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Retention mechanism of branched macromolecules in size exclusion chromatography
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SYSNO ASEP 0525298 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Retention mechanism of branched macromolecules in size exclusion chromatography Author(s) Netopilík, Miloš (UMCH-V) RID
Podzimek, Š. (CZ)Source Title ACS Omega. - : American Chemical Society - ISSN 2470-1343
Roč. 5, č. 24 (2020), s. 14254-14260Number of pages 7 s. Language eng - English Country US - United States Keywords size-exclusion chromatography ; random branching ; separation mechanism Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects GC17-04258J GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UMCH-V - RVO:61389013 UT WOS 000543740600006 EID SCOPUS 85086707736 DOI 10.1021/acsomega.9b03952 Annotation The theory of Stockmayer in the modifications of Thurmond and Zimm has been used for the description of the size exclusion chromatography separation of randomly branched molecules with tetrafunctional branch points. It is assumed that free chain ends, created by the branching process, cause the molecules to be entrapped in the pores of the column packing with the time of their release given by the exponential law characteristic for the monomolecular reactions. Using this assumption, the anomalous elution behavior of such molecules can be modeled. With increasing elution volume, the average values of radius of gyration and, to a lesser degree, of molecular weight decrease and, after passing a minimum, again increase in the low-molecular weight region. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2021 Electronic address https://pubs.acs.org/doi/10.1021/acsomega.9b03952#
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