Journal
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS
Volume 29, Issue 2, Pages 647-650Publisher
ELSEVIER
DOI: 10.1016/j.msec.2008.11.017
Keywords
Copolymer; Nanosilver; Antimicrobial effect; Polystyrene; Acrylic acid
Categories
Funding
- Fundacao de Apoio a Pesquisa Cientifica e Tecnologica do Estado de Santa Catarina (FAPESC)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- UNESC
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available