TY - JOUR A1 - Gross, J.H. A1 - Weidner, Steffen T1 - Influence of Electric Field Strength and Emitter Temperature on Field Desorption Mass Spectra of Polyethylene Oligomers N2 - The influence of electric field strength and emitter temperature on dehydrogenation and C–C cleavage in field desorption (FD) mass spectrometry of polyethylene (PE) oligomers of average molecular weights ranging from 500 to 2000 is examined. Low mass oligomers yield molecular weight (MW) distributions that are basically in accordance with results from gel-permeation chromatography. For these materials, dehydrogenation can be greatly reduced by reduction of the emitter potential. Furthermore, the influence of emitter potential on MW distributions indicates the occurrence of field-induced C–C cleavages. Reliable MW distributions are more difficult to obtain from higher mass oligomers by FD-MS because of the need for higher field strength and higher emitter temperatures to effect their desorption/ionization. Experiments reveal that the application of FD-MS to PE oligomers is limited not only by field-induced but also by thermally-induced fragmentations. Even then, FD mass spectra contain valuable information on mass range and homogeneity of PE samples up to about m/z 3600. PY - 2000 DO - https://doi.org/10.1255/ejms.300 SN - 1469-0667 SN - 1356-1049 SN - 1365-0718 IS - 6 SP - 11 EP - 17 PB - IM Publications CY - Chichester AN - OPUS4-11098 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - Characterization of polyesters and copolyesters by coupled chromatographic and spectroscopic techniques T2 - 2nd International Symposium on the Separation and Characterization of Natural and Synthetic Macromolecules SCM-2 CY - Amsterdam, Netherlands DA - 2005-02-02 PY - 2005 AN - OPUS4-5535 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Gerstung, Vanessa T1 - Field-Flow Fractionation of plasma-synthezised polymers T2 - 10th International Symposium on Field-Flow Fractionation, FFF 2002 CY - Amsterdam, Netherlands DA - 2002-07-01 PY - 2002 AN - OPUS4-10621 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - Characterization of silicon polymers by coupling of liquid chromatographic methods with MALDI-TOF-MS T2 - ISPAC 2000 CY - Pittsburgh, PA, USA DA - 2000-06-18 PY - 2000 AN - OPUS4-11130 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - MALDI von geregelten und ungeregelten Polyamiden nach kritischer Chromatographie T2 - VII. Anwendertreffen MALDI-TOF-MS zur Charakterisierung von synthetischen Polymeren CY - Berlin, Germany DA - 2002-05-14 PY - 2002 AN - OPUS4-11136 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - Neue Wege zur analytischen Charakterisierung komplexer Polymersysteme T2 - BAM-Kuratoriumssitzung CY - Berlin, Germany DA - 2000-05-16 PY - 2000 AN - OPUS4-11135 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - Charakterisierung strukturheterogener Polymersysteme T2 - BAM-Kolloquium CY - Berlin, Germany DA - 2000-09-07 PY - 2000 AN - OPUS4-11133 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Ralph-Peter T1 - Fortschritte bei der Polylactidcharacterisierung T2 - Fachgruppenvollversammlung VI.3, BAM CY - Berlin, Germany DA - 2004-12-14 PY - 2004 AN - OPUS4-5536 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - Characterisierung von Polyvinylpyrollidonen T2 - Fachgruppenvollversammlung VI.3, BAM CY - Berlin, Germany DA - 2004-12-14 PY - 2004 AN - OPUS4-5537 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - Characterization of Polyacetals by comprehensive 2D liquid chromatography an hyphenated techniques T2 - Separation and Characterization of Natural and Synthectic Macromolecules (SCM-2) CY - Amsterdam, Netherlands DA - 2005-02-02 PY - 2005 AN - OPUS4-11552 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - Mechanism of homogeneously catalyzed polymerization of liquid-crystalline sidegroup monomers investigated by means of MALDI-TOF-MS (No. 433) T2 - 219th ACS National Meeting CY - San Francisco, CA, USA DA - 2000-03-26 PY - 2000 AN - OPUS4-11314 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - Beispiele für zweidimensionale Kopplungen von Chromatographie und MALDI-TOF-Massenspektrometrie zur Analyse von Polymeren T2 - BAM-Abt. VI-Seminar CY - Berlin, Germany DA - 2003-09-25 PY - 2003 AN - OPUS4-11139 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - Characterization of Polymer Heterogeneity by Hyphenated Techniques (Coupling of HPLC and MALDI-TOF-MS) T2 - Polymer Laboratories CY - Church Stretton, England DA - 1996-06-28 PY - 1996 AN - OPUS4-11185 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - SFC of new liquid-crystalline cholesteryl esters T2 - InCom '96, International Symposium on Instrumentalized Analytical Chemistry and Computer Technology CY - Düsseldorf, Germany DA - 1996-03-25 PY - 1996 AN - OPUS4-11194 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -