Number average molecular weight

The number average molecular weight was determined as 78 650, the weight average molecular weight as 125 446, the molecular weight distribution as 1. 59 by gel permeation chromatography.

采用凝胶渗透色谱仪测试其数均相对分子质量为78 650，重均相对分子质量为125 446，相对分子质量分布为1．59。

In addition, the obtained results showed that the number average molecular weight is independent of the conversion and only relative to the reaction temperature at lower conversion stage.

此外，结果表明，在低转化阶段，数均分子量不随转化率改变，仅与聚合反应温度有关。

The glyceryl was used as standard to calculate Number—Average Molecular Weight of polyether. The result showed that it was accurate, convenient and high speed method.

用甘油基作标准求出了聚醚的数均分子量，结果表明此法准确、方便、快速。