1970
DOI: 10.1002/pol.1970.160080112
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Calibration of gel‐permeation columns with unfractionated polymers

Abstract: Calibration of gel-permeation columns would be most directly performed by using narrow fractions of the polymer under study. However, obtaining fractions sufficiently narrow for this purpose is laborious and not always feasible. Further, for columns with a wide distribution of pore sizes, e.g., lo3-lo7 A, a simple, two-parameter, semilog relation will not always adequately represent the dependence of molecular weight on elution volume. This note describes a novel approach for calibrating gel-permeation columns… Show more

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Cited by 28 publications
(6 citation statements)
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“…This variation might be associated with deviations from the Mark–Houwink relation for polymers with molar masses below 10–20 kDa (depending on the polymer class). The validity of the applied universal calibration is based on the Mark–Houwink coefficient, which are derived by assuming a Gaussian distribution for the polymer coils 36–39. This assumption might not necessarily be fulfilled for all polymer classes below a certain molecular weight.…”
Section: Resultsmentioning
confidence: 99%
“…This variation might be associated with deviations from the Mark–Houwink relation for polymers with molar masses below 10–20 kDa (depending on the polymer class). The validity of the applied universal calibration is based on the Mark–Houwink coefficient, which are derived by assuming a Gaussian distribution for the polymer coils 36–39. This assumption might not necessarily be fulfilled for all polymer classes below a certain molecular weight.…”
Section: Resultsmentioning
confidence: 99%
“…A practical alternative approach makes use of theoretical polymer MMD and average molar mass values to provide the needed MMD information for the integral-MMD calibration [18]. This approach has been applied to both water-soluble polymers [19] and organic-soluble polymers (e.g., nylon 6,6) [20].…”
Section: Integral-mmd Methodsmentioning
confidence: 99%
“…B. der bekannte Algorithmus von BALKE et al [2] zur Bestimmung der Koeffizienten eines Eichpolynoms aus der Minimierung der quadratischen Abweichung zwischen den beliannten und den aus der Elutionskurve berechneten Molmassenmittelwerten. In diese Gruppe von Eichverfahren gehoren auch die von WEISS et al [3] und BAUER et al [4] vorgeschlagenen Algorithmen zur Eichung mit Polymeren bekannter breiter Molmassenverteilung. Bei der zweiten Gruppe von Eichverfahren wird von dem von BENOIT et al [5] entwickelten Konzept der Gultigkeit einer ,,universellen" Eichfunktion ausgegangen, aus der sich mit den entsprechenden KUHN-MARK-HOWWINK-Gleichungen die Eichbeziehungen fur beliebige Polymere berechnen lassen.…”
Section: Etnleitungunclassified
“…Bei Kenntnis der Molmassenverteilung g ( M ) eines breit verteilten Polymers kann der Zusammenhang zwischen integraler Molmassenverteilung und integriertem Chromatogramm direkt zur Bercchnung der Eichfunktion herangezogen werden, ohne einen bestimmten Funktionstyp vorauszusetzen [3,41 bestimmen. Fur ein beliebiges anderes Polymer ergibt sich die zugehorige Eichfunktion aus den Gleichungen (4) und (10) zu …”
Section: Verfahrenunclassified