Nanotechnology

Research findings from A. Pourjavadi et al update understanding of science

  2008 NOV 24 - (VerticalNews.com) -- "Hydrogels of poly(acrylic acid) grafted onto salep with excellent water absorption and water retention abilities under neutral conditions were successfully synthesized for the first time and employed for different applications. The effect of reaction variables to achieve maximum swelling capacity was investigated," investigators in Iran report.

  "In our procedure, ammonium persulfate (APS) as a water-soluble initiator and methylenebisacrylamide (MBA) as a suitable crosslinking agent were used and the best synthesis conditions described. The structure of the final product was confirmed by Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy SEM and TGA analysis and a mechanism for superabsorbent hydrogel formation was also suggested. The study of the surface morphology of hydrogels using SEM showed a highly nanoporous and cellular structure for the sample obtained under optimized condition," wrote A. Pourjavadi and colleagues.

  The researchers concluded: "Furthermore, several factors which influence the water uptake of hydrogels, such as pH of water, sensitivity to salt solutions and solvent mixtures were examined."

  Pourjavadi and colleagues published their study in Starch - Starke (Novel nanoporous superabsorbent hydrogel based on poly(Acrylic acid) grafted onto salep: Synthesis and swelling behavior. Starch - Starke, 2008;60(9):467-475).

  For additional information, contact A. Pourjavadi, Sharif University Technology, Polymer Research Laboratory, Dept. of Chemical, Azadi Avenue, POB 11365-9516, Tehran, Iran.

  The publisher of the journal Starch - Starke can be contacted at: Wiley-V C H Verlag GmbH, PO Box 10 11 61, D-69451 Weinheim, Germany.

  Keywords: Emerging Technologies, Nanoporous, Nanotech, NanotechnologyStarch-starke.

  This article was prepared by VerticalNews Nanotechnology editors from staff and other reports. Copyright 2008, VerticalNews Nanotechnology via VerticalNews.com.