Berlin 2014 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 25: Low Temperature Plasmas III

P 25.5: Vortrag

Donnerstag, 20. März 2014, 17:45–18:00, SPA HS201

Hydrophilic finishing of PE and PP films using plasma treatment — •Dieter F. Ihrig, Ronny Brand, Marius Glade, Carl Schulz, and Sascha Steffen — FH Suedwestfalen, Interdiciplinary Centre for Lifesciences, Frauenstuhlweg 31, 58644 Iserlohn, Germany

To harvest atmospheric water (dew) we use polymer films (LDPE/LLDPE) which allows cooling down a device just by looking through the atmospheric window at 8 to 13 micron into the cold upper atmosphere. First results from such tools are published in [1]. Problems are resulting of the very high hydrophobic properties of PE. Conventional plasma based procedures are able to generate polar groups on the surface of polymers, but they are not stable. To produce stable coatings on PE and PP we used a plasma polymerization process with HMDSO, TEOS or GMA. By this we are able to generate a contact angle on the film of 55 to 70 degr. which is stable over several months. Such a technique is also interesting as a pretreatment for printing on films with water based lacquer. It will be given an introduction in winning water using radiation exchange and results of field-tests. The changing contact-angle over the time on plasma treated films will be shown. Results of ATR-IR-spectroscopy and AFM are given. The project was funded by the German Federal Ministry of Education and Research (FKZ 02WD0458) [1] Jour. Phys. Chem. of the Earth, Elsevier 33, 86 - 91 (2008)