TY - JOUR A1 - Weidner, Steffen A1 - Kühn, Gerhard A1 - Just, Ulrich T1 - Characterization of oligomers in poly(ethylene terephthalate) by matrix-assisted laser desorption/ionization mass spectrometry PY - 1995 SN - 0951-4198 SN - 1097-0231 IS - 9 SP - 697 EP - 702 PB - Wiley CY - Chichester AN - OPUS4-11278 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian A1 - Wigant, L. A1 - Unger, Wolfgang A1 - Lippitz, Andreas A1 - Weidner, Steffen A1 - Kühn, Gerhard A1 - Geng, Sh. A1 - Erdmann, J. A1 - Gorsler, H.-V. T1 - Plasmavorbehandlungen von Polymeroberflächen T2 - 2. Freiberger Polymertag CY - Freiberg DA - 1995-05-30 PY - 1995 SP - 17 Seiten CY - Freiberg AN - OPUS4-7014 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen A1 - Kühn, Gerhard A1 - Just, Ulrich A1 - Werthmann, Barbara A1 - Decker, Renate A1 - Schwarz, Bärbel A1 - Borowski, Renate T1 - MALDI/MS - A New Technique in Characterizing Chemical Heterogeneity of Degradation Products of Poly(Ethylene Terephthalate)s T2 - International GPC Symposium '96 CY - San Diego, CA, USA DA - 1996-09-08 PY - 1996 SP - 632 EP - 651 CY - Milford, Mass. AN - OPUS4-11905 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Weidner, Steffen A1 - Kühn, Gerhard A1 - Friedrich, Jörg Florian A1 - Unger, Wolfgang A1 - Lippitz, Andreas T1 - Plasmaoxidative Degradation of Polymers Studied by Matrix-assisted Laser Desorption/Ionization Mass Spectrometry PY - 1996 SN - 0951-4198 SN - 1097-0231 VL - 10 SP - 727 EP - 732 PB - Wiley CY - Chichester AN - OPUS4-7004 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kühn, Gerhard A1 - Weidner, Steffen A1 - Just, Ulrich A1 - Hohner, G. T1 - Characterization of technical waxes - Comparison of chromatographic techniques and matrix-assisted laser-desorption/ionization mass spectrometry N2 - Technical waxes and paraffins were investigated using supercritical fluid chromatography (SFC), matrix-assisted laser-desorption/ionization mass spectrometry (MALDI-MS) and size-exclusion chromatography (SEC). SEC enables the simultaneous determination of molecular masses up to high values and molecular mass distributions. The resolution of homologous species, however, is poor. In this respect the use of SFC is advantageous. Proper resolution of homologues may be provided up to Mr~1200 without great difficulty. To compare these chromatographic results MALDI-MS was applied for the determination of molecular masses and mass distributions in technical waxes for the first time. Using reflectron mode excellent MALDI mass spectra could be achieved in the molecular mass range up to 1000 Da. The mean values of the molecular masses calculated by MALDI-MS were in sufficient agreement with those of SFC. In the linear mode of MALDI-MS molecular masses could be determined to nearly 3000 Da. Beyond this mass range SEC still remains the method of choice. Advantages and difficulties of the used methods are discussed in this paper. PY - 1996 U6 - https://doi.org/10.1016/0021-9673(95)01255-9 SN - 0021-9673 VL - 732 IS - 1 SP - 111 EP - 117 PB - Elsevier CY - Amsterdam AN - OPUS4-11347 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Weidner, Steffen A1 - Holländer, A. A1 - Kühn, Gerhard T1 - Matrix-assisted Laser Desorption/Ionization Mass Spectrometry of C36- Alkane degradated by Vacuum Ultraviolet Radiation PY - 1997 SN - 0951-4198 SN - 1097-0231 VL - 11 SP - 447 EP - 450 PB - Wiley CY - Chichester AN - OPUS4-11095 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühn, Gerhard A1 - Just, Ulrich A1 - Weidner, Steffen A1 - Werthmann, Barbara T1 - MALDI-TOF-MS zur Polymercharakterisierung T2 - Berliner Polymerentage 1997 CY - Berlin, Germany DA - 1997-10-09 PY - 1997 AN - OPUS4-11126 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian A1 - Schulz, Eckhard A1 - Weidner, Steffen A1 - Kühn, Gerhard T1 - Improvement in Mechanical Strength of Fibre Polymer Composites by Fibre Pretreatment in Low-Pressure Plasmas T2 - Vortragsbände des 8. Internationalen Techtextil-Symposiums 1997 CY - Frankfurt am Main, Deutschland DA - 1997-05-12 PY - 1997 SP - 1(?) EP - 16(?) PB - Messe Frankfurt CY - Frankfurt am Main AN - OPUS4-7286 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian A1 - Schulz, Eckhard A1 - Weidner, Steffen A1 - Kühn, Gerhard T1 - Verbesserungen der mechanischen Festigkeiten von Faser-Polymer-Verbundwerkstoffen durch Vorbehandlung der Fasern im Niederdruckplasma T2 - Vortragsbände des 8. Internationalen Techtextil-Symposiums 1997 CY - Frankfurt am Main, Deutschland DA - 1997-05-12 PY - 1997 VL - 8 SP - 1(?) EP - 16(?) PB - Messe Frankfurt CY - Frankfurt am Main AN - OPUS4-7287 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Friedrich, Jörg Florian A1 - Unger, Wolfgang A1 - Lippitz, Andreas A1 - Koprinarov, Ivaylo A1 - Weidner, Steffen A1 - Kühn, Gerhard ED - Schindel-Bidinelli, E. T1 - Umweltfreundliches Metallisieren von Kunststoffen durch Plasmavorbehandlung in einem geschlossenen Reaktor T2 - Swissbonding 97 ; 11. Internationales Symposium Klebtechnik und Umwelt ; 11th International Symposium Bonding and Sealing Technology CY - Rapperswil, Schweiz DA - 1997-05-26 PY - 1997 SP - 1(?) EP - 3(?) PB - SWIBOTECH CY - Rorbas AN - OPUS4-6994 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -