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Advanced scattering techniques for in situ studies - Fast drying kinetics in polymer thin films

Lundi 3 mars 2014 10:30 - Duree : 1 heure
Lieu : Room 500-501, Central Building, ESRF - 6 Rue Jules Horowitz - Grenoble

Orateur : Jan PERLICH (DESY, Germany)

The unique characteristics of 3rd generation synchrotron sources provide excellent possibilities for the study of structural properties of a wide range of material systems by means of advanced X-ray scattering techniques. The high photon flux in combination with a moderately micro-focused beam provide ideal conditions for in situ studies of dedicated fabrication processes of these material systems while locally resolving structural formation mechanisms in real-time. Material systems based on polymer thin films have widespread applications and are utilized as functional layers in various technological fields such as photovoltaics, microelectronics, optoelectronics, sensors, packaging and biomedical. The fabrication of these polymer films from solution is performed by casting, printing, painting, doctor-blading, dip-, spin- or spray-coating. Two studies of selected coating techniques, i.e. dip- and spray-coating, most relevant for technological coating processes are presented. These processes are monitored in situ real-time by microbeam small angle X-ray scattering in reflection geometry, i.e. GISAXS, performed at the synchrotron beamline P03 (MiNaXS) of PETRA III (DESY) in Hamburg. The dedicated in situ setups provide a time resolution in the millisecond regime enabling the observation of the fast drying kinetics and structural formation upon drying. The comprehensive knowledge of the drying kinetics and the formation process shall provide significant information to fabricate functional polymer layers with desired characteristics. Finally, a brief outlook towards future perspectives and possible methodical applications is given.

Contact : eva.jahn@esrf.fr

Discipline évènement : (Physique)
Entité organisatrice : (ESRF)
Nature évènement : (Séminaire)
Evènement répétitif : (Séminaire ESRF)
Site de l'évènement : Polygone scientifique

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