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

Content Provider	Springer Nature Link
Author	Meléndrez Castro, M. F. Cárdenas Triviño, G. Morales, J. Díaz Visurraga, J. Cruzat Contreras, C.
Copyright Year	2008
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.
Starting Page	355
Ending Page	366
Page Count	12
File Format	PDF
ISSN	01700839
Journal	Polymer Bulletin
Volume Number	62
Issue Number	3
e-ISSN	14362449
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-12-11
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nanocomposites Photoacoustic properties Colloids Polystyrene matrix Physical Chemistry Characterization and Evaluation of Materials Soft Matter, Complex Fluids Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Condensed Matter Physics Polymers and Plastics

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