About: Distribution analysis of ultra-high molecular mass poly(ethylene oxide) containing silica particles by size-exclusion chromatography with dual light scattering and refractometric detection     Goto   Sponge   NotDistinct   Permalink

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Description
  • Two different size exclusion chromatography systems, connected in-line either to a low-angle light scattering (LALS) or to a multi-angle light scattering (MALS) detector, are employed for determination of molecular mass distributions of poly(ethylene oxide) samples having a weight average molecular mass up to eight millions.The detrimental effect of the presence of strongly scattering silica particles in the samples on the light scattering signal can be eliminated using a suitable sample dissolution procedure utilizing silica solubility in aqueous mobile phase. Self-compensating ability of the dual detection in flow rate effects is shown to be the main advantage here. A good agreement between the results obtained using both systems is found provided that a carefully selected angular extrapolation procedure is used in the multi-angle case.
  • Two different size exclusion chromatography systems, connected in-line either to a low-angle light scattering (LALS) or to a multi-angle light scattering (MALS) detector, are employed for determination of molecular mass distributions of poly(ethylene oxide) samples having a weight average molecular mass up to eight millions.The detrimental effect of the presence of strongly scattering silica particles in the samples on the light scattering signal can be eliminated using a suitable sample dissolution procedure utilizing silica solubility in aqueous mobile phase. Self-compensating ability of the dual detection in flow rate effects is shown to be the main advantage here. A good agreement between the results obtained using both systems is found provided that a carefully selected angular extrapolation procedure is used in the multi-angle case. (en)
  • Dva GPC systémy s detekcí maloúhlovým a multi-úhlovým rozptylem světla byly použity ke stanovení distribucí molekulových vah polyethylenoxidu o molekulových vahách až 8000000. Rušivý efekt přítomných silikagelových částic lze odstranit vhodným rozpouštěcím postupem. Výhodou duální detekce je schopnost výrazně kompensovat rušivé vlivy průtoku na analýzu. Dobrou shodu výsledků z obou systémů lze dosáhnout jestliže se správně zvolí způsob extrapolace úhlově závislých dat v případě multi-úhlové detekce. (cs)
Title
  • Distribution analysis of ultra-high molecular mass poly(ethylene oxide) containing silica particles by size-exclusion chromatography with dual light scattering and refractometric detection
  • Distribuční analýza extrémně vysokomolekulárního polyethylenoxidu obsahujícího silikagelové částice metodou gelové chromatografie s duální rozptylovou a refraktometrickou detekcí (cs)
  • Distribution analysis of ultra-high molecular mass poly(ethylene oxide) containing silica particles by size-exclusion chromatography with dual light scattering and refractometric detection (en)
skos:prefLabel
  • Distribution analysis of ultra-high molecular mass poly(ethylene oxide) containing silica particles by size-exclusion chromatography with dual light scattering and refractometric detection
  • Distribuční analýza extrémně vysokomolekulárního polyethylenoxidu obsahujícího silikagelové částice metodou gelové chromatografie s duální rozptylovou a refraktometrickou detekcí (cs)
  • Distribution analysis of ultra-high molecular mass poly(ethylene oxide) containing silica particles by size-exclusion chromatography with dual light scattering and refractometric detection (en)
skos:notation
  • RIV/61389013:_____/05:00000043!RIV/2005/AV0/A55005/N
http://linked.open.../vavai/riv/strany
  • 249;260
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http://linked.open...avai/riv/aktivity
  • P(KSK4050111)
http://linked.open...iv/cisloPeriodika
  • 2
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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http://linked.open...titaPredkladatele
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  • 518355
http://linked.open...ai/riv/idVysledku
  • RIV/61389013:_____/05:00000043
http://linked.open...riv/jazykVysledku
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  • size-exclusion chromatography;poly(ethylene oxide);molecular mass distribution (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [906B6E801CCA]
http://linked.open...i/riv/nazevZdroje
  • Journal of Chromatography
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 1068
http://linked.open...iv/tvurceVysledku
  • Porsch, Bedřich
  • Wittgren, B.
  • Welinder, A.
  • Körner, A.
issn
  • 0021-9673
number of pages
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