超高分子量聚丙烯酰胺分子量测定方法研究

STUDY ON THE DETERMINATION OF INTRINSIC VISCOSITY OF SUPER-HIGH MOLECULAR WEIGHT PARTIAL-HYDROLYTIC POLYACRYLAMIDE

通过对粘度法测定超高分子量部分水解聚丙烯酰胺 (HPAM)分子量方法的研究 ,并针对外推法繁琐、耗时 ,而一点法误差较大的问题 ,提出了一种函数变换的方法——算图法。将算图法与外推法和几种常用的单点法进行对比。结果表明 ,算图法的准确性远远超过单点法 ,且简便、快捷 ,是测定 HPAM分子量较为理想的方法。

There are two approaches usually used to determine the intrinsic viscosity () of polyacrylamide. The extrapolation method is much more accurate but inefficient. However the single point method is simple and rapid but too big erroneous. The nomographic technique was introduced to calculate the intrinsic viscosity in this paper, first of all, the curve of were drew through a set of basic data of polyacrylamide, then the of one sample were obtained by the curve. The comparison of nomographic method with extrapolation method and single point one revealed that the nomographic technique is convenient and accurate.