Chonghui Wang, Shigeo Nakamura
Feb 1, 1994
Citations
0
Influential Citations
14
Citations
Journal
Journal of Polymer Science Part A
Abstract
N,N-di(2-hydroxyethyl)-3-aminopropionic acid (M3) was synthesized and used for the preparation of a series of polyesters having amino acid moieties in the main chain and carboxyl groups as the side group. Polycondensation of M3, diols, bisphenol A, and isophthaloyl dichloride were performed in the presence of tertiary amine by solution and interfacial methods. Molecular weights of the polymers obtained by the solution method were not high, because oligomers produced at the early stage of reaction are ionized by H + ions from the by-product, and become nonreactive triethylamine hydrochloride