Well-defined hyperbranched polystyrene (HB-PS) was synthesized combining cationic and anionic polymerizations. Lateral force microscopy revealed that the glass transition temperature T g at the surface of HB-PS was lower than the corresponding bulk value, and that the extent was dependent on the number of branching, namely the chain end concentration. Then, mixtures of HB-PS and linear PS were prepared. The surface and interfacial segregations of HB-PS were confirmed by secondary ion mass spectrometry in conjunction with neutron reflectivity. The result was in good accordance with a prediction by a self-consistent field calculation. Finally, it was concluded that the surface physical properties would be controlled by an addition of a little amount of HB-PS into PS.
|Number of pages||1|
|Publication status||Published - Dec 1 2005|
|Event||54th SPSJ Annual Meeting 2005 - Yokohama, Japan|
Duration: May 25 2005 → May 27 2005
|Other||54th SPSJ Annual Meeting 2005|
|Period||5/25/05 → 5/27/05|
All Science Journal Classification (ASJC) codes