Synthesis, characterization, and swelling behavior of alginate‐ g ‐poly(sodium acrylate)/kaolin superabsorbent hydrogel composites | Zendy

Pourjavadi Ali | Zendy; Ghasemzadeh Hossein | Zendy; Soleyman Rouhollah | Zendy

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Synthesis, characterization, and swelling behavior of alginate‐ g ‐poly(sodium acrylate)/kaolin superabsorbent hydrogel composites

Author(s) -

Pourjavadi Ali,

Ghasemzadeh Hossein,

Soleyman Rouhollah

Publication year - 2007

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.26345

Subject(s) - swelling , ammonium persulfate , swelling capacity , acrylic acid , copolymer , materials science , grafting , composite number , fourier transform infrared spectroscopy , chemical engineering , aqueous solution , potassium persulfate , polymer chemistry , self healing hydrogels , butyl acrylate , scanning electron microscope , methylene blue , nuclear chemistry , acrylate , composite material , chemistry , organic chemistry , polymerization , polymer , catalysis , engineering , photocatalysis

A novel superabsorbent composite based on sodium alginate and the inorganic clay kaolin was synthesized via the graft copolymerization of acrylic acid (AA) in an aqueous medium with methylene bisacrylamide (MBA) as a crosslinking agent and ammonium persulfate (APS) as an initiator. The effects of reaction variables, such as the MBA, AA, and APS concentrations and the alginate/kaolin weight ratio, on the water absorbency of the composite were systematically optimized. Evidence of grafting and kaolin interactions was obtained by a comparison of the Fourier transform infrared spectra of the initial substrates with that of the superabsorbent composite, and the hydrogel structure was confirmed with scanning electron microscopy. The results indicated that with an increasing alginate/kaolin weight ratio, the swelling capacity and gel content increased. The effects of various salt media were also studied, along with the swelling kinetics. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007

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