Catalytic activities of amino acid modified, starch‐grafted acrylamide for the decomposition of hydrogen peroxide

Abstract

Acrylamide was grafted onto corn starch with ceric(IV) ions as an initiator. Starch-graft-polyacrylamide was modified with amino acids through a reaction with the sodium salts of glycine, ␤-alanine, and phenylalanine. The catalytic activities of the iron(III) complexes of the amino acid modified grafted materials were investigated for the decomposition of hydrogen peroxide (H 2 O 2 ). These new polymeric supports were found to be active in the catalytic decomposition of H 2 O 2 . The extent of decomposition varied with the composition of the support. The iron(III) complex of the glycine-modified material was the most active of the amino acid supported catalysts. Factors that affected the rate of reaction, such as the concentration of H 2 O 2 , the amount of the catalyst, the pH, and the temperature, were investigated.

Oxidation of Phenol by Hydrogen Peroxide Catalyzed by Metal-Containing Poly(amidoxime) Grafted Starch

“…Other applications of starch-graft polymers included phase transfer catalytic displacement and reduction [ 7 ], use as flocculating agents [ 8 ], oilfield and drilling mud additives [ 9 ]. Modified starch- g -polyacrylamide was found to be active in the catalytic decomposition of H 2 O 2 at different pHs [ 10 ].…”

Surface Modification of Low-Density Polyethylene Films via Photografting Polymerization Technique

“…Thus, radicals are generated on the polymer surface for the subsequent initiation of graft copolymerization. The polymeric substrates studied in the last few years include cellulose [3] and its derivatives [4], starch [5], and its derivatives [6], polyethylene [7], and polypropylene [8]. More recently, in our laboratory, an innovative bulk surface photografting process, in which a drop of solution containing the monomer and a photoinitiator was sandwiched between two thin films has been reported [9][10][11].…”

Graft copolymers with chemically complementary components as a special class of high-molecular-weight compounds

“…These compounds are widely used for controlling stability of disperse systems, 1 ± 7 as compatibilisers for improving compatibility of polymer mixtures, 8 ± 12 as matrix binders in biotechnological processes, macromolecular therapeutic systems 13 ± 19 and paper production, 20 as semipermeable membranes, 21 ± 23 thickeners, 24 ± 28 film-forming coatings, 29,30 protective coatings, 31 ± 33 lyophilising coatings, 34 ± 40 physical gels 41 and agents of drag reduction of turbulent flow. 42 ± 44 Such heteropolymeric systems have attracted growing interest in recent years owing to impressive progress in developing new nanoreactor catalytic processes 45,46 and nanophase technologies for the construction of composite polymeric materials, including controlled growth of metal nanoparticles in the presence of polymer matrices 47,48 and grafting of polymer chains onto the surface of inorganic nanoparticles. 49 ± 59 The interest in graft copolymers is associated with considerable possibilities for controlling their structures and properties through variations in the chemical nature and length of polymer components and through changes in the number (density) and distribution of grafted chains.…”