Polymerization of Acrylamide Initiated by Hydroxy Terminated Polybutadiene-ceric Ammonium Nitrate Redox System

This work describes the release of copper(II) ions from cellulose fibers, which have been chemically modified by periodate-induced oxidation of cellulose, followed by covalent attachment of biopolymer chitosan. The release of copper(II) ions has been investigated in physiological fluid (PF) and protein solution (PS) both at 37 C. Fibers have demonstrated excellent antibacterial activity against E. coli. Finally, their borohydride-induced reduction has yielded copper nanoparticleloaded fibers, with average diameter of particles, nearly 28.94 nm. The formation of copper nanoparticles has been established by surface plasmon resonance and FTIR spectroscopy. These fibers also show fair biocidal action against E. coli.

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Copper (II) ions and copper nanoparticles‐loaded chemically modified cotton cellulose fibers with fair antibacterial properties

Mary¹,

Bajpai

Chand

2009

J of Applied Polymer Sci

119

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Gentamicin‐loaded poly(acrylic acid)‐grafted cotton fibers, part 1: Synthesis, characterization, and preliminary drug release study

Bajpai¹,

Das²

2011

J of Applied Polymer Sci

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This study describes preparation of poly (acrylic acid)-grafted cotton fibers and release of antibiotic drug gentamicin sulfate from them under physiological conditions. Poly(acrylic acid) has been grafted onto cellulose backbone of cotton fibers via Ce(IV)-initiated polymerization in aqueous medium. The conditions obtained for optimum grafting were as follows: initiation time 30 min; initiation temperature 37 C; monomer concentration 27.8 mM; grafting temperature 30 C; nitric acid (catalyst) concentration 0.1M. The grafted fibers were characterized by FTIR, TGA, and SEM analysis. The antibiotic drug gentamicin sulfate (GS) was loaded into the grafted fibers by equilibration method and release was studied under physiological conditions. The kinetic release data was interpreted by first-order kinetic model. Finally, drug-loaded fibers showed fair antibacterial action against Escherichia coli.

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Synthesis and properties of silver nanoparticles in chitosan‐based thermosensitive semi‐interpenetrating hydrogels

Wen

Zhang

et al. 2012

J of Applied Polymer Sci

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In this article, thermosensitive poly(N‐isopropyl acrylamide‐co‐vinyl pyrrolidone)/chitosan [P(NIPAM‐co‐NVP)/CS] semi‐interpenetrating (semi‐IPN) hydrogels were prepared by redox‐polymerization using N,N‐methylenebisacrylamide as crosslinker and ammonium persulfate/N,N,N′,N′‐tetramethylethylenediamine as initiator. Highly stable and uniformly distributed Ag nanoparticles were prepared by using the semihydrogel networks as templates via in situ reduction of silver nitrate in the presence of sodium borohydride as a reducing agent. Introduction of CS improves the hydrogels swelling ratio (SR) and stabilizes the formed Ag nanoparticles in networks. Scanning electron microscopy and transmission electron microscopy revealed that Ag nanoparticles were well dispersed with diameters of 10 nm. The semi‐IPN hydrogel/Ag composites had higher SR and thermal stability than its corresponding semi‐IPN hydrogels. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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Polymerization of Acrylamide Initiated by Hydroxy Terminated Polybutadiene-ceric Ammonium Nitrate Redox System

Cited by 7 publications

References 70 publications

Copper (II) ions and copper nanoparticles‐loaded chemically modified cotton cellulose fibers with fair antibacterial properties

Copper (II) ions and copper nanoparticles‐loaded chemically modified cotton cellulose fibers with fair antibacterial properties

Gentamicin‐loaded poly(acrylic acid)‐grafted cotton fibers, part 1: Synthesis, characterization, and preliminary drug release study

Synthesis and properties of silver nanoparticles in chitosan‐based thermosensitive semi‐interpenetrating hydrogels

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