Preparation and Characterization of the Novels Terpolymers of Poly-{trans-[RuCl2(vpy)4]-styrene-divinylbenzene} and Styrene-divinylbenzene-vinylpiridine impregnated with Silver Nanoparticles

Dutra, Rosilene Linhares; Segala, Karen; Oliveira, Eric M. N. de; Souza, Eduardo Pinheiro de; Rossi, Liane M.; Matos, J. R.; Noda, Lúcia K.; Paula, M.M.S.; Franco, Carlos

doi:10.1007/s00289-008-0916-8

Cited by 7 publications

(2 citation statements)

References 27 publications

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“…AgNPs were synthesized in aqueous media by the chemical reduction of AgNO 3 , using NaBH 4 as a reducing agent and sodium citrate as stabilizer (Dutra et al, 2008). An equimolar solution of AgNO 3 and sodium citrate was maintained at approximately 4 °C under vigorous stirring for 30 minutes, while 0.01 mol L -1 of NaBH 4 was added dropwise.…”

Section: Synthesis Of Agnpsmentioning

confidence: 99%

Silver nanoparticles incorporated into nanostructured biopolymer membranes produced by electrospinning: a study of antimicrobial activity

Segala

Nista

Cordi

et al. 2015

Braz. J. Pharm. Sci.

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This study examines the antimicrobial activity of silver nanoparticles incorporated into nanostructured membranes made of cellulose acetate (CA) and blends of chitosan/poly-(ethylene oxide, CTS/PEO) and prepared by electrospinning. The formation of chemically synthesized Ag nanoparticles (AgNPs) was monitored by UV-visible spectroscopy (UV-Vis) and characterized by transmission electron microscopy (TEM). The size distribution of the AgNPs was measured by dynamic light scattering (DLS), with an average size of approximately 20 nm. The presence of AgNPs on the surface of electrospun nanofibers was observed by field emission electron microscopy (FEG) and confirmed by TEM. The antimicrobial activity of AgNPs incorporated into nanostructured membranes made of CA and CTS/PEO electrospun nanofibers was evaluated in the presence of both Gram-positive bacteria, such as Staphylococcus aureus ATCC 29213 and Propionibacterium acnes ATCC 6919, and Gram-negative bacteria, such as Escherichia coli ATCC 25992 and Pseudomonas aeruginosa ATCC 17933. Microbiological results showed that the presence of AgNPs in CA and CTS/PEO nanostructured membranes has significant antimicrobial activity for the Gram-positive bacteria Escherichia coli and Propionibacterium acnes. Uniterms:Electrospinning. Silver nanoparticles/antibacterial activity. Cellulose acetate. Chitosan.Neste trabalho avaliou-se a atividade antimicrobiana das nanopartículas de prata (AgNPs) incorporadas em membranas de acetato celulose (AC) e blendas de quitosana/poli-óxido de etileno (CTS/PEO) preparadas pelo método de eletrofiação. A formação das AgNPs previamente sintetizadas foi monitorada por UV-Vis e caracterizada por microscopia eletrônica de transmissão (MET). A distribuição de tamanho das AgNPs foi mensurada por espalhamento de luz dinâmico, com tamanho médio em torno de 20 nm. A presença das NPs na superfície das nanofibras eletrofiadas foi observada por microscopia eletrônica com emissão de campo (FEG) e confirmada por MET. A atividade antimicrobiana das membranas nanoestruturadas de AC e CTS/PEO foi avaliada pelo uso de bactérias Gram-positivas, tais como Staphylococcus aureus ATCC 29213 e Propionibacterium acnes ATCC 6919, e Gram-negativas, como Escherichia coli ATCC 25992 e Pseudomonas aeruginosa ATCC 17933. Os resultados microbiológicos mostraram a presença das AgNPs nas membranas de AC e CTS/PEO com significativa atividade antimicrobiana para Escherichia coli e Propionibacterium acnes, respectivamente.Unitermos: Eletrofiação. Nanopartículas de prata/atividade antimicrobiana. Acetato de celulose. Quitosana. 912 INTRODUCTIONThe use of metal nanoparticles in various medical and biotechnological applications is one of the most investigated areas in materials science. These applications require appropriate chemical functionalization of the nanoparticles with organic molecules or their incorporation into polymer matrices (Dallas, Sharma, Zboril, 2011). Among the numerous types of nanoparticles that have been used to decorate polymers, silver nanoparticles (AgNPs) ...

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Section: Synthesis Of Agnpsmentioning

confidence: 99%

Silver nanoparticles incorporated into nanostructured biopolymer membranes produced by electrospinning: a study of antimicrobial activity

Segala

Nista

Cordi

et al. 2015

Braz. J. Pharm. Sci.

Self Cite

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show abstract

“…[77,78] Dutra et al reported the preparation and characterization of the nanocomposite between a poly-{trans-[RuCl2(vpy)4]-styrene-divinylbenzene} or styrene-divinylbenzene-4-vinylpiridine matrix containing Ag NPs. [79] Non-aqueous polymerization using benzoyl peroxide as the initiator was the method used to prepare these materials. The Ag NPs were obtained through the chemical reduction using NaBH4 as reducing agent and sodium citrate as stabilizer.…”

Section: Ag Np Doped Ru Complex/styrene/divinylbenzene Copolymermentioning

confidence: 99%

From Ruthenium Complexes to Novel Functional Nanocomposites: Development and Perspectives

Segala¹,

Pereira²

2012

New Polymers for Special Applications

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Silver‐ and Nanosilver‐Based Plastic Technologies

Martínez‐Abad

2011

Antimicrobial Polymers

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Preparation and Characterization of the Novels Terpolymers of Poly-{trans-[RuCl2(vpy)4]-styrene-divinylbenzene} and Styrene-divinylbenzene-vinylpiridine impregnated with Silver Nanoparticles

Cited by 7 publications

References 27 publications

Silver nanoparticles incorporated into nanostructured biopolymer membranes produced by electrospinning: a study of antimicrobial activity

Silver nanoparticles incorporated into nanostructured biopolymer membranes produced by electrospinning: a study of antimicrobial activity

From Ruthenium Complexes to Novel Functional Nanocomposites: Development and Perspectives

Silver‐ and Nanosilver‐Based Plastic Technologies

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