Synthesis, characterization and antibacterial activity studies of poly-{styrene-acrylic acid} with silver nanoparticles

被引：59
作者：
da Silva Paula, Marcos Marques [1 ]
Franco, Cesar Vitorio [2 ]
Baldin, Mario Cesar [1 ]
Rodrigues, Larissa [1 ]
Barichello, Tatiana [3 ]
Savi, Geovana Dagostim [3 ]
Bellato, Luiz Felipe [4 ]
Fiori, Marcio Antonio [1 ]
da Silva, Luciano [4 ]
机构：
[1] Univ Extremo Sul Catarinense, PPGCS, Lab Sintese Complexos Multifuncionais, BR-8806000 Criciuma, SC, Brazil
[2] Univ Fed Santa Catarina, NanoSIN, Labo Sintese Inorgan & Mat Nanoparticulados, BR-88000000 Florianopolis, SC, Brazil
[3] Univ Extremo Sul Catarinense, PPGCS, Lab Fisiopatol Expt, BR-8806000 Criciuma, SC, Brazil
[4] Univ Vale ltajai, LAPEN, BR-88122000 Sao Jose, Brazil
来源：
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2009年 / 29卷 / 02期
关键词：
Copolymer; Nanosilver; Antimicrobial effect; Polystyrene; Acrylic acid; BIOLOGICAL-ACTIVITY; CRYSTAL-STRUCTURE;
D O I：
10.1016/j.msec.2008.11.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This work reports the preparation and characterization of copolymer poly-(styrene-acrylic acid) with monomeric ratio of styrene/acrylic acid of 9:1 using benzoyl peroxide as initiator and furthermore filled with nanosilver (25 ppm and 50 ppm) in water/acetone (1:40 v/v). The nanosilver emulsion was obtained from chemical reduction using NaBH4 as reducing agent and sodium citrate as the stabilizer. The preparation of nanosilver emulsion was monitored by the appearance of a Plasmon Resonant Absorption band in a UV-visible spectrophotometer and the particles sizes were observed through TEM. Microbiological studies were performed to investigate the antimicrobial activity of this new material against the microorganisms Escherichia coli (ATCC-25922) and Staphylococcus aureus (ATCC-6538), used as reference strains. The antimicrobial activity of the poly-(styrene-acrylic acid) filled with nanosilver was confirmed by the presence of an inhibition halo of the bacterial growth in seeded Culture media, but was not found with the poly (styrene-acrylic acid) alone. The present work suggests that silver ions are released from the polymeric matrix to the culture media and have the ability to tulle the Ag+ ions released by controlling the amount of Ag nanoparticles embedded in the composite. (C) 2008 Elsevier B.V. All rights reserved.
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收藏
页码：647 / 650
页数：4
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