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UID:69e24a6fdc16a
DTSTAMP:20260417T105751
DTSTART:20120412T120000
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20120412T133000
URL:https://murmitoyen.com/events/vanille/udem/detail/110594
LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, 
 chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2
SUMMARY:Conférence CRMAA avec le professeur Walter Richtering (RWTH Aachen
 )
DESCRIPTION:Titre : Multi-Sensitive Microgels: Particles with Special Prope
 rties in Solution as well as in Pickering Emulsions.Cette conférence ser
 a prononcée par le professeur Walter Richtering de l'institut de chimie 
 physique de l'Université RWTH Aachen. Elle est commanditée par le Centre
  de recherche sur les materiaux auto-assemblés (CRMAA) et sera donnée e
 n anglais.Résumé : Multi-sensitive microgels have special properties th
 at can be controlled via the chemical composition as well as via the morp
 hology of the particle. Depending on the polymerization procedure one can
  obtain 'simple' copolymer microgels or particles with core-shell or nanop
 hase separated morphology. The structure of the particles is determined m
 ainly by mean of light\, X-ray and neutron scattering experiments. We wil
 l discuss\, how charge interaction can be exploited for uptake and releas
 e of polyelectrolytes and show that both adsorption and absorption can oc
 cur. The hydrogen bonding pattern of polyacrlyamides can be used to influe
 nce the temperature dependent particle swelling in aqueous solution but a
 lso the cononsolvency behavior in water-methanol mixtures. Finally we wi
 ll report on the unique behavior of microgels at fluid interfaces. Microge
 ls are used to prepare stimuli-sensitive emulsions\, the stability of whi
 ch can be made pH-sensitive. However\, the stability is not governed by e
 lectrostatic interactions and it is even possible to prepare stable emuls
 ions with oppositely charged droplets.Information supplémentaire 
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