本文从理论上研究了聚对羟基苯甲酸酯(简称PHB或PHBA)的分子量分布。理论分析表明,由对羟基苯甲酸酯缩聚制得的PHB的分子量分布与Flory分布稍有不同,可以认为是修正的Flory分布;而由对羟基苯甲酸制得的PHBA仍可用Flory分布表征。由于未发现上述聚合物的溶剂,故不可能对其分子量分布进行实验研究。 This paper theoretically studied the molecular weight distribution of poly (paraben) (PHB or PHBA). The theoretical analysis shows that the molecular weight distribution of PHB prepared by polycondensation of p-hydroxybenzoate is slightly different from the Flory distribution, which can be considered as the modified Flory distribution. The PHBA prepared from p-hydroxybenzoic acid can still be characterized by the Flory distribution. Since no solvent was found for the above polymers, it is not possible to conduct experimental studies on its molecular weight distribution.