Artículos de revistas
Surface, Thermal, And Mechanical Properties Of Composites And Nanocomposites Of Polyurethane/ptfe Nanoparticles
Registro en:
Journal Of Nanoparticle Research. Kluwer Academic Publishers, v. 16, n. 8, p. - , 2014.
13880764
10.1007/s11051-014-2529-5
2-s2.0-84903428897
Autor
Anbinder P.S.
Peruzzo P.J.
De Siervo A.
Amalvy J.I.
Institución
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. © 2014 Springer Science+Business Media. 16 8
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