Synthesis of highly monodisperse silica particles by addition of anionic surfactants

Polyester textile functionalisation through incorporation of pH/thermo-responsive microgels. Part I: Microgel preparation and characterisation

“…This is expected because when the temperature rises above the microgel lower critical solution temperature, the thermo-sensitive microparticles de-swell (smaller volume) but the amount of charges on each microparticle remains the same. Therefore, the charge density of PNIAA microparticles is higher at 40 • C than at 20 • C. Consequently, the total electrophoretic mobility of microgels M and CM which is inversely proportional to the microparticle size [41,51] is higher at 40 • C. These results are supported by data reported for poly-NIPAAm microgels [1,41], even though the increase in electrophoretic mobility is not of the same order of magnitude. Since the electrophoretic mobility of microgels depends also on ionic strength [41,52], this observation can be attributed to the fact that the measurements presented here were performed in buffer solutions and therefore the ionic strength of the samples was possibly high enough to restrain the increased mobility of the charged species at 40 • C.…”

Advanced microgel-functionalized polyester textiles adaptive to ambient conditions

“…Therefore, the charge density of PNIAA microparticles is higher at 40°C than at 20°C. Consequently, the total electrophoretic mobility of microgels M and CM -which is inversely proportional to the microparticle size (Daly et al 2000;Ha et al 2010) -is higher at 40°C.…”