高等学校化学学报

高等学校化学学报 ›› 1985, Vol. 6 ›› Issue (8): 753.

• 研究论文 • 上一篇    

浓度效应对GPC保留体积的影响及其分离机理的讨论

张鸿安1, 滕家春1, 葛卫东1, 张明枢2   

  1. 1. 吉林大学化学系;
    2. 上海石油化工专科学校
  • 收稿日期:1984-01-07 出版日期:1985-08-24 发布日期:1985-08-24

Concentration Effect on GPC Retention Volume

Zhang Hongan1, Teng Fachun1, Ge Weidong1, Zhang Min-shu2   

  1. 1. Department of Chemistry, Jilin University, Changchun;
    2. Shanghai Academia, Shanghai
  • Received:1984-01-07 Online:1985-08-24 Published:1985-08-24

PDF (PC)

被引次数

2

摘要： 本文对不同溶剂体系、不同浓度、不同分子量的PS标样测定了GPC保留体积随浓度的变化值,研究了流体力学体积情况,得到良溶剂的Vr～C曲线与不良溶剂的Vr～C曲线有交叉现象,交叉点随分子量增大而移向浓度小的方向,并探讨了其分离机理。

Abstract: Concentration effect in the high performance GFChas been investigated. The study of the contraction of hydromechanical volume has been made htough determination of the varying values of the being clution volume with the change of concentrations.On the case of higher molecular weights and higher concentration, the curve of Vc-Cin good solvent crosses with the Vc-Ccurve in bad loivend for the samples with the same molecular weight. The point of intersection of the curves shifts to the direction of the lower concentration as the molecular weight increases.

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