6533b85afe1ef96bd12b9406
RESEARCH PRODUCT
Die Bestimmung der Molekulargewichtsverteilung von nichtkristallisierenden Polymeren mit dem Elektronenmikroskop, 6. Fehlerkorrektur der experimentellen Zahlenverteilungsfunktion
G. V. SchulzGeorg S. GreschnerG. Koszterszitzsubject
chemistry.chemical_classificationMean squared errorPolymerizationDistribution (number theory)ChemistrylawPolymer chemistryAnalytical chemistryMolar mass distributionPolymerElectron microscopeCritical valuelaw.inventiondescription
A mathematical treatment is described, by means of which the effect of the measuring errors on the number molecular weight distribution of polymers, as obtained with an electron microscope (EM), can be eliminated. It is shown, that the difference in the nonuniformities of the measured and the corrected distribution would be negligible only in the case of samples with high average degrees of polymerization and sufficiently broad distributions. Otherwise differences of 10% or more can be found, depending on the size of the actual measuring error. This is shown by means of four practical examples. For a practical application the measuring error may not exceed some critical value, which, though always lies above the mean error of the EM-method.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1977-04-01 | Die Makromolekulare Chemie |