6533b7dafe1ef96bd126d902

RESEARCH PRODUCT

Preferential solvation of poly(methyl methacrylate) and a bisphenol A diglycidyl ether by size-exclusion chromatography

Lorena SolarAgustín CamposIolanda PorcarConcepción AbadClara M. Gómez

subject

Chemical PhenomenaSize-exclusion chromatographymacromolecular substancesBiochemistryAnalytical ChemistryGel permeation chromatographychemistry.chemical_compoundPolymer chemistryPolymethyl MethacrylateBenzhydryl CompoundsMethyl methacrylateFuransBisphenol A diglycidyl etherTetrahydrofuranChromatographyMolar massChemistry PhysicalOrganic Chemistrytechnology industry and agricultureGeneral MedicineEpoxyequipment and suppliesPoly(methyl methacrylate)Molecular Weightbody regionsSolubilitychemistryvisual_artCalibrationChromatography Gelvisual_art.visual_art_mediumEpoxy CompoundsAlgorithms

description

The preferential adsorption coefficient, lambda, of poly(methyl methacrylate), PMMA, in solutions formed by an epoxy resin in tetrahydrofuran (THF), was studied by size-exclusion chromatography (SEC). Only PMMA of lowest molar mass was preferentially solvated by epoxy but at low concentrations of epoxy in the mixture. At higher epoxy content PMMA was preferentially solvated by THF. A simultaneous and competitive solvation between the specific interactions PMMA-epoxy and the self association of epoxy at high concentrations would be the responsible of this inversion point. The more compacted coil of PMMA of higher molecular weights in solution could explain the lack of interaction of these polymers with epoxy. The results also indicated that lambda decreased with the molar mass. This variation has been attributed to the influence of the coil segment density on preferential adsorption.

yearjournalcountryeditionlanguage
2004-04-03Journal of Chromatography
https://doi.org/10.1016/j.chroma.2003.10.042