Quelques applications d'un détecteur viscosimétrique à la chromatographie d'exclusion en phase liquide

Gallot, Z.; Marais, L.; Benoît, H.

doi:10.1016/s0021-9673(00)97053-5

Cited by 20 publications

(2 citation statements)

References 11 publications

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“…Knowing that [?la = 1.41 X M0.7 in THF,2 one obtains log Mi = -0.33 + 1.056 log Ma (9) The validity of the viscosity law established for IPS in THF can be checked indirectly from the evolution of the geometric dimensions of the isotactic polymer. As IPS D3 fractions of very narrow polydispersity (Fig.…”

Section: Experimental Results (Gpc-light Scattering-osmometry)mentioning

confidence: 96%

Isotactic polystyrene characterization by gel permeation chromatography in tetrahydrofuran

Guenet

Gallot

Picot

et al. 1977

J of Applied Polymer Sci

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SynopsisIsotactic polystyrene fractions were characterized by gel permeation chromatography (GPC) in tetrahydrofuran (THF) a t 25OC. From the universal calibration method, a viscosity law has been established allowing determination of the correspondence between the molecular weight GPC calibration laws for APS and IPS. The validity of characterization of IPS by this method was confirmed with light scattering and osmometry.

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Section: Experimental Results (Gpc-light Scattering-osmometry)mentioning

confidence: 96%

Isotactic polystyrene characterization by gel permeation chromatography in tetrahydrofuran

Guenet

Gallot

Picot

et al. 1977

J of Applied Polymer Sci

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“…A later paper included complete instrumental design and computer interfacing for a continuous viscometric detector (254). Gallot, Marais, and Benoit also described a viscometric detector for GPC (120). And successful molecular weight monitoring of GPC eluant by low angle, laser light scattering was reported (255).…”

Section: Apparatusmentioning

confidence: 99%

Gel and affinity chromatography

Gaylor¹,

James²,

Weetall³

1976

Anal. Chem.

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H. L. James is a Project Leader in the Chemical Analysis section of the R&D division of the Standard Oil Company (Ohio). He is presently involved in Analytical Research and Method Development in the areas of polymers and petroleum. Recent research interests include developing liquid exclusion chromatographic methods for monitoring polymerization processes. Mr. James received his B.A. in chemistry from Syracuse University and his M.S. in polymer chemistry from the University of Akron. He is coauthor of ten scientific papers in various areas of polymer characterization, co-chairman of the Akron-Cleveland GPC/LC Discussion Group, co-editor of the ASTM Bibliography on Liquid Exclusion Chron phy, and a member of the American Chemical Society and Sigma Xi.

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Corrections des réponses des détecteurs placés à la sortie d'un CPG

Benchabane

1986

Angew. Makromol. Chem.

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RESUME:Le chromatographe par permkation de gel (CPG) muni du seul dktecteur rkfractomktrique est insuffisant pour la caractkrisation des polymeres. Une combinaison de trois dktecteurs, un rkfractomktre, un viscosimktre et un spectrophotomktre infrarouge, est nkcessaire pour analyser un polymhe prksentant une hktkrogknkitk chimique et molkculaire. Malheureusement l'utilisation des rkponses brutes de ces dktecteurs conduit A des rksultats erronks. Dans ce travail les diffkrentes sources d'erreurs sont identifikes et puis corrigkes. SUMMARY:Gel permeation chromatography only fitted with a refractometer is not sufficient for characterization of polymers. In the present study a combination of three detectors, a refractometer, a viscometer, and an IR-spectrophotometer is estimated to be necessary for analyzing polymers showing chemical and molecular heterogeneities. Unfortunately, using the crude results of these detectors for calculations leads to errors, the origins of which are identified and corrected.

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Quelques applications d'un détecteur viscosimétrique à la chromatographie d'exclusion en phase liquide

Cited by 20 publications

References 11 publications

Isotactic polystyrene characterization by gel permeation chromatography in tetrahydrofuran

Isotactic polystyrene characterization by gel permeation chromatography in tetrahydrofuran

Gel and affinity chromatography

Corrections des réponses des détecteurs placés à la sortie d'un CPG

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