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Nanoconfinement of a polymer film affords a reduction of the glass transition temperature (Tg) and effective viscosity (ηeff). Early on, Prof. Tisato Kajiyama pioneered the idea of enhanced polymer mobility at the free surface. This concept is now well established, and accounts for the Tg and ηeff reductions of thin polymer films. To pay tribute to Prof. Kajiyama's seminal contribution, it is fitting...
Monodisperse silica-coated polystyrene core–shell nanoparticles (CSNs) and hollow silica nanospheres with a well-defined morphology and pH sensitivity were prepared using spherical polyelectrolyte brushes (SPBs) as templates. The anionic poly(acrylic acid) SPBs attached on PS cores played a pivotal role in directing and controlling the coating of silica by the Stöber method. A smooth silica shell...
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