Yano, T., Preparation of a polyelectrolyte complex gel from chitosan and k-carrageenan and its pH-sensitive swelling, Journal of Applied Polymer Science 50, 2021–2025.ü, (1993).
• Yoshida, M., Asano, M. and Kumakura, M., A new temperaturesensitive hydrogel with a-amino acid group as side chain of polymer, European Polymer Journal 25, 1197–1202, (1989).
• Shiga, T., Hirose, Y., Okada, A. and Kurauchi, T., Bending of poly(vinyl alcohol)-poly(sodium acrylate) composite hydrogel in electric fields, Journal of Applied Polymer Science 44, 249–253, (1992).
• Shiga, T., Hirose, Y., Okada, A. and Kurauchi, T., Bending of ionic polymer gel caused by swelling under sinusoidally varying electric fields, Journal of Applied Polymer Science. 47, 113–119, (1993).
• Buchhlz, F.L. and Graham, T., Modern Superabsorbent Polymer Technology, Wiley-VCH: New York, 152, (1998).
• Li, A., Wang, A. and Chen, J., Studies on Poly (acrylic acid)/Attapulgite Superabsorbent Composites. II. Swelling Behaviors of Superabsorbent Composites in Saline Solutions and Hydrophilic Solvent– Water Mixtures, Journal of Applied Polymer Science, 94, 1869–1876, (2004).
• El-Hamshary, H., Synthesis and water sorption studies of pH sensitive poly(acrylamide-co-itaconic acid) hydrogels, European Polymer Journal 43, 4830–4838, (2007).
• Lee, W.F. and Wum, R.J., Superabsorbent polymeric materials. 1. Swelling behaviors of crosslinked poly(sodium acrylateco- hydroxyethyl methacrylate) in aqueous salt solution, Journal of Applied Polymer Science 62, 1099–1114, (1996).
• Wu, S., Li, H. and Chen, P.J., Modeling Investigation of Volume Variation Kinetics of Fast Response Hydrogels, Journal of Macromolecular Science, Part C: Polymer Reviews 44,113-130, (2004).
• Zhang, J., Liu, R., Li, A. and Wang, A., Preparation, swelling behaviors and application of polyacrylamide/attapulgite superabsorbent composites, Polymers for Advanced Technologies 17, 12–19, (2006).
• Kaşgöz, H., Durmuş, A. and Kaşgöz, A., Enhanced swelling and adsorption properties of AAm-AMPSNa/clay hydrogel nanocomposites for heavy metal ion removal, Polymers for Advanced Technologies 19, 213–220, (2008).