Encapsulation of Silver Nanoparticles in a Polystyrene Matrix by Miniemulsion Polymerization and Its Antimicrobial Activity. (27th June 2012)

• Record Type: Journal Article
• Authors: Betancourt-Galindo, R.; Cabrera Miranda, C.; Puente Urbina, B. A.; Castañeda-Facio, A.; Sánchez-Valdés, S.; Mata Padilla, J.; García Cerda, L. A.; Perera, Y. A.; Rodríguez-Fernández, O. S.
• Other Names: Baia L. Academic Editor.; Hsu C.-L. Academic Editor.
• Is Part Of: ISRN nanotechnology. Volume 2012(2012)
• Publication Date: 2012-06-27
• Subjects: Nanotechnology -- Periodicals; Nanotechnology; Nanotechnology; Electronic journals; Periodicals; Electronic journals; 620.5
• DOI: 10.5402/2012/186851
• Languages: English
• ISSNs: 2090-6064

Abstract

Abstract : Surface-modified silver nanoparticles (NAg) were encapsulated into a polystyrene (PS) matrix by in situ miniemulsion polymerization. Silver nanoparticles were modified with 3-aminopropyltrimethoxysilane (APTMS) that acts as a coupling agent and costabilizer in the polymerization reaction. The PS-Nag nanocomposites synthesized via miniemulsion polymerization were made at two different concentrations of the initiator (0.7 and 2.5 g/L in H2 O); at higher concentration of the initiator the conversion and efficiency of encapsulation increases, and the average particle size decreases. The PS-NAg composites showed excellent antimicrobial performance toward bacteria such as Escherichia coli and Staphylococcus aureus .