作者:Jyh-Chien Chen、Jin-An Wu、Shih-Wei Li、Shang-Chih Chou
DOI:10.1016/j.reactfunctpolym.2014.02.010
日期:2014.5
Abstract A new aromatic diamine, 2,2′,6,6′-tetraphenyl-4,4′-oxydianiline (4PhODA, 4 ), has been synthesized by oxidation, bromination, Suzuki coupling and reduction of 4,4′-oxydianiline (4,4′-ODA). Highly phenylated polyimides PI7a-f were prepared from diamine 4 and six commercially available aromatic dianhydrides by one-step method. The inherent viscosity of these polyimides ranged from 0.33 to 0.91 dL/g
摘要通过氧化,溴化,Suzuki偶联和还原4,4'-氧二苯胺(2,2',6,6'-四苯基-4,4'-氧二苯胺(4PhODA,4)合成了一种新的芳族二胺(4PhODA,4)。 4,4'-ODA)。由二胺4和六种可商购的芳族二酐通过一步法制备高度苯基化的聚酰亚胺PI7a-f。这些聚酰亚胺的比浓对数粘度在0.33至0.91 dL / g的范围内,以0.5 g / dL的NMP或间甲酚溶液在30°C下测得。这些高度苯基化的聚酰亚胺显示出优异的溶解性。尤其是,衍生自刚性均苯四甲酸二酐(PMDA)的聚酰亚胺PI7a在室温下可溶于DMAc,NMP,在60°C下可溶于DMF,氯仿和间甲酚。可以通过从NMP或间甲酚溶液中流延获得透明,柔性和坚韧的薄膜。它们表现出良好的热稳定性,除了含均苯四甲酸二酰亚胺的PI7a和含萘二甲酰亚胺的PI7f(T g> 350°C)外,通过热力学分析(TMA)测量的玻璃化转变温度