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Thermodynamic interactions of a copolyester of bisphenol A with terephthalic acid and isophthalic acid with some solvents
Author(s) -
Sakar Dolunay,
Cankurtaran Ozlem,
Karaman Ferdane Yilmaz
Publication year - 2005
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.22235
Subject(s) - terephthalic acid , copolyester , isophthalic acid , hildebrand solubility parameter , inverse gas chromatography , polymer chemistry , chlorobenzene , solvent , benzene , chemistry , organic chemistry , solubility , isoamyl acetate , materials science , ethyl acetate , polymer , polyester , catalysis
The retention diagrams of n ‐octane, n ‐nonane, n ‐decane, n ‐butyl acetate, isobutyl acetate, and isoamyl acetate on the polyarylate Ardel D‐100, a copolyester of bisphenol A with terephthalic acid and isophthalic acid, were plotted at temperatures between 120 and 260°C by an inverse gas chromatography technique. The glass‐transition temperature of the copolymer was determined to be 190°C from the discontinuity of these diagrams. The retention diagrams of benzene, ethyl benzene, n ‐propyl benzene, isopropyl benzene, and chlorobenzene were also plotted between 200 and 260°C. The specific retention volume, weight fraction activity coefficient, Flory–Huggins polymer–solvent interaction parameter, hard‐core polymer–solvent interaction parameter, and effective exchange energy parameter were determined for the studied solvents. The parameters suggest that the studied aromatic hydrocarbons and aliphatic esters are moderately good solvents and chlorobenzene is a very good solvent for this copolyester, but the n ‐alkanes are very poor solvents. The solubility parameter of this copolymer was determined to be 11.6 (cal/cm 3 ) 1/2 at room temperature by extrapolation of the values of the solubility parameters from the studied temperatures to 25°C. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 2365–2368, 2005