Premium
New optically active poly(ester‐imide)s derived from N,N ′‐(4,4′‐carbonyldiphthaloyl)‐bis‐ L ‐phenylalanine diacid chloride
Author(s) -
Mallakpour Shadpour E.,
Hajipour AbdolReza,
Zamanlou MohammadReza
Publication year - 2002
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.10630
Subject(s) - specific rotation , imide , polymer chemistry , condensation polymer , phenolphthalein , benzophenone , chemistry , polymerization , chloride , materials science , polymer , organic chemistry
New optically active poly(ester‐imide)s containing benzophenone tetracarboxylic and L ‐phenylalanine moieties were synthesized from N,N ′(4,4′‐carbonyldiphthaloyl)‐Bis‐ L ‐phenylalanine diacid chloride (1) with several aromatic diols such as phenolphthalein (2a), hydroquinone (2b), 2,4‐dihydroxyacetophenone (2c), 1,8‐dihydroxyanthraquinone (2d), bisphenol‐A (2e), 1,5‐dihydroxynaphthalene (2f), 1,4‐dihydroxyanthraquinone (2g) and 4,4′‐dihydroxybiphenyl (2h) by low‐temperature solution polycondensation in CHCl 3 /Et 3 N solution. The polymerization reactions were started at 0°C and proceeded at room temperature, producing a series of optically active poly (ester‐imide)s with inherent viscosities of about 0.12–0.31 dL g −1 . All of the above polymers are optically active and have been fully characterized by IR spectroscopy, elemental analyses, and specific rotation. Thermal properties of the poly(ester‐imide)s have been investigated using thermal gravimetric analysis. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 315–320, 2002