Time: 4:00 p.m.
Place: ICAMS Seminar Room UHW 11/1102
Petra Uhlmann, Leibniz-Institut für Polymerforschung, Dresden, Germany
Coating symbolizes a very broad and complex technological but also scientiﬁc issue. A diversity of scientific problems is arising when dealing with organic coating processes aiming at sustainable coated substrates with speciﬁc surface functionalities. The physicochemistry of a coating process involves wetting, spreading, and ﬁlm formation and in the case of chemically grafted coatings also the formation of stable bonds between substrate and polymer coating, to guarantee adhesion and the desired performance.
The importance of the investigation of physico-chemical values for an industrial coating process will be demonstrated by describing the inﬂuence of ﬂow additives on surface tension and viscosity of the polymer melt during ﬁlm formation of a powder coating. As a second example the manufacturing of covalently attached ultrathin polymer films (polymer brushes) on oxidic surfaces and the adjustment of distinct functionalities, will be described. The application of very thin polymeric ﬁlms becomes more and more important because they oﬀer the ability to add an additional surface functionality without changing the optical performance of the substrate.