Al^(3+)交联聚合物分子构型及其影响因素

The Molecular Configuration and Its Influential Factors of Al^(3+) Cross-linked Polyacrylamide Gel

通过改变溶剂水中Na+、Ca2+、Mg2+的组成和聚合物浓度,对发生“分子内”交联反应凝胶体系的化学组成进行了研究,并对其渗流特性和微观形态进行实验研究和机理分析.研究结果表明,“分子内”交联聚合物黏度随时间变化不大,但阻力系数和残余阻力系数明显大于具有相同黏度聚合物溶液,且残余阻力系数大于阻力系数.Na+、Ca2+、Mg2+和聚合物浓度将影响交联聚合物分子构型,其中Ca2+/Mg2+的影响程度较大.

The chemical composition, percolation performace, and microscopic configuration of ＂intramolecular cross-linked＂ gel systems were investigated by changing the contents of Na^＋, Ca^2＋, Mg^2＋ 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^＋, Ca^2＋ and Mg^2＋ ions and polymer concentrations will affect the molecular configuration of the crosslinked polymer, in which the effect of Ca^2＋ and Mg^2＋ is the largest.