Polystyrene-equivalent molecular weight versus true molecular weight in size-exclusion chromatography.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F03%3A55033050" target="_blank" >RIV/61389013:_____/03:55033050 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Polystyrene-equivalent molecular weight versus true molecular weight in size-exclusion chromatography.

Original language description

The evaluation of the size-exclusion chromatography (SEC) concentration elution curves by means of calibration dependence obtained in a given SEC set for a polymer different from the polymer to be analyzed results in an error in the determination of bothmolecular weight and molecular-weight distribution. The problem is analyzed assuming the validity of the universal-calibration concept. The differences between the true and apparent values of molecular weight, MWD and the weight-to-number molecular-weight ratio depend on and are expressed in terms of the parameters of the Mark-Houwink-Kuhn-Sakurada equation. The differences in molecular weight are typically tens of percent and, in extreme cases, can amount up to a factor of 3.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CD - Macromolecular chemistry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2003

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Polymer

ISSN

0032-3861

e-ISSN

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Volume of the periodical

44

Issue of the periodical within the volume

12

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

6

Pages from-to

3431-3436

UT code for WoS article

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EID of the result in the Scopus database

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