超支化半芳香型聚酰胺的合成及其表征

Synthesis and property of hyperbranched semi-aromatic polyamide

利用溶液聚合方法,以对苯二胺与氨三乙酸为原料,制备了A2+B3型超支化半芳香型聚酰胺。利用傅立叶变换红外光谱(FTIR)、核磁共振谱(1HNMR)对制备的超支化半芳香型聚酰胺进行了结构表征。用乌式粘度计、热重分析(TG)测定了超支化半芳香型聚酰胺的粘度和热稳定性,并从微观反应机理。

P-Phenylene diamine and Nitrilotrizcetic acid were chosen as monomers to prepare soluble A2＋B3 type hyperbranched polyamides. The structures of polymerization products were confirmed as polyamides according to the spectrums of FTIR and ^1HNMR. Intrinsic viscosity and thermogram of the hyperbranched polyamides were investigated by viscosity measurement and TG. The studies focused on the effects of monomers＇ concentration, activator, B3 monomer＇s dosage, reactive temperature and reactive time on the intrinsic viscosity of the hyperbranched polyamides based on the microcosmic reactive mechanism and topologic structure.