Formation of the chain microstructure in the synthesis of adamantane-containing copolyimides in molten benzoic acid
作者:M. R. Batuashvili、A. Yu. Tsegel´skaya、N. S. Perov、G. K. Semenova、B. S. Orlinson、A. A. Kuznetsov
DOI:10.1007/s11172-015-0957-8
日期:2015.4
High-resolution 13C NMR spectroscopy was applied to study the chain microstructure of copolyimides obtained at 140 °C by one-pot high-temperature polycondensation in molten benzoic acid from 2,2-propylidene-bis(4-phenylene-4´-oxyphthalic acid) dianhydride (DA, intermonomer) and two comonomers, 1,3-bis(2-aminoethyl)adamantane (ADA) and 9,9-bis(4aminophenyl)fluorene, varying the order of introduction
应用高分辨率 13C NMR 光谱研究在 140 °C 下通过一锅高温缩聚在熔融苯甲酸中由 2,2-亚丙基-双(4-亚苯基-4'-氧邻苯二甲酸)获得的共聚酰亚胺的链状微观结构) 二酐(DA,共聚单体)和两种共聚单体,1,3-双(2-氨基乙基)金刚烷(ADA)和 9,9-双(4-氨基苯基)芴,改变了将组分引入系统的顺序。由 13C NMR 数据确定的链微异质系数的实验发现值与使用作者早期建立的数学模型和氨基酰化和酰氨基酰亚胺化模型反应的动力学数据理论计算的值非常吻合。酸碎片。ADA—DA-2,