Synthesis and properties of novel soluble poly(amide-imide)s with different pendant substituents
作者:Wenze Li、Xinyu Qian、Haibiao Shi、Weiyi Zhou、Yuting Cai、Yu Liu、Kunzhi Shen
DOI:10.1002/pola.28698
日期:2017.10.1
diimide‐diacids, two series of novel poly(amide‐imide)s (PAIs) (IIIa–IIIe and IVa–IVe) bearing different pendant groups were prepared by direct polymerization with various aromatic diamines (a–e). All the PAIs had a high glass transition temperatures (Tgs, 232–265 °C), excellent thermal stability (exhibiting only 5% weight loss at 493–542 °C under nitrogen) and good solubility in various organic solvents due to
两种新型的氟化二酰亚胺-二酸单体-[2,2'-(4,4'-(3'-甲基联苯-2,5-二基)双(氧基)双(3-(三氟甲基)-4,1-亚苯基))双(1,3-二氧代异吲哚啉-5-羧酸)](III)和[2,2'-(4,4'-(3'-(三氟甲基)联苯-2,5-二基)bis(氧)双(3-(三氟甲基)-4,1-亚苯基))双(1,3-二氧代异吲哚啉-5-羧酸)](IV)-分别通过二胺I和II与两个胺的缩合反应而设计和制备偏苯三酸酐的摩尔当量。从两种二酰亚胺二酸中,通过与各种芳族二胺(a-e)直接聚合制备了两个带有不同侧基的新型聚酰胺酰胺(PAIs)系列(IIIa-IIIe和IVa-IVe)。所有PAI的玻璃化转变温度都很高(T gs,232–265°C),极好的热稳定性(在氮气氛下在493–542°C下仅损失5%的重量),并且由于引入了庞大的侧基而在各种有机溶剂中具有良好的溶解性。这些PAI的流延膜(80