【摘要】 本文综述了近年来凝胶渗透色谱在油溶性和水溶性高聚物分子量测定中的应用,着重分析测试条件对水溶性样品分子量的影响并归纳了解决的办法。同时,介绍了配备紫外可见和示差折光检测器、示差和光散射检测器后凝胶色谱的应用。此外,还概述了几种常见高聚物分子量的标定和校准方法,以便多种方法相互验证,得到较准确的分子量值。更多还原

【Abstract】 The application and development of molecular weight estimation for oils-soluble and water-soluble polymers by gel permeation chromatography( GPC) is summarized. The effects of p H,salt concentration and temperature on molecular weight estimation of water-soluble ones are presented. In addition,novel utilizations of GPC with dual detectors are introduced. Calibration methodologies in GPC,including various instrumental method and director calibration,as well as universal calibration are reviewed. With the combination of multi-detectors,the performance of one detector could be effectively checked against others and the estimated molecular weights of polymer tend to be reliable and precise.更多还原