Acrylamide/Acrylic Acid Copolymer Nanocomposites
In Acrylamide/Acrylic Acid Copolymer Nanocomposites, the acrylamide/acrylic acid copolymer forms the continuous matrix containing the dispersed nanoparticles. (RDC 5/7/2009)
Acrylamide /Acrylic Acid Superabsorbents
Materials
Nanocomposites
Recent Journal Articles
Utilization of starch and montmorrilonite for the preparation of superabsorbent nanocomposite
(2406–2412)Journal of Applied Polymer Science 121 #4 (2011)
Zhou, Zhao and Zhou of the Southwest Petroleum University, China, used starch and montmorillonite (MMT) as raw materials for synthesizing starch-graft-poly[acrylamide (AM)–acrylic acid (AA)]/MMT superabsorbent nanocomposite by graft and intercalation copolymerization reaction of starch, AM, and AA in the presence of organic MMT micropowder in aqueous solution. The superabsorbent nanocomposite synthesized under optimal synthesis conditions exhibits absorption of 1120 g H2O/g sample and 128 g H2O/g sample in deionized water and in 0.9 wt % NaCl solution, respectively. IR spectra showed that the graft copolymerization between OH groups on MMT and monomers took place during the reaction, and that crystal interlayer was pulled open in the superabsorbent nanocomposite. X-ray diffraction analysis showed that the crystal interlayer of MMT was pulled open to 2.73 nm, and thus formed nanometer exfoliation composite material. Thermogravimetric analysis showed that starch-graft-poly (AM–AA) superabsorbent nanocomposite (8 wt % MMT) has good thermal stability. This superabsorbent nanocomposite with excellent water absorbency and water retention, being biodegradable in nature, economical and environment friendly, could be especially useful in industry, agricultural, and horticultural applications. (RDC 5/23/2011)
Review Articles
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Editor's Notes
As the literature is reviewed, and items of interest concerning this topic are found. These may be added in an abbreviated form with the reference. Readers and contributors are invited to add their own notes. Contributors may add them directly and other readers can simply send their notes to the editor, Roger Corneliussen at rcorneliussen@4spe.org. He may edit and add them to this page at his discretion.