TY - CONF A1 - Weidner, Steffen T1 - Sample spot heterogeneity investigated by MALDI-imaging mass spectrometry T2 - 18th International Mass Spectrometry Conference CY - Bremen, Germany DA - 2009-08-30 PY - 2009 AN - OPUS4-19375 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fandrich, Nick T1 - Characterisation of new blocky copolymers of N-vinyl pyrrolidone and vinyl acetate by using of liquid chromatography and hyphenated techniques T2 - ExTech-HTC-Public Safety and Security Symposia CY - Bruges, Belgium DA - 2008-01-30 PY - 2008 AN - OPUS4-16398 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - Identification of End Group Heterogeneity of Modified Polyamide 6.6 utilizing Two-Dimensional Chromatography/MALDI-MS T2 - 51st ASMS Conference CY - Montreal, Canada DA - 2003-06-08 PY - 2003 AN - OPUS4-4655 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - A new two-dimensional approach for copolymer characterization by LC / MALDI- and LC / ESI-TOF-MS T2 - European Polymer Congress 2007 CY - Portorož, Slovenia DA - 2007-07-02 PY - 2007 AN - OPUS4-14702 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - UPLC/ESI-MS and HPLC/MALDI-MS-Complementary devices for copolymer characterization T2 - 20th International Symposium on Polymer Analysis and Characterization CY - Crete, Greece DA - 2007-10-01 PY - 2007 AN - OPUS4-15465 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Rittig, F. T1 - Characterization of Polyamides using new combined techniques T2 - Vortragstagung der Fachgruppe Makromolekulare Chemie der GDCh CY - Düsseldorf, Germany DA - 2004-03-15 PY - 2004 AN - OPUS4-11142 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - LC / MALDI- and LC / ESI-TOF MS coupling for characterization of synthetic polymers T2 - ANAKON 2007 CY - Jena, Germany DA - 2007-03-27 PY - 2007 AN - OPUS4-14660 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kricheldorf, H. R. T1 - Syntheses of Cyclic Polymers via the ROPPOC Approach N2 - Different strategies for the synthesis of polylactides were presented with special focus on Ring-opening Polymerization (ROP) and simultaneous ROP and Polycondensation (ROPPOC) mechanism. The mechanism of the formation of cyclic Polyesters is discussed in detail and established theories about the formation of cycles in polycondensation reactions are critically reviewed. T2 - DSM Competence Meeting CY - Dalfsen, The Netherlands DA - 12.11.2018 KW - Polylactide KW - MALDI-TOF mass spectrometry KW - Polycondensation KW - Cycles PY - 2018 AN - OPUS4-47027 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mix, Renate T1 - Charakterisierung der Umsetzung von OH-terminierten Oligomeren mit 3-(Isocyanatopropyl)trimethoxysilan mittels MALDI-TOF und FTIR T2 - 12. Kolloquium "MALDI und Synthetische Polymere" CY - Berlin, Germany DA - 2008-05-06 PY - 2008 AN - OPUS4-17505 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Ralph-Peter T1 - Beiträge zur Charakterisierung von Polyatiden durch Kopplung von HPLC-Trennmethoden mit der MALDI-TOF-MS T2 - Analytica Conference 2002 CY - Munich, Germany DA - 2002-04-23 PY - 2002 AN - OPUS4-3385 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Falkenhagen, Jana T1 - New approach for copolymer characterization using multidimensional coupling methods T2 - 10th Annual UNESCO / IUPAC Conference on Macromolecules & Materials CY - Mpumalanga, South Africa DA - 2008-09-07 PY - 2008 AN - OPUS4-17887 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Abderrazak, H. T1 - Synthesis of new bio based adsorbent phases N2 - Over the years, industrial and human activities and agricultural practices have caused a serious threat to human health and the environment. Indeed, it has been demonstrated that these activities are responsible for the presence of pollutants in the soil, air and water. Water is one of the most strategic issues today, as it is associated with the living world. Therefore, water pollution is becoming a universal scourge that leads to environmental degradation, decrease of water quality and threatens public health. Water pollution is mainly due to the discharge of certain harmful chemical compounds that are not very or not at all biodegradable (phenolic compounds, heavy metals, hydrocarbons, dyes, pesticides, etc.) by various industries: chemical, pharmaceutical, textile, food processing, etc. The impact of these industrial effluents on fauna and flora is very harmful. A sensitization of