One-pot polymerization of polyimide from 3,3',4,4'-biphenyl tetracarboxylic dianhydride (BPDA) and 4,4'-oxydianiline (ODA) was examined. The equilibrium in the polyimide with water was examined in detail in p-chlorophenol solution during the polymerization. The equilibrium constant was expressed by log K = 1.50 + 1433 (1/T). The polymerization reaction is exothermic. The molecular weight increased with decrease of temperature. (C) 1996 John Wiley & Sons, Inc. [References: 17]
展开▼
机译：研究了由3,3'，4,4'-联苯四羧酸二酐（BPDA）和4,4'-氧二苯胺（ODA）进行的一锅聚合。在聚合过程中，在对氯苯酚溶液中详细检查了聚酰亚胺与水的平衡。平衡常数由log K = 1.50 + 1433（1 / T）表示。聚合反应是放热的。分子量随温度降低而增加。 （C）1996 John Wiley＆Sons，Inc. [参考：17]
展开▼
