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Published in: Polymer Bulletin 3/2009

01-03-2009 | Original Paper

Synthesis and study of photoacoustic properties of (Pd/TiO2)/polystyrene nanocomposites

Authors: M. F. Meléndrez Castro, G. Cárdenas Triviño, J. Morales, J. Díaz Visurraga, C. Cruzat Contreras

Published in: Polymer Bulletin | Issue 3/2009

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Abstract

In this work, nanocomposites (Ncs) from Pd nanoparticles and TiO2 (Pd-Nps-TiO2) were supported on a polystyrene matrix (PS). Chemical liquid deposition, solvated metal atom dispersion and in situ polymerization were used in order to synthesize these Ncs. Colloid and nanocomposite characterization were performed by TEM, SEM, EDX, SAED and TGA. TEM analysis revealed a particle size of 7 nm for Coll-Styrene and 11 nm for Pd-Nps supported on TiO2 after radical polymerization. SAED showed phases corresponding to both metallic Pd and TiO2 anatase in the polymeric matrix. Molecular weight (MW) was determined by viscosimetric method. MW varies according to the initiator concentration and nanoparticle amount used for polymerization. The amount of nanoparticles increased the decomposition temperature of the Ncs by 10 °C, improving the thermal stability of these hybrid materials. Photoacoustic properties were evaluated in order to determine the effect of nanoparticles on thermal diffusivity (α) inside the matrix. Significant values of (α) were found for Ncs with Pd-Nps in contrast to PS and Pd/TiO2 Ncs. Structural aspects and colloidal aggregation of Ncs were also studied.

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Metadata
Title
Synthesis and study of photoacoustic properties of (Pd/TiO2)/polystyrene nanocomposites
Authors
M. F. Meléndrez Castro
G. Cárdenas Triviño
J. Morales
J. Díaz Visurraga
C. Cruzat Contreras
Publication date
01-03-2009
Publisher
Springer-Verlag
Published in
Polymer Bulletin / Issue 3/2009
Print ISSN: 0170-0839
Electronic ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-008-0024-9

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