INIFTA   05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Surface, thermal, and mechanical properties of composites and nanocomposites of polyurethane/PTFE nanoparticles
Autor/es:
ANBINDER, PABLO; PERUZZO, PABLO; DE SIERVO, ABNER; AMALVY, JAVIER
Revista:
JOURNAL OF NANOPARTICLE RESEARCH
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2014 vol. 16
ISSN:
1388-0764
Resumen:
Films from blends of polyurethane and
nano-polytetrafluoroethylene aqueous dispersions
(PU/nanoPTFE) were prepared, and the effect of the
addition of different amounts of PTFE nanoparticles
(50 nm) was studied. The changes in the superficial
properties of the films were studied by means of XPS,
ATR/FTIR, and contact angle measurements. SEM
and TEM results are also included. The contact angle
values confirm the surface hydrophobicity of composite
films. Even though nanoparticles are present in
the bulk, higher concentrations of particles appear at
the surface in samples with lower nanoPTFE content
(up to 10 wt%), as revealed by XPS. Higher amounts
of nanoPTFE particles cause aggregation. The
mechanical and thermal properties of composites are
also discussed.