Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Frank Rittig"'
Autor:
Wolfgang Dr Schrepp, Nick Fandrich, Frank Rittig, Melanie Urtel, Steffen M. Weidner, Ulrich Just
Publikováno v:
Macromolecular Chemistry and Physics. 207:1026-1037
The structure of polyacetal copolymers with respect to their end groups is investigated. Several techniques, such as liquid chromatography, MALDI-TOF MS, IR and NMR spectroscopy, as well as combined techniques like 2D chromatography have been applied
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0f7e12ce4b006183fdb821d2119c1ea
https://doi.org/10.1002/macp.200600030
https://doi.org/10.1002/macp.200600030
Publikováno v:
Macromolecular Symposia. 231:166-177
Most synthetic polymers are distributed in more than one parameter of molecular heterogeneity. For hydrophobic copolymers there are different chromatographic techniques available to analyse these distributions. As a result of the increasing interest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6411abace69fa678cc012f6011ada1d0
https://doi.org/10.1002/masy.200590021
https://doi.org/10.1002/masy.200590021
Publikováno v:
Macromolecular Chemistry and Physics. 206:2269-2277
The chromatographic analysis of hydrophilic copolymers is complicated due to the fact that in most cases aqueous eluents must be used. In aqueous eluents different polar and ionic effects may disturb the selective interactions between the macromolecu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74004028114b0c06caaba606252e53db
https://doi.org/10.1002/macp.200500344
https://doi.org/10.1002/macp.200500344
Autor:
Christine M. Papadakis, Frank Rittig
Publikováno v:
Journal of Physics: Condensed Matter. 17:R551-R570
Diblock copolymers in the melt state form a variety of mesoscopically ordered morphologies, depending on their composition and on temperature. They can thus serve as a model system for studying the dynamics in different ordered morphologies with the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::631005d9262f7aa43163a3af5ccc3a28
https://doi.org/10.1088/0953-8984/17/17/r01
https://doi.org/10.1088/0953-8984/17/17/r01
Publikováno v:
Macromolecular Rapid Communications. 26:438-444
Complex polymers are distributed in more than one direction of molecular heterogeneity. In addition to the molar mass distribution, they are frequently distributed with respect to chemical composition, functionality, and molecular heterogeneity. One
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74baefc667b3d386bbc26e9086d15e5d
https://doi.org/10.1002/marc.200400610
https://doi.org/10.1002/marc.200400610
Publikováno v:
Journal of Carbohydrate Chemistry. 23:163-168
By enzymatic reaction of sucrose (1) and isomelezitose (2) with the enzyme inulinase (NOVO, SP230) a novel tetrasaccharide (3) was synthesised,.the molecular weight of which was confirmed by electrospray‐ionisation mass spectrometry and gel permeat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::421264ed2734132a67fbf8bb28a073bd
https://doi.org/10.1081/car-120037574
https://doi.org/10.1081/car-120037574
Autor:
Steffen M. Weidner, J.F. Friedrich, Frank Rittig, Wolfgang Wittke, Ulrich Just, Freddy Gruber
Publikováno v:
International Journal of Mass Spectrometry. 238:235-244
A new approach of analysis of polyamide 6.6 using the principle of coupling polymer liquid chromatography to matrix assisted laser desorption ionization–time of flight–mass spectrometry (MALDI–TOF–MS) is presented. In contrast to the known te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78e110d5f4bfd95ae4e01bd8e4b98e48
https://doi.org/10.1016/j.ijms.2004.08.013
https://doi.org/10.1016/j.ijms.2004.08.013
Publikováno v:
AIChE Journal. 50:589-595
Pulsed field gradient (PFG) NMR measurements have been conducted to measure self-diffusion coefficients of gases within porous media. Analysis of these microscopic data with the use of a previously developed long-range diffusion model has enabled us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5f59fa5e46f31e4dba3a54afcfd77a0
https://doi.org/10.1002/aic.10053
https://doi.org/10.1002/aic.10053
Publikováno v:
The Journal of Physical Chemistry B. 107:4560-4566
The self-diffusion of gases within 5A- and 13X-type zeolites has been investigated using pulsed field gradient (PFG) NMR. Self-diffusion coefficients for pure carbon monoxide, methane, and nitrogen within commercially available zeolitic adsorbents ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e3866e8ed9157b13cb84dfcccc54d5d
https://doi.org/10.1021/jp0219451
https://doi.org/10.1021/jp0219451
Publikováno v:
Industrial & Engineering Chemistry Research. 41:4430-4434
Gas-phase NMR spectroscopy has been applied successfully in measuring pure- and mixed-gas equilibria on a 5A adsorbent for carbon monoxide, methane, and nitrogen. The reliability of the technique is established by comparing data collected in this pap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f5760e5361b874961936c667a3bb614
https://doi.org/10.1021/ie020133o
https://doi.org/10.1021/ie020133o