We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Thin Film Nanocomposites Based on SBM Triblock Copolymer and Silver Nanoparticles: Morphological and Dielectric Analysis.
- Authors
Barandiaran, Irati; Gutierrez, Junkal; Tercjak, Agnieszka; Kortaberria, Galder
- Abstract
Hybrid organic/inorganic thin film nanocomposites based on poly(styrene)- b-poly(butadiene)- b-poly(methyl methacrylate) triblock copolymer and silver nanoparticles are prepared and characterized. In order to improve the compatibility of nanoparticles with the polymeric matrix, their surface is modified with dodecanethiol surfactant, which enables a good dispersion of nanoparticles through the triblock copolymer, without the formation of aggregates. By atomic force microscopy (AFM), the dispersion level of nanoparticles is analyzed, together with their effect on the thin film surface morphology, for nanocomposites up to 15 wt% of nanoparticles. Dielectric properties of nanocomposites are studied by dielectric relaxation spectroscopy (DRS), analyzing the effect of nanoparticles on dielectric properties. Even if conductivity and permittivity of composites increase with nanoparticle content, percolation threshold is found to be at around 15% in volume. Morphologically analyzed nanocomposites are, in this way, below the threshold.
- Subjects
THIN films; NANOCOMPOSITE materials; SILVER nanoparticles; COPOLYMERS; SURFACE morphology
- Publication
Macromolecular Materials & Engineering, 2017, Vol 302, Issue 10, pn/a
- ISSN
1438-7492
- Publication type
Article
- DOI
10.1002/mame.201700169