Preferential solvation of a dicyanate ester monomer and poly(sulfone) in different organic solvents by size-exclusion chromatography

• Published in: Journal of Chromatography A Vol. 942; no. 1; pp. 53 - 61
• Main Authors: Recalde, Ileana B, Porcar, Iolanda, Campos, Agustı́n, Gómez, Clara M
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 04-01-2002; Elsevier
• Subjects: Applied sciences; Arocy B10; Bisphenol A dicyanate; Chromatography, Gel - methods; Cyanates - chemistry; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; Polymers - chemistry; Polysulfone; Properties and characterization; Solubility; Solution and gel properties; Solvents - chemistry; Sulfones - chemistry; Viscosity; Bisphenol A dicyanate; Polysulfone; Solvation parameters; Arocy B10; Chemical solution; Organic solvent; Solvation; Sulfone polymer; Ternary system; Refractometry; Monomer; Tetrahydrofurane; Gel permeation chromatography
• ISSN: 0021-9673
• DOI: 10.1016/S0021-9673(01)01378-4

Preferential solvation parameters
λ 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
λ 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
λ values being those obtained in dicloromethane. These results were in accordance with the intrinsic viscosity values of the PSF–solvent systems. The variation of
λ values with the Arocy B10 concentration is strongly dependent upon the nature of the solvent.