新型含磷可溶性共聚芳酰胺的合成

Synthesis of Novel Soluble Phosphorus-containing Aromatic Copolyamide

以双(对-羧苯基)苯基氧化膦(BCPPO),对苯二甲酸(TPA)和4,4′-二氨基二苯醚(ODA)为原料,通过Yamazaki膦酰化法合成聚芳酰胺。研究了反应温度、单体浓度和溶剂体系对聚合物相对分子质量的影响,确定了聚合反应的最佳工艺条件为:单体摩尔浓度为0.3mol/L,N-甲基呲咯烷酮(NMP)的用量是呲啶的3倍,聚合反应的温度为110℃。采用红外光谱对合成聚合物进行了结构表征,合成的聚芳酰胺可溶于N-甲基吡咯烷酮(NMP)、N,N-二甲基甲酰胺(DMF)、N,N-二甲基乙酰胺(DMAC)等有机溶剂中。

Aromatic polyamide was synthesized by the polycondensation of bis （4-carboxyphenyl） phenyl phosphine oxide （BCPPO） and terephthalic acid （TPA） with 4, 4′-diaminodiphenyl ether （ODA） by Yamazaki phosphorylation reaction. The effects of reaction temperature, monomers concentration and solvent system on the relative molecular weight of the polymer Were investigated, and the optimum technical conditions were determined ; the monomers concentration was 0. 3 mol/L, the content of N-methylpyrrolidone （NMP） was 3 times of that of pyridine （Py） , and reaction temperature was 110 ℃. The structure of the phosphoruscontaining aromatic polyamide copolymer was characterized by FT-IR. The copolymer could readily soluble in a variety of organic solvents such as NMP, dimethyl formamide, dimethyl acetamide and so on.