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Size control of the poly (1,4-phenylene-5-hydroxyisophthalamide) hollow spheres was examined by tuning the polymerization condition, focusing on concentration, temperature and solvent. Higher concentration lowered the diameter owing to the higher degree of super-saturation for nucleation. Temperature drop during the polymerization just before the nucleation was so effective to make the diameter smaller...
Hyper-branched polystyrenes (HBPS) were synthesized. The bulk glass transition temperature (T g ) measured by differential scanning calorimetry (DSC) for two kinds of HBPS with an equivalent M w , which were fractionated from different lots, were different, being respectively higher and lower than that of the corresponding linear polystyrene (PS). Infrared spectroscopy revealed that...
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