低温溶液缩聚制备芳香族聚砜酰胺的研究

Study on Preparation of Polysulfonamide by Low-temperature Solution Polycondensation

采用低温溶液缩聚的方法,将对位二氨基二苯砜(4,4′-DDS)、间位二氨基二苯砜(3,3′-DDS)和对苯二甲酰氯(TPC)在二甲基乙酰胺(DMAc)中进行缩聚,制得较高相对分子质量的芳香族聚砜酰胺树脂,并研究了各反应因素对聚合物相对分子质量的影响。结果表明:浆液浓度为13%,反应初始温度为10℃,TPC/DDS摩尔比为1.001～1.003,反应时间50～60min时,可获得理想的聚合物。

Polysulfonamide with relatively high inherent viscosity was prerared by the method of low-temperature solution condensation polymerization. The effect of polymerization time, initial reaction temperature, TPC/DDS mole ration and dope concentration on the molecular weight of polymer were studied. The optimal reactive conditions were dope concentration of 13 %, initial reaction temperature of 10 ℃, the TPC/DDS mole ratio of 1.001～1.003, the polymertization time of 50～60 min.