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Verfasser Titel Jahr
zeige Details Balke, S. T.., Hamielec, A. E.. Polymer reactors and molecular weight distribution. VIII. A method of interpreting skewed GPC chromatograms
in: Journal of Applied Polymer Science, in: Journal of Applied Polymer Science . - New York, NY [u.a.] : Wiley, ISSN 0021-8995, ZDB-ID 1491105-x Vol. 13 (7. 1969), p. 1381-1419
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1969
A new-method of interpreting GPC chromatograms which accounts for skewing and symmetrical axial dispersion has been developed. General relationships for a symmetrical axial dispersion correction and for a skewing correction are derived.The method has been verified experimentally for unimodal chromatograms and linear calibration curves over a wide range of GPC operating conditions, polymer molecular weights and polydispersities. Measurements of h and skewing factors were obtained by a once-through technique. The need for performing reverse flow experiments has been eliminated. Artificial oscillations in the corrected chromatogram due to step size (Method of Pierce-Armonas), and to number of terms in a polynomial expansion (Method of Tung and Method of Smith) are eliminated.The method has yet to be evaluated for nonlinear calibration curves and multi-modal distributions. However, suggestions for its application in these circumstances are presented.
Copyright: Copyright © 1969 John Wiley & Sons, Inc.
beteiligte Personen: Balke, S. T.. , Hamielec, A. E..
Format: Elektronisch
Sprache: English
Erschienen: 1969.
Serie: Wiley InterScience Backfile Collection 1832-2000 [Dig. Serial]
Schlagwörter:
URL: http://dx.doi.org/10.1002/app.1969.070130705

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Verfasser Titel Jahr
zeige Details Mahabadi, H. Kh.. Method for gel permeation chromatography calibration and the evaluation of Mark-Houwink constants
in: Journal of Applied Polymer Science, in: Journal of Applied Polymer Science . - New York, NY [u.a.] : Wiley, ISSN 0021-8995, ZDB-ID 1491105-x Vol. 30 (4. 1985), p. 1535-1544
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1985
zeige Details Tung, L. H.., Runyon, J. R.. Molecular weight distributions of standard polystyrene samples by GPC and by sedimentation velocity analysisPresented at the 164th ACS National Meeting, New York, New York,...
in: Journal of Applied Polymer Science, in: Journal of Applied Polymer Science . - New York, NY [u.a.] : Wiley, ISSN 0021-8995, ZDB-ID 1491105-x Vol. 17 (5. 1973), p. 1589-1596
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1973
In precision gel permeation chromatographic (GPC) work, the spreading (zone spreading) characteristics of the instrument must be calibrated. Standard samples of anionic polystyrene have been used for this purpose. The molecular weight distributions of these standard samples, nevertheless, have... mehr
Copyright: Copyright © 1973 John Wiley & Sons, Inc. mehr
beteiligte Personen: Tung, L. H.. , Runyon, J. R..
Format: Elektronisch
Sprache: English
Erschienen: 1973.
Serie: Wiley InterScience Backfile Collection 1832-2000 [Dig. Serial]
Schlagwörter:
URL: http://dx.doi.org/10.1002/app.1973.070170521
zeige Details Ogawa, Toshio., Suzuki, Yoshitake., ... Determination of molecular weight distribution for polypropylene by column fractionation and gel-permeation chromatography
in: Journal of Polymer Science Part A-1: Polymer Chemistry, in: Journal of Polymer Science Part A-1: Polymer Chemistry . - New York : John Wiley & Sons, Inc., ISSN 0449-296X Vol. 10 (3. 1972), p. 737-750
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1972
zeige Details Ambler, M. R.. Universal calibration in GPC: A new approach for the calculation of molecular weights
in: Journal of Polymer Science: Polymer Chemistry Edition, in: Journal of Polymer Science: Polymer Chemistry Edition . - New York : John Wiley & Sons, Inc., ISSN 0360-6376 Vol. 11 (1. 1973), p. 191-201
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1973
zeige Details Dobbin, Christopher J. B.., Rudin, Alfred., ... Evaluation of GPC methods for estimation of Mark-Houwink-Sakurada constants
in: Journal of Applied Polymer Science, in: Journal of Applied Polymer Science . - New York, NY [u.a.] : Wiley, ISSN 0021-8995, ZDB-ID 1491105-x Vol. 25 (12. 1980), p. 2985-2992
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