凝胶渗透色谱法测定石油树脂的相对分子质量及相对分子质量分布

Determining molecular weight distribution and relative molecular weight of resins by gel permeation chromatography

以单分散聚苯乙烯为标样,首次建立了用凝胶渗透色谱(GPC)表征石油树脂类低相对分子质量聚合物的平均相对分子质量及相对分子质量分布的方法。并进行了重复性实验,测定了不同批号的石油树脂的相对分子质量及分布。实验结果表明:树脂样品的低分子部分影响数均分子量,高分子部分影响重均分子量。

A gel permeation chromatography method was developed for determining molecular weight distribution and relative molecular weight averages of resins for the first time with PS as standard sample. And the data of number-, weight-molecular weight averages and molecular weight distribution of different samples were calculated.