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采用凝胶渗透色谱法、１３ＣＮＭＲ和ＤＳＣ法测定了悬浮聚合ＰＶＣ树脂的平均分子量、间规度、结晶度和玻璃化温度．结果表明：聚合温度下降，ＰＶＣ的平均分子量上升，分子量的对数值与聚合温度的倒数成正比；ＰＶＣ的间规度和结晶度均增大，在形成结晶的间规链段的最短长度（ξｍｉｎ）为６时，由间规度计算的结晶度理论值与测定值接近；分子量和结晶度增加的共同作用，使ＰＶＣ的玻璃化转变温度上升．
The average molecular weight, the syndiotacticity, the crystallinity and the glass transition temperature of the suspension-polymerized PVC resin were determined by gel permeation chromatography, 13CNMR and DSC. The results showed that the polymerization temperature decreased, the average molecular weight of PVC increased, the logarithm of molecular weight was proportional to the inverse of polymerization temperature, and the degree of interconversion and crystallinity of PVC increased. The minimum length of the syndiotactic chain (ξmin ) Is 6, the theoretical value of crystallinity calculated by the interdecadal degree is close to the measured value. The combined effect of the increase of the molecular weight and the crystallinity increases the glass transition temperature of the PVC.