聚丙烯树脂分子量测试的核磁共振研究

NMR Study on Molecular Weight and Molecular Distribution of Polypropylene Resin

采用低分辨率脉冲核磁共振法测定聚丙烯树脂分子量及分子量分布,应用自旋回波(CPMG)法测定T2,由此获得T2-Mw、T2-Mn线性关系,实践应用证明,该技术成熟可行,可以应用于科研开发和生产控制中。

The molecular weights and molecular distribution of polypropylene resin are determined by low frequency pulse NMR. T_2 is determined by CPMG. The results show that, T_2 is in a linear relationship with the weight. It is successfully used in industrial practice and is also applicable in research and process control.