聚苯撑苯并二噁唑(PBO)的合成

Synthesis of Poly(p-phenylene benzobisoxazole) (PBO)

分别由对苯二甲酸(TPA)、对苯二甲酰氯(TPC)和4,6-二氨基间苯二酚盐酸盐(DAR)聚合得到了[η]=15.2、10.4 dL/g的PBO聚合物,对聚合物进行了红外光谱及元素分析,用透射电镜观察了聚合物膜的形态,同时比较了两种聚合体系对聚合反应的影响。

poly(p-phenylene benzobisoxazole)s were prepared by two ways, i. e. by condensing diaminoresorcinol with terephthalic acid and terephthaloyl dichloride in polyphosphoric acid respectively. The intrinsic viscosity of PBO polymers were determined to be 15.2 and 10.4 dL/g in methanesulfonic acid at 30℃. IR, elementary analysis and TEM were used to study the structure of PBO and PBO films. The difference between the two ways was discussed.