Chemical Modifications of Natural Polymers and Their Technological Relevance

Shalaby, Shalaby W.; Shah, Kishore R.

doi:10.1021/bk-1991-0467.ch004

Cited by 12 publications

(2 citation statements)

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“…This feature contributes to their most striking properties such as biocompatibility and biodegradability, which have attracted researchers towards the widespread application of natural polymers [29]. In addition, natural polymers also offer ease of processing [30] and of chemical modification [31]. Although several natural polymers exist, in our research group, we have been mostly focusing on investigating polyhydroxyalkanoates and polysaccharides such as cellulose, starch, and chitosan (Fig.…”

Section: Microparticles Based On Natural Polymersmentioning

confidence: 99%

Designing polymeric microparticles for biomedical and industrial applications

Campos

Branquinho

Carreira

et al. 2013

European Polymer Journal

160

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Section: Microparticles Based On Natural Polymersmentioning

confidence: 99%

Designing polymeric microparticles for biomedical and industrial applications

Campos

Branquinho

Carreira

et al. 2013

European Polymer Journal

160

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“…Textile industries and biochemical usages are the main applications of polymeric materials [8,9]. Polymers are widely used as coating materials for nanoparticles [10].…”

Section: Introductionmentioning

confidence: 99%

Copper, gold, and silver decorated magnetic core–polymeric shell nanostructures for destruction of pathogenic bacteria

Padervand

Karanji

Elahifard

2017

Russ. J. Phys. Chem.

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Fe 3 O 4 magnetic nanoparticles (MNPs) were prepared by co-precipitation method. The nanoparticles were silica coated using TEOS, and then modified by the polymeric layers of polypropylene glycol (PPG) and polyethylene glycol (PEG). Finally, the core-shell samples were decorated with Ag, Au, and Cu nanoparticles. The products were characterized by vibrating sample magnetometry (VSM), TGA, SEM, XRD, and FTIR methods. The antibacterial activity of the prepared samples was evaluated in inactivation of E. coli and S. aureus microorganisms, representing the Gram-negative and Gram-positive species, respectively. The effect of solid dosage, bacteria concentration and type of polymeric modifier on the antibacterial activity was investigated. TEM images of the bacteria were recorded after the treatment time and according to the observed changes in the cell wall, the mechanism of antibacterial action was discussed. The prepared nanostructures showed high antibacterial activity against both Gram-negative and Gram-positive bacteria. This was due to the leaching of metal ions which subsequently led to the lysis of bacteria. A theoretical investigation was also done by studying the interaction of loaded metals with the nucleotide components of the microorganism DNA, and the obtained results were used to explain the experimental data. Finally, based on the observed inactivation curves, we explain the antibacterial behavior of the prepared nanostructures mathematically.

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Medical Fibers and Biotextiles

King

Chung

2013

Biomaterials Science

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Chemical Modifications of Natural Polymers and Their Technological Relevance

Cited by 12 publications

References 0 publications

Designing polymeric microparticles for biomedical and industrial applications

Designing polymeric microparticles for biomedical and industrial applications

Copper, gold, and silver decorated magnetic core–polymeric shell nanostructures for destruction of pathogenic bacteria

Medical Fibers and Biotextiles

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