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Programmed cross flow asymmetrical flow field-flow fractionation for the size separation of pullulans and hydroxypropyl cellulose

Leeman, Mats LU ; Wahlund, Karl-Gustav LU and Wittgren, Bengt (2006) In Journal of Chromatography A 1134(1-2). p.236-245
Abstract
Different functions for the programming of the cross flow in asymmetrical flow field-flow fractionation were studied with the aim to find the flow conditions most suitable for the molar mass distribution analysis of high molecular weight polysaccharides. A mixture of four differently sized pullulans covering the molar mass range 5.8 x 10(3)-1.6 x 106 g mol(-1) were used as a model sample. Two types of programs were studied, linear and exponential decays, both with and without initial periods of a constant cross flow. For comparison, nonprogrammed runs, i.e. using constant cross flow, were studied. It was found that exponentially decaying cross flow gave the most uniform molar mass selectivity across the fractogram. The programmed cross... (More)
Different functions for the programming of the cross flow in asymmetrical flow field-flow fractionation were studied with the aim to find the flow conditions most suitable for the molar mass distribution analysis of high molecular weight polysaccharides. A mixture of four differently sized pullulans covering the molar mass range 5.8 x 10(3)-1.6 x 106 g mol(-1) were used as a model sample. Two types of programs were studied, linear and exponential decays, both with and without initial periods of a constant cross flow. For comparison, nonprogrammed runs, i.e. using constant cross flow, were studied. It was found that exponentially decaying cross flow gave the most uniform molar mass selectivity across the fractogram. The programmed cross flow was applied to the molar mass distribution analysis of a technical quality of hydroxypropyl cellulose. (c) 2006 Elsevier B.V. All rights reserved. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
programmed field-flow fractionation, polysaccharides
in
Journal of Chromatography A
volume
1134
issue
1-2
pages
236 - 245
publisher
Elsevier
external identifiers
  • wos:000242059400030
  • scopus:33750285077
ISSN
0021-9673
DOI
10.1016/j.chroma.2006.08.065
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Analytical Chemistry (S/LTH) (011001004)
id
dcf6d511-b924-44fe-8cac-331e74e8a1fe (old id 376988)
date added to LUP
2016-04-01 16:26:45
date last changed
2021-03-31 02:22:55
@article{dcf6d511-b924-44fe-8cac-331e74e8a1fe,
  abstract     = {Different functions for the programming of the cross flow in asymmetrical flow field-flow fractionation were studied with the aim to find the flow conditions most suitable for the molar mass distribution analysis of high molecular weight polysaccharides. A mixture of four differently sized pullulans covering the molar mass range 5.8 x 10(3)-1.6 x 106 g mol(-1) were used as a model sample. Two types of programs were studied, linear and exponential decays, both with and without initial periods of a constant cross flow. For comparison, nonprogrammed runs, i.e. using constant cross flow, were studied. It was found that exponentially decaying cross flow gave the most uniform molar mass selectivity across the fractogram. The programmed cross flow was applied to the molar mass distribution analysis of a technical quality of hydroxypropyl cellulose. (c) 2006 Elsevier B.V. All rights reserved.},
  author       = {Leeman, Mats and Wahlund, Karl-Gustav and Wittgren, Bengt},
  issn         = {0021-9673},
  language     = {eng},
  number       = {1-2},
  pages        = {236--245},
  publisher    = {Elsevier},
  series       = {Journal of Chromatography A},
  title        = {Programmed cross flow asymmetrical flow field-flow fractionation for the size separation of pullulans and hydroxypropyl cellulose},
  url          = {http://dx.doi.org/10.1016/j.chroma.2006.08.065},
  doi          = {10.1016/j.chroma.2006.08.065},
  volume       = {1134},
  year         = {2006},
}