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Amino acids as substrates for preparation of monomers with imide rings
Author(s) -
Orzeszko Andrzej
Publication year - 1991
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.1991.070420826
Subject(s) - imide , monomer , polymer chemistry , amino acid , materials science , chemistry , polymer science , organic chemistry , polymer , biochemistry
The reaction of pyromellitic anhydride PMDA with some amino acids lead to monomers, which were used to synthesize new polymers. Application to glycine, D , L ‐alanine and β‐alanine gave three bis‐acid chlorides. These are able to condense with glycols and diamines to yield a series of new copolyimides. Amino acids of two carboxylic groups D , L ‐glutamic acid and D , L ‐aspartic acid gave, in reaction with PMDA, two similar dianhydrides (4) and (5). However, the condensation with aromatic amines lead to two different compounds. It was proved that, under the conditions studied, formation of hexa‐membered imide rings was impossible while penta‐membered imides formed without difficulty. Thermogravimetric analyses of these polymers were also carried out.