Regensburg 2016 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 47: Poster: Interfaces and Thin Films

CPP 47.8: Poster

Mittwoch, 9. März 2016, 18:15–21:00, Poster B2

The formation of micro-porous structure in different polystyrene-based polymers — •Farid Farajollahi, Masoud Amirkhani, and Othmar Marti — Institute of Experimental Physics, University of Ulm, 89069 Ulm, Germany

Breath figure technique is a self-assembly method to produce porous structure on the surface of polymers under the humid condition. The water condensation creates several small droplets, which can be used as templates to make the porous structure after drying the polymer. Generally, hydrophobic polymers such as polystyrene cannot form the close-packed porous pattern in most cases. Here, we developed a new strategy to employ several polystyrene-based polymers to make porous honeycomb structures. The proper concentration of methanol in the polymer solution can improve the stability of water droplets during porous pattern formation. The effect of polymer molecular weight and monocarboxy end terminated group in the morphology of the patterns are investigated by the scanning electron microscopy. In addition, Voronoi diagram is utilized to compare the regularity of the different patterns. Finally, the viscosity measurement is performed to find the relation between pattern morphologies and the initial viscosity of the solutions.