Novel Flame-Retardant and Thermally Stable Poly(Amide-imide)s Based on Bicyclo[2,2,2]oct-7-Ene-2,3,5,6-Tetracarboxylic Diimide and Phosphine Oxide in the Main Chain: Synthesis and Characterization
作者:Khalil Faghihi、Mohsen Hajibeygi、Meisam Shabanian
DOI:10.1002/jccs.200900091
日期:2009.6
good flame retardant properties. N,N′‐(bicyclo[2,2,2]oct‐7‐ene‐tetracarboxylic)‐bis‐L‐amino acids 3a‐f were prepared in quantitative yields by the condensation reaction of bicyclo[2,2,2]oct‐7‐ene‐2,3,5,6‐tetracarboxylic dianhydride 1 with L‐alanine 2a, L‐valine 2b, L‐leucine 2c, L‐isoleucine 2d, L‐phenyl alanine 2e and L‐2‐aminobutyric acid 2f in acetic acid solution. These polymers can be potentially
通过六个手性N,N' -(双环[2,2,2] oct-7-烯-四羧酸)-bis-L-的六个手性缩聚反应合成了六种新颖的聚(酰胺-酰亚胺)PAI 5a-f。氨基酸3a-f与双(3-氨基苯基)苯基氧化膦4在由N-甲基-2-吡咯烷酮(NMP),亚磷酸三苯酯(TPP),氯化钙(CaCl 2)和吡啶组成的培养基中。聚合反应产生了一系列阻燃且热稳定的聚(酰胺-酰亚胺)5a-f,具有高收率和0.39–0.83 dLg -1的良好固有粘度。所得聚合物通过FTIR 1进行了充分表征1 H NMR光谱,元素分析,比浓对数粘度,比旋光度和溶解度测试。使用热重分析(TGA和DTG)和有限氧指数(LOI)研究了PAI 5a-f的热性能和阻燃性能。通过热分析获得的数据(TGA和DTG)表明这些聚合物显示出良好的热稳定性。此外,TGA中高的炭收率和良好的LOI值表明所得聚合物表现出良好的阻燃性能。通过双环[2,2,2]的缩合反应,以定量收率制备了N,N'