Publikace detail

Characterization of Alkyd Resins by Size Exclusion Chromatography Coupled with a Multi-Angle Light Scattering Photometer

Autoři: Varečková Daniela | Podzimek Štěpán | Lebduška Jan

Rok: 2006

Druh publikace: článek v odborném periodiku

Název zdroje: Analytica Chimica Acta

Název nakladatele: Elsevier Science BV

Místo vydání: Amsterdam

Strana od-do: 31-36

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	XX	XX
eng	Characterization of Alkyd Resins by Size Exclusion Chromatography Coupled with a Multi-Angle Light Scattering Photometer	An on-line multi-angle light scattering detector (MALS) coupled with size exclusion chromatography (SEC) has been used for the determination of molar mass and size distribution of alkyd resins. Molar mass distribution of alkyd resins is usually determined by SEC using calibration by polystyrene standards (PS). Since the molecules of alkyd resins are significantly more compact than those of linear polystyrene the molar mass determined by conventional SEC is incorrect. The correct molar mass can be obtained using an on-line MALS detector that eliminates the column calibration. In addition, it allows sample differentiation in respect to their degree of branching. It was found that highly branched alkyd molecules have abnormal elution behavior.	alkyd resins; size exclusion chromatography; multi-angle light scattering

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