Acta Phys. -Chim. Sin. ›› 2006, Vol. 22 ›› Issue (05): 631-634.doi: 10.3866/PKU.WHXB20060522

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The Molecular Configuration and Its Influential Factors of Al3+ Cross-linked Polyacrylamide Gel

LU Xiang-Guo;WANG Wei   

  1. Key Laboratory of Enhanced Oil and Gas Recovery of Education Ministry, Daqing Petroleum Institute,Daqing 163318, P. R. China
  • Received:2005-11-01 Revised:2005-12-22 Published:2006-04-28
  • Contact: LU, Xiang-Guo

Abstract: The chemical composition, percolation performace, and microscopic configuration of“intramolecular cross鄄linked”gel systems were investigated by changing the contents of Na+, Ca2+, Mg2+ ions and polymer concentration in water solvent. The results show that the viscosity of“intramolecular cross-linked”polymer solution changes not too much with time, but the resistance factor and residual resistance factor are obviously larger than those of the ordinary polymer solution with the same viscosity, and the residual resistance factor is larger than the resistance factor. The contents of Na+, Ca2+ and Mg2+ ions and polymer concentrations will affect the molecular configuration of the cross-linked polymer, in which the effect of Ca2+ and Mg2+ is the largest.

Key words: Al3+ cross-linked polyacrylamide gel, Molecular configuration, Influential factors, Percolation performance, Stern-Grahame double layer model