Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/86118
Type: Artigo
Title: Surface, thermal, and mechanical properties of composites and nanocomposites of polyurethane/PTFE nanoparticles
Author: Anbinder, P. S.
Peruzzo, P. J.
Siervo, A. de
Amalvy, J. I.
Abstract: 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.
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.
Subject: Materiais compostos
Propriedades mecânicas
Nanopartículas
Espectroscopia de fotoelétrons por raios-X
Country: Holanda
Editor: Springer
Citation: Journal Of Nanoparticle Research. Kluwer Academic Publishers, v. 16, n. 8, p. - , 2014.
Rights: fechado
Identifier DOI: 10.1007/s11051-014-2529-5
Address: https://link.springer.com/article/10.1007/s11051-014-2529-5
Date Issue: 2014
Appears in Collections:IFGW - Artigos e Outros Documentos

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