Contribution of Flow Field Flow Fractionation with on Line Static and Dynamic Light Scattering to the Study of Hydrosoluble Polyelectrolyte Complexesa

Formation of polyelectrolyte complexes (PEC) between a low molar mass polyaspartate and various poly(trimethylammonium propyl methacrylamide chloride), with different molar masses was studied. These PECs were studied by coupling flow field flow fractionation (F4)-multi angle laser light scattering (...

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Published inAnalytica chimica acta Vol. 604; no. 1; p. 2
Main Authors Le Cerf, Didier, Simon, Sebastien, Argillier, Jean-Francois, Picton, Luc
Format Journal Article
LanguageEnglish
Published 01.11.2007
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Summary:Formation of polyelectrolyte complexes (PEC) between a low molar mass polyaspartate and various poly(trimethylammonium propyl methacrylamide chloride), with different molar masses was studied. These PECs were studied by coupling flow field flow fractionation (F4)-multi angle laser light scattering (MALLS)-quasi elastic light scattering (QELS)-differentiel refractive index (DRI). Soluble PECs were prepared from PCs and PA in a charge ratio largely in favor of positive charge. The F4/MALLS/QELS/DRI permitted the characterization of polydisperse PECs. Changing the molar mass of PC leads to a decrease of molar mass and size of the PECs. After a short period of aggregation, the PEC-100 tended toward single aggregates, which appeared as thermodynamically favored.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0003-2670