Regensburg 2007 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

DS: Fachverband Dünne Schichten

DS 27: Polymer and Composite Films

DS 27.5: Vortrag

Freitag, 30. März 2007, 10:30–10:45, H32

Hydrophilic finishing of LDPE films using plasma treatment — •Dieter Ihrig¹, Jens Eggemann¹, Michael Licht¹, Ulrich Brunert¹, Hubert Paulus², and Karl-Heinz Müller² — ¹FH Suedwestfalen, Interdis. Zentr. f. Lebenswissenschaften, Frauenstuhlweg 31, 58644 Iserlohn — ²TWS an der FH Suedwestfalen, Lübecker Ring 2, 59494 Soest

Conventional plasma based procedures are able to generate polar groups on the surface of polymers. But they are not stable, because they link to other polymer chains inside the polymer. We have searched for a procedure to inhibit this cross-linking. For this we used an Oxygen or rather Carbon-dioxide Plasma, that are able to generate -COOH, -OH, -C=O groups. To stabilise this groups we coated the films with another layer. By this we are able to generate a lower contact angle on the film than on a film which was only plasmatreated. Also the coated groups are even more long-term stable.This technique is interesting for films which are prepared to be printed with water based lacquer; they can be stored longer before printing. If several areas of the polymer film are covered from the plasma, it is possible to structure the film with hydrophilic and hydrophobic areas. It will be given an introduction in winning water using radiation exchange. First results of field-tests will be presented. The changing contact-angle over the time on plasmatreated and films with stabilisation layer, and the results of XPS measurements will be shown. First results of a structure with hydrophobic and hydrophilic areas present the capability of the used Stenocara surface. The project is funded by the German Federal Ministry of Education and Research (FKZ 02WD0458)