title: Preferential solvation of a dicyanate ester monomer and poly(sulfone) in different organic solvents by size-exclusion chromatography.
abstract: 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.
authors.affiliation: Department de Química Física and Institut de Ciència dels Materials (ICMUV), Universitat de València, Burjassot, Spain.
authors.forename: Ileana B
authors.initials: IB
authors.lastname: Recalde
authors.forename: Iolanda
authors.initials: I
authors.lastname: Porcar
authors.forename: Agustín
authors.initials: A
authors.lastname: Campos
authors.forename: Clara M
authors.initials: CM
authors.lastname: Gómez
mesh_terms: D002850:Chromatography, Gel / Q000379:methods*; D003485:Cyanates / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012995:Solubility; D012997:Solvents / Q000737:chemistry*; D013450:Sulfones / Q000737:chemistry*; D014783:Viscosity
chemical_list: D003485:Cyanates; D011108:Polymers; D012997:Solvents; D013450:Sulfones; C017662:polysulfone P 1700