RT Journal Article
T1 PVDF/TiO2 nanocomposites prepared by solution blow spinning: surface properties and their relation with S. Mutans adhesion
A1 González Benito, Francisco Javier
A1 Teno Díaz, Jorge
A1 Gonzalez Gaitano, Gustavo
A1 Xu, S.
A1 Chiang, M.Y.
AB Thermoplastic nanocomposite materials with potential bactericide properties were prepared and their surface properties and adhesion to Streptococcus mutans, S. mutans, were characterized. Solution blow spinning was successfully used to prepare films with a fiber-like structure on the surface of nanocomposites based on Polyvinylidene fluoride, PVDF, filled with well dispersed TiO2 nanoparticles. PVDF/TiO2 nanocomposites were prepared varying the nanoparticles content (0%, 1%, 2%, 5% and 10% by weight). In order to understand the influence of the presence of TiO2 nanoparticles and the final surface properties on the adhesion of S. mutans to the materials, a deep characterization was carried out focusing on the morphology, roughness, surface free energy from contact angle measurements and cell adhesion by single cell force spectroscopy. It was observed that the uniform dispersion of the nanofiller arose from nanoparticles embedded in the polymer when fibers were created during the blow spinning process. TiO2 content influenced the topography of the films probably due to a direct effect on the solvent evaporation rate. Although this factor greatly conditioned the roughness of the samples and therefore the surface free energy, S. mutant adhesion on the substrates under study was concluded to be more dependent on the specific interactions with the surface polar groups of the material.
PB Elsevier
SN 0142-9418
YR 2017
FD 2017-04
LK https://hdl.handle.net/10016/32965
UL https://hdl.handle.net/10016/32965
LA eng
NO Authors gratefully acknowledge financial support of Ministerio de Economía y Competitividad (grant number MAT2014-59116-C2). Furthermore, the authors greatly appreciate The Ministerio de Educación Cultura y Deporte of Spain in the frame of "Modalidad A del Programa de estancias de movilidad de profesores e investigadores en centros extranjeros de enseñanza superior e investigación" for granting the research proposal of Javier González-Benito (Ref.: PR2015-00018) to do short stay at the National Institute of Standards and Technology, NIST (USA).
DS e-Archivo
RD 27 jul. 2024