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Preparation of Au Nanoparticles and End‐ F unctionalized Poly(butadiene) Composites via Electrostatic Interaction
Author(s) -
Kanahara Masaaki,
Shimomura Masatsugu,
Yabu Hiroshi
Publication year - 2014
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201300190
Subject(s) - materials science , nanoparticle , viscosity , polymer , adsorption , matrix (chemical analysis) , dispersion (optics) , chemical engineering , glass transition , diffusion , aqueous solution , molecule , nanocomposite , composite material , polymer chemistry , nanotechnology , chemistry , organic chemistry , physics , engineering , optics , thermodynamics
Polymer‐inorganic nanoparticle (NP) composites are prepared by immersing preformed end‐functionalized poly (butadiene) (PB) films, which have a lower glass transition temperature than room temperature, in an aqueous dispersion of Au NPs. Depending on the viscosity of the PB matrix, the Au NPs show different distributions in the end‐functionalized PB matrix. In the high viscosity matrix, the Au NPs are immobilized at the surface of the end‐functionalized PB, whereas in the low viscosity matrix, the Au NPs are incorporated into the matrix and are well dispersed. This incorporation of Au NPs occurs dynamically in three steps: (1) adsorption of the Au NPs on the surface of the PB matrix through electrostatic interactions; (2) stabilization of the Au NPs by the end functional groups of the PB molecules; (3) the diffusion of the Au NPs into the PB matrix because of the low viscosity of the matrix.