Dokument-ID Dokumenttyp Autoren/innen Persönliche Herausgeber/innen Haupttitel Abstract Auflage Verlagsort Verlag Herausgeber (Institution) Erscheinungsjahr Titel des übergeordneten Werkes Jahrgang/Band ISBN Veranstaltung Veranstaltungsort Beginndatum der Veranstaltung Enddatum der Veranstaltung Ausgabe/Heft Erste Seite Letzte Seite URN DOI Lizenz Datum der Freischaltung OPUS4-33731 Zeitschriftenartikel Weidner, Steffen; Kricheldorf, H.R.; Scheliga, F. Cyclization and dispersity of poly(alkylene isophthalate)s Poly(alkylene isophthalate)s were prepared by different methods, either in solution or in bulk. The SEC measurements were evaluated in such a way that all oligomers were included. In solution (monomer conc. 0.1–0.7 mol/L) large fractions of rings were formed and high dispersities (up to 12) were obtained, which disagree with theoretical predictions. Polycondensations in bulk did neither generate cyclics by 'back-biting' nor by end-to-end cyclization, when the maximum temperature was limited to 210 °C. The dispersities of these perfectly linear polyesters were again higher than the theoretical values. Regardless of the synthetic method monomeric cycles were never observed. Furthermore, SEC measurements performed in tetrahydrofuran and in chloroform and SEC measurements performed in three different institutes were compared. Finally, SEC measurements of five samples were performed with universal calibration and a correction factor of 0.71 ± 0.02 was found for normal calibration with polystyrene. Hoboken, NJ Wiley 2016 Journal of polymer science A, polymer chemistry 54 1 197 208 10.1002/pola.27892 2016-02-20 OPUS4-35296 Zeitschriftenartikel Seifert, Stephan; Weidner, Steffen; Panne, Ulrich; Kneipp, Janina Taxonomic relationship of pollen from MALDI TOF MS data using multivariate statistics Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) has been suggested as a promising tool for the investigation of pollen, but the usefulness of this approach for classification and identification of pollen species has to be proven by an application to samples of varying taxonomic relations. Chichester Wiley 2015 Rapid communications in mass spectrometry 29 1145 1154 10.1002/rcm.7207 2016-02-20