the socio-economic actors and the public, accompanied by a severe regulation in relation to the discharges, would contribute to fight against this drift, but also, by the development of effective methods allowing to remove these pollutants, not only in an analytical purpose but also of depollution. Thus and within the framework of the preservation of an environment with regard to any anthropogenic activity, our research topic relates to the use of original biosourced polymeric phases for the extraction of the organic compounds and the heavy metals in aqueous mediums. Therefore, we have proceeded to the synthesis and characterization of a large variety of monomers, polymers and cross-linked materials. These products, partially derived from biomass, contain various functional groups with the ability to interact with chemical components without discriminating effect. The developed polymer phases have been successfully used for the adsorption of some organic pollutants and heavy metals in synthetic aqueous solutions. T2 - 12. Journees maghreb-europe. Matériaux et Applications aux Dispositifs et Capteurs CY - Monastir, Tunisia DA - 08.11.2022 KW - Organic-inorganic adsorbents KW - Semi-Interpenetrating Network KW - Poly(ether-sulfone) KW - Reversible adsorption. PY - 2022 AN - OPUS4-56286 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - Determination of molecular mass and molecular mass distribution of polymers by matrixassisted laser desorption/ionization - time of fightmass spectrometry (MALDI TOF MS) T2 - ISO TC 61/SC 5 Meeting CY - Yokohama, Japan DA - 2006-09-18 PY - 2006 AN - OPUS4-13822 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - Hyphenated coupling methods for polymer characterization and identification T2 - Dutch Polymer Workshop CY - Jena, Germany DA - 2013-12-09 PY - 2013 AN - OPUS4-30268 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krüger, Ralph-Peter T1 - Charakterisierung von Si-Polymerarchitekturen durch Kopplung von flüssigchromatographischen Methoden mit der MALDI-TOF-Massenspektrometrie im DFG-Schwerpunktprogramm T2 - DFG-Kolloquium zum Schwerpunktprogramm "Silicium-Chemie" CY - Bielefeld, Germany DA - 1997-05-12 PY - 1997 AN - OPUS4-3443 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - MassChrom2D zur Bestimmung der Zusammensetzung von Copolymeren aus MALDI und LC Daten T2 - 16. Kolloquium MALDI und Synthetische Polymere CY - Berlin, Germany DA - 2012-05-08 PY - 2012 AN - OPUS4-26135 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - Liquid Adsorption Chromatography near Critical Conditions of Adsorption coupled with Matrix-assisted Laser Desorption / ionization Mass Spectrometry T2 - 47th Conference of The American Society of Mass Spectrometry CY - Dallas, TX, USA DA - 1999-06-11 PY - 1999 AN - OPUS4-2240 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - Zweidimensionale Charakterisierung von PA 6.6 durch Kopplung von LAC und MALDI-MS T2 - 7. Kolloquium "MALDI und synthetische Polymere" CY - Berlin, Germany DA - 2003-05-13 PY - 2003 AN - OPUS4-3094 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - MALDI TOF MS zur Aufklärung von Kristallisationsprozessen in Polyestern N2 - MALDI TOF Massenspektrometrie wurde verwendet, um Kristallisationsprozesse in Polyestern (Polylactide, Polyglycolide) zu untersuchen. Dabei konnte gezeigt werden, dass Zyklen und Linearen simultan, aber in unterschiedlichen Kristalliten, kristallisieren. Die dabei ablaufenden Umesterungen (Transesterifizierungen) konnten mit der MALDI TOF Massenspektrometrie nachgewiesen werden. Damit wurde ein völlig neues Anwendungsgebiet dieser MS Methode demonstriert. T2 - 28. Kolloquium Massenspektrometrie von Polymeren CY - Berlin, Germany DA - 14.05.2024 KW - MALDI TOF MS KW - Bioabbaubare Polymere KW - Crystallinity PY - 2024 AN - OPUS4-60029 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Weidner, Steffen T1 - Abbau und Zersetzungsverhalten von Polymeren und Komposit‐ Materialien auf Polyurethanbasis N2 - Polyurethane zeichnen sich durch ihre große Flexibilität des Anwendungsbereiches aus. Im Rahmen dieses Vortrags wird ein neues Themenfeldprojekt der BAM vorgestellt und erste Ergebnisse präsentiert. T2 - Deutsche Gesellschaft für Materialprüfung, Fachausschuss Polymerwerkstoffe CY - Darmstadt, Germany DA - 10.11.2016 KW - Polyurethane KW - Abbauverhalten PY - 2016 AN - OPUS4-38332 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -