Preparation of Poly(γ-Glutamic Acid)/Montmorillonite Superabsorbent Nanocomposite

Abstract:

Montmorillonite (MMT) was applied as the modifying agent, polyethylene glycol bisglycidyl ether as crosslinking agent, Poly(γ-glutamic acid)/montmorillonite (γ-PGA/MMT) superabsorbent nanocomposite was prepared. The effects of crosslinking agent mass, MMT contents and reaction temperature on the saline water absorbency of the superabsorbent nanocomposites were studied. The experimental results demonstrated that the saline water absorbency of γ-PGA/MMT nanocomposites increased with the increasing of crosslinking agent mass firstly and decreased when the crosslinking agent mass was higher than 0.6g. The saline water absorbency of γ-PGA/MMT nanocomposites increased with the MMT contents up to 7% and decreased as the MMT contents further increased. Moreover, the saline water absorbency of γ-PGA/MMT nanocomposites increased with the reaction temperature firstly, and then decreased when the reaction temperature was higher than 50°C.

• Periodical: Key Engineering Materials (Volumes 531-532)
• Pages: 609-613
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.531-532.609
• Online since: December 2012
• Authors: Xu Man Wang, Cai Ning Zhang
• Keywords: Montmorillonite, Nanocomposite, Poly(γ-Glutamic Acid), Saline Water Absorbency

References

[1] R.A. Gross and B. Kalra: Science Vol. 297 (2002), p.803

[2] M.H. Sung, C. Park, C.J. Kim, et al: The Chemical Record Vol. 59 (2005), p.352

[3] I.L. Shih, Y.T. Van: Bioresource Technology Vol. 79 (2001), p.207

[4] J.S. Park, S.H. Choi, W.Y. Choi, et al: Agricultural Chemistry and Biotechnology Vol. 48 (2005), p.213

[5] X. Su, G. Zhang, K. Xu, et al: Polymer Bulletin Vol. 60 (2008), p.69

[6] P.J. Flory: Principles of Polymer Chemistry (Cornell University Press, USA 1953)

[7] W. Wang, A. Wang: Journal of Composite Materials Vol. 43 (2009), p.2805

[8] J.M. Lin, J.H. Wu, Z.F. Yang, et al: Macromolecular Rapid Communications Vol. 22 (2001), p.422