TY - CONF A1 - Friedrich, Jörg Florian T1 - Introduction of irregularieties into plasma polymers by radiative and autooxidative processes T2 - ISPC 17 CY - Toronto, Canada DA - 2005-08-07 PY - 2005 AN - OPUS4-7345 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Koprinarov, Ivaylo A1 - Friedrich, Jörg Florian A1 - Lippitz, Andreas A1 - Unger, Wolfgang ED - Olefjord, I. ED - Nyborg, L. ED - Briggs, D. T1 - X-ray Absorption Spectroscopy (NEXAFS) of PET Surfaces T2 - 7th European Conference on Applications of Surface and Interface Analysis CY - Göteborg, Sweden DA - 1997-06-16 PY - 1997 SN - 0-471-97827-2 SP - 755 EP - 759 PB - Wiley CY - Chichester AN - OPUS4-7288 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, P. A1 - Friedrich, Jörg Florian T1 - Gezielte chemische Funktionalisierung von Polymermaterialien T2 - 4. Wörlitzer Workshop "Funktionelle Schichten" CY - Wörlitz, Deutschland DA - 2003-05-27 PY - 2003 VL - 4 SP - 1(?) EP - 7(?) PB - EFDS CY - Dresden AN - OPUS4-7289 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Friedrich, Jörg Florian A1 - Mix, Renate A1 - Kühn, Gerhard T1 - Adhesion of metals to plasma-induced functional groups at polymer surfaces N2 - The peel strength of aluminium to polypropylene and poly(tetrafluoroethylene) was determined in dependence on the type and the concentration of functional groups on the polymer surface. For this purpose the polymer surface was equipped with monotype functional groups. The first method to produce monotype functionalized surfaces was an introduction of O functional groups using an oxygen plasma treatment and converting these groups to OH groups applying a wet chemical reduction. In result of this two-step treatment the hydroxyl group concentration at the polymer surface could be increased from 3–4 to 10–14 OH groups/100 C atoms. The second method consists in the deposition of a 150 nm adhesion-promoting layer of plasmapolymers or copolymers onto the polymer surface using the pulsed plasma technique. For that purpose functional groups carrying monomers as allyl alcohol, allylamine and acrylic acid were used. Applying the plasma-initiated copolymerization and using neutral “monomers” like ethylene or butadiene the concentration of the functional groups was varied. A correlation of peel strength with the ability of forming chemical interactions between Al atoms and functional groups was found: COOH > OH >> NH2 > H(CH2–CH2). KW - Peel strength KW - Aluminium KW - Polypropylene KW - Poly(tetrafluoroethylene) KW - Pulsed plasma KW - Allyl alcohol KW - Allylamine KW - Acrylic acid KW - Plasma surface treatment KW - Adhesion PY - 2005 SN - 0257-8972 VL - 200 IS - 1-4 SP - 565 EP - 568 PB - Elsevier Science CY - Lausanne AN - OPUS4-10897 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Friedrich, Jörg Florian A1 - Mix, Renate A1 - Kühn, Gerhard ED - Possart, W. T1 - Contribution of chemical interactions to the adhesion between evaporated metals and functional groups of different types at polymer surfaces PY - 2005 SN - 3-527-31263-3 SP - 265 PB - Wiley-VCH CY - Weinheim AN - OPUS4-10898 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - Kunststoffkorrosion durch Polymerabbau - Früherkennung und zeitraffende Prognose T2 - 1. Thüringer Grenz- und Oberflächentage CY - Jena, Deutschland DA - 2005-09-15 PY - 2005 SP - 33 EP - 50 PB - Innovent CY - Jena AN - OPUS4-10899 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Meyer-Plath, Asmus A1 - Mix, Renate A1 - Kühn, Gerhard A1 - Friedrich, Jörg Florian ED - d'Agostino, R. T1 - The Potential of Surface Radicals for Polymer Functionalization T2 - 16th International Symposium on Plasma Chemistry (ISPC-16) CY - Taormina, Italy DA - 2003-06-22 PY - 2003 IS - CD-ROM PB - Dep. of Chemistry, Univ. CY - Bari AN - OPUS4-2612 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Mierczynska, A. A1 - Friedrich, Jörg Florian A1 - Maneck, Heinz-Eberhard A1 - Boiteux, G. A1 - Jeszka, J.K. T1 - Segregated network polymer/carbon nanotubes composites N2 - In this work we present the preparation of conductive polyethylene/carbon nanotube composites based on the segregated network concept. Attention has been focused on the effect of decreasing the amount of filler necessary to achieve low resistivity. Using high- and low-grade single-walled carbon nanotube materials we obtained conductive composites with a low percolation threshold of 0.5 wt.% for high-grade nanotubes, about 1 wt% for commercial nanotubes and 1.5 wt% for low-grade material. The higher percolation threshold for low-grade material is related to low effectiveness of other carbon fractions in the network formation. The electrical conductivity was measured as a function of the single-walled carbon nanotubes content in the polymer matrix and as a function of temperature. It was also found that processing parameters significantly influenced the electrical conductivity of the composites. Raman spectroscopy was applied to study single wall nanotubes in the conductive composites. KW - Polymer KW - Single-walled carbon nanotubes KW - Composite KW - Segregated network KW - Sintering KW - Conductivity KW - Raman spectroscopy PY - 2004 DO - https://doi.org/10.2478/BF02475579 SN - 1644-3624 SN - 1895-1066 VL - 2 IS - 2 SP - 363 EP - 370 PB - Central European Science Journals CY - Warsaw AN - OPUS4-3583 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - Pulsed plasma initiated homo and copolimerisation - deposition rates and plasma diagnostic in dependence on pulse length and frequency T2 - ISPC-16 CY - Taormina, Italy DA - 2003-06-22 PY - 2003 AN - OPUS4-4667 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - Comparison of different plasmachemical processes for the formation of monosort functionalised polymer surfaces T2 - ISPC-16 CY - Taormina, Italy DA - 2003-06-22 PY - 2003 AN - OPUS4-4668 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - Pulsed plasma initiated homo and copolymerisation - characterization of thin plasma polymer layers by dielectric relaxation spectroscopy T2 - ISPC-16 CY - Taormina, Italy DA - 2003-06-22 PY - 2003 AN - OPUS4-4671 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian T1 - Complex organic thin films for optoelectronics: combined depossition techniques T2 - ECASIA `03 CY - Berlin, Germany DA - 2003-10-06 PY - 2003 AN - OPUS4-4674 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -