Kononova Svetlana V, Gubanova Galina N, Lebedeva Galina K, Kruchinina Elena V, Vlasova Elena N, Popova Elena N, Zakharova Natalya V, Vylegzhanina Milana E, Novozhilova Elena A, Danilova Ksenia V
Branch of Petersburg Nuclear Physics Institute Named by B.P. Konstantinov of National Research Centre «Kurchatov Institute»-Institute of Macromolecular Compounds, Bolshoy pr. 31, 199004 Saint Petersburg, Russia.
Saint-Petersburg State Institute of Technology, Technical University, 190013 Saint Petersburg, Russia.
Membranes (Basel). 2025 Jan 13;15(1):23. doi: 10.3390/membranes15010023.
New aromatic co-polyamide-imides (coPAIs) containing both carboxyl and hydroxyl groups in the repeating units were synthesized for the first time. Transport, thermal and morphological properties of dense nonporous membranes from PAIs obtained using the diacid chloride of 2-(4-carboxyphenyl)-1,3-dioxoisoindoline-5-carboxylic acid and diamines 5,5'-methylene-bis (2-aminophenol)) and 3,5-Diaminobenzoic acid, taken in molar ratios of 7:3, 1:1, and 3:7, have been studied. High levels of membrane permeability accompanied by high selectivity for mixtures of liquids with significantly different polarities were determined by realization of intra- and intermolecular interactions in polymer, which was proved by thermal analyses and hydrodynamic characteristics of coPAIs. This effect is discussed in the context of the effectiveness of intermolecular interactions between polymer chains containing carboxyl and hydroxyl functional groups.
首次合成了在重复单元中同时含有羧基和羟基的新型芳香族共聚酰胺酰亚胺（coPAIs）。研究了使用2-(4-羧基苯基)-1,3-二氧代异吲哚啉-5-羧酸二酰氯与二胺5,5'-亚甲基双(2-氨基苯酚)和3,5-二氨基苯甲酸，以7:3、1:1和3:7的摩尔比制成的PAIs致密无孔膜的传输、热性能和形态学性能。通过聚合物中分子内和分子间相互作用的实现，确定了高膜渗透性以及对极性显著不同的液体混合物的高选择性，这通过coPAIs的热分析和流体动力学特性得到了证明。在含有羧基和羟基官能团的聚合物链之间分子间相互作用的有效性背景下讨论了这种效应。
