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Fast and efficient single step liquid chromatography separation of parent homopolymers from block copolymers
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SYSNO ASEP 0545171 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Fast and efficient single step liquid chromatography separation of parent homopolymers from block copolymers Author(s) Netopilík, Miloš (UMCH-V) RID
Janata, Miroslav (UMCH-V) RID
Trhlíková, Olga (UMCH-V) RID, ORCID
Berek, D. (SK)Article number 462441 Source Title Journal of Chromatography A. - : Elsevier - ISSN 0021-9673
Roč. 1653, 13 September (2021)Number of pages 6 s. Language eng - English Country NL - Netherlands Keywords homopolymers ; block copolymers ; barriers Subject RIV CD - Macromolecular Chemistry OECD category Polymer science Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000685253900002 EID SCOPUS 85111916766 DOI 10.1016/j.chroma.2021.462441 Annotation The modified layout of the barrier method called liquid chromatography under limiting conditions of enthalpic interactions is presented. It enables automated quantitative separation of blends of synthetic polymers, for example the single step discrimination of both parent homopolymers from the block copolymers. Moreover, this method enables the estimation of molar mass and molar mass distribution of the block copolymer precursor. Adjacent large sequences of mobile phase of different composition are applied as barriers. They are created by a computer controlled pair of pumping systems in the form of longitudinal profiles along the column. The home synthesized block copolymers polystyrene-block-poly(2-vinylpyridine) served as model examples of the method application. The adsorption retention mechanism was exploited using mesoporous bare silica gel column packing. Series of block copolymers of similar composition can be quickly handled with the method to optimize their synthesis. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2022 Electronic address https://www.sciencedirect.com/science/article/pii/S0021967321005653?via%3Dihub
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