S. Mallakpour, M. Kolahdoozan
Aug 1, 2007
Citations
1
Influential Citations
37
Citations
Journal
European Polymer Journal
Abstract
Abstract 5-(2-Phthalimidyl-3-methyl butanoylamino)isophthalic acid ( 5 ), as a novel diacid monomer containing phthalimide and flexible chiral groups, was prepared by the reaction of 2-phthalimidyl-3-methyl butyric acid chloride ( 4 ) with 5-aminoisophthalic acid ( 5AIPA ) in dry N , N -dimethylacetamide (DMAc). A series of novel polyesters ( PE )s containing phthalimide group was prepared by the reaction of diacid monomer 5 with several aromatic diols via direct polyesterification with the tosyl chloride/pyridine/dimethylformamide (DMF) system as a condensing agent. The resulting new polymers were obtained in good yields with inherent viscosities ranging between 0.37 and 0.61 dL g −1 and were characterized with FT-IR, 1 H NMR, elemental and thermogravimetric analysis techniques. These polymers are readily soluble in amide type solvents such as DMAc, DMF, 1-methyl-2-pyrrolidone, hexamethyl triaminophosphine, dimethyl sulfoxide and protic solvents such as sulfuric acid. Thermogravimetric analysis showed that the 10% weight loss temperature in a nitrogen atmosphere was more than 345 °C, which indicates that the resulting PEs have a good thermal stability as well as excellent solubility.