Evaluation of the permeability of silver nanoparticles in polymer films of sulfonated polystyrene-co-acrylic acid
Por:
da Silva Paula, M.M., de Souza, H.J., Búrigo, C., Langbehn, J.T., Baesso, A.S., da Silva, L., da Silva, P.R.P., Benavides, R., Alonso-Núñez, G., Collins, V.
Publicada:
5 may 2017
Categoría:
Colloid and surface chemistry
Resumen:
Nanoparticulate materials exhibit interesting physicochemical properties
due to its high surface area and reactivity. They are promising for
application in the development of catalytic systems, electronic and
photovoltaic devices, fuel cells, sensors, biomaterials, among others.
Silver nanoparticles (AgNPs) are recognized by their biocidal action,
which makes them attractive in the manufacture of biomedical devices,
including skin patches with antimicrobial properties. However, there are
very few studies on the permeation of nanoparticles in polymer films and
tissues. In this works, we present the results of Ag+ ion and silver
nanoparticles permeation studies in poly -[St-co-AA] and
poly-[StS-co-AA] (StS = styrene sulfonated) membranes using
electrochemical techniques. Polymeric films were characterized by
spectroscopic technics and atomic force microscopy. Our findings
demonstrated that the sulfonated copolymer in the medium is more
permeable to the diffusion of AgNPs when compared to the non-sulfonated
film. Regarding the Ag+ ion, the presence of the polymeric film in the
electrodes, does not affect the E-1/2 of the redox process Ag+/Ag-0).
(C) 2017 Elsevier B.V. All rights reserved.
Filiaciones:
da Silva Paula, M.M.:
Laboratório de Tecnologia Farmacêutica, Programa de Pós-Graduação em Ciências da Saúde, Universidade do Sul de Santa Catarina, Tubarão, SC, Brazil
de Souza, H.J.:
Laboratório de Síntese de Complexos Multifuncionais, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
Búrigo, C.:
Laboratório de Síntese de Complexos Multifuncionais, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
Langbehn, J.T.:
Laboratório de Síntese de Complexos Multifuncionais, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
Baesso, A.S.:
Laboratório de Síntese de Complexos Multifuncionais, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
da Silva, L.:
Arranjo Promotor de Inovação em Nanotecnologia & API.nano, Campus Universitário, UFSC, Setor C – Pantanal, Florianópolis, SC, Brazil
da Silva, P.R.P.:
Laboratório de Síntese de Complexos Multifuncionais, Universidade do Extremo Sul Catarinense, Criciúma, SC, Brazil
Benavides, R.:
Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna H. 140, Saltillo, Coahuila, Mexico
Alonso-Núñez, G.:
Universidad Nacional Autónoma de México, Centro de Nanociencias y Nanotecnología, Km. 107 Carretera Tijuana-Ensenada, Ensenada, BC, Mexico
Collins, V.:
Departamento de Materiales Nanoestructurados, Centro de Investigación en Materiales Avanzados S.C., Miguel de Cervantes 120, Chih., Chihuahua, Mexico
|