前文我们报道了用紫外和可见分光光度法测定以对羟基苯甲酸苯酯为单体的聚芳酯分子量。1976年Economy等曾报道气相色谱法测定聚芳酯的分子量。但是该方法操作较烦,若解聚物中含有酚类衍生物时,与苯酚分离困难,甚至不能进行测定。本文采用薄层色谱法,将聚芳酯解聚后的混合物与苯酚分离,从测得苯酚含量,计算出聚芳酯的 We have previously reported the determination of molecular weights of polyarylates based on phenyl p-hydroxybenzoate using UV and visible spectrophotometry. In 1976, it was reported by Economy et al. That the molecular weight of polyarylate was determined by gas chromatography. However, the method is troublesome to operate. If the depolymerization product contains phenolic derivatives, separation from phenol is difficult and even impossible to measure. In this paper, thin layer chromatography, the polyarylate after depolymerization mixture with phenol separation, measured from the phenol content calculated polyarylate