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Preparation, properties and complex formation ability of poly(ether-ester)s of poly(ethylene glycol)s and 2,6-pyridinedicarboxylic acid

✍ Scribed by Milena Ignatova; Nevena Manolova; Iliya Rashkov; Maurice Sepulchre; Nicolas Spassky

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
605 KB
Volume
196
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Poly(ether‐ester)s of poly(ethylene glycol)s (PEGs) and 2,6‐pyridinedicarboxylic acid (PDA) were synthesized by polycondensation of PDA and PEG in the presence of dicyclohexylcarbodiimide and dimethylaminopyridine and by polycondensation of acyl chloride of PDA and PEG in the presence of triethylamine at 45°C. The polymers were characterized by GPC, UV, IR and ^1^H and ^13^C NMR spectroscopy. The complex formation between poly(acrylic acid) (PAA) or poly(methacrylic acid) (PMA) and the poly(ether‐ester)s was studied. It occurs below the critical polyether chain length necessary for complex formation because of the stabilizing effect of the PDA hydrophobic residues.

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