Synthesis of a biocopolymer carrageenan-g-poly(AAm-co-IA)/ montmorilonite superabsorbent hydrogel composite
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چکیده
منابع مشابه
Synthesis, characterization, and swelling behaviors of a pH-responsive CMC-g -poly(AA-co-AMPS) superabsorbent hydrogel
New superabsorbent hydrogels were synthesized through free radical graft copolymerization of partially neutralized acrylic acid (AA) and 2-acrylamido-2-methylpropanesulfonic acid (AMPS) onto carboxymethyl cellulose (CMC) backbones. The structure and morphology of the synthesized superabsorbent hydrogels were characterized by Fourier transform infrared spectroscopy and scanning electron microsco...
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In this work, a novel superabsorbent hydrogel composite based on collagen have been prepared via graft copolymerization of methacrylic acid (MAA) in the presence of kaolin powder by using methylenebisacrylamide (MBA) as a crosslinking agent and ammonium persulphate (APS) as an initiator. A proposed mechanism for hydrogel formation was suggested and the structure of the composite was established...
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In this article, we synthesize of a novel starch-based superabsorbent hydrogel via graft copolymerization of mixtures of acrylic acid (AA) and 2-Hydroxy ethyl methacrylate (HEMA) onto starch backbones. The polymerization reaction was carried out in an aqueous medium and in the presence of ammonium persulfate (APS) as an initiator and N,N’-methylene bisacrylamide (MBA) as a crosslinker. The hydr...
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In this study, the corn straw after removing the lignin was grafted with 2-acrylamido-2-methylpropanesulfonic acid (AMPS) to prepare sulfonated cellulose. The grafting copolymerization between the sulfonated cellulose and acrylic acid (AA) was performed using potassium persulfate and N,N1-methylenebisacrylamide as the initiator and crosslinking agent, respectively, to prepare corn straw-co-AMPS...
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A series of acid hydrolysis lignin-g-poly-(acrylic acid) (AHL-g-PAA) composites was prepared by grafting acid hydrolysis lignin on the surface of the polyacrylic acid network. The results of structure analysis revealed that AHL-g-PAA had been grafted. The surface morphologies of the hydrogels were improved, as shown by scanning electron microscopy observation. The AHL-g-PAA hydrogel had high wa...
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ژورنال
عنوان ژورنال: Brazilian Journal of Chemical Engineering
سال: 2012
ISSN: 0104-6632
DOI: 10.1590/s0104-66322012000200010