TY - JOUR A1 - Pasch, H. A1 - Krüger, H. A1 - Much, H. A1 - Just, Ulrich T1 - Simultaneous determination of functionality type and molar mass distribution of oligo (1,3,6-trioxocane)s by supercritical fluid chromatography PY - 1992 SN - 0032-3861 SN - 1873-2291 VL - 33 SP - 3889 EP - 3892 PB - Springer CY - Berlin AN - OPUS4-11333 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Pasch, H. A1 - Zammert, I. A1 - Just, Ulrich T1 - Matrix-assisted laser desorption/ionization mass spectrometry of synthetic polymers - Analysis of poly (ethylene oxides) N2 - Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) is a useful new technique for the determination of the chemical structure and the molar mass distribution of poly(ethylene oxides). Investigating different alkyloxy and aryloxy polyethylene oxides, we have shown that MALDI-MS gives accurate molar masses, provided that the oligomer masses are above 400 g/mol. Below 400 g/mol, mass discrimination effects have to be taken into account. A perfect fit of MALDI-MS with data, determined independently by supercritical fluid chromatography and high performance liquid chromatography, was obtained. PY - 1995 DO - https://doi.org/10.1080/10236669508233885 SN - 1023-666X SN - 1563-5341 VL - 1 IS - 4 SP - 329 EP - 338 PB - Gordon and Breach Publ. CY - Amsterdam AN - OPUS4-11358 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -