6533b86cfe1ef96bd12c8cd0
RESEARCH PRODUCT
Preferential solvation of a dicyanate ester monomer and poly(sulfone) in different organic solvents by size-exclusion chromatography.
Ileana B. RecaldeClara M. GómezAgustín CamposIolanda Porcarsubject
ChromatographyPolymersViscosityIntrinsic viscosityOrganic ChemistrySize-exclusion chromatographySolvationGeneral MedicineBiochemistryAnalytical ChemistrySolventGel permeation chromatographychemistry.chemical_compoundMonomerchemistrySolubilityPolymer chemistryChromatography GelSolventsDimethylformamideSulfonesTetrahydrofuranCyanatesdescription
Preferential solvation parameters A in the ternary systems solvent (1) -monomer (2) -polymer (3) were determined as a tool to measure the compatibility between the cyanate ester monomer Arocy B10 and poly(sulfone), PSF, in the presence of three organic solvents: tetrahydrofuran, dimethylformamide and dicloromethane. The A parameter was measured by size-exclusion chromatography at different monomer-to-polymer ratios. The quantitative evaluation was rigorously made at polymer-diluted conditions. PSF was found to be preferentially solvated by the monomer. Concerning the solvent used, systems containing tetrahydrofuran showed the strongest solvation, the lowest A values being those obtained in dicloromethane. These results were in accordance with the intrinsic viscosity values of the PSF-solvent systems. The variation of A values with the Arocy B10 concentration is strongly dependent upon the nature of the solvent.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-02-02 | Journal of chromatography. A |