分子间缔合作用对缔合聚合物溶液阻力系数与残余阻力系数的影响

Effect of intermolecular association action on resistance factor and residual resistance factor in associating polymer solution

通过在缔合聚合物溶液中加入具有"内疏水,外亲水"结构的β-环糊精,研究了分子间缔合作用对缔合聚合物溶液的阻力系数与残余阻力系数的影响。实验结果表明,加入β-环糊精后,缔合聚合物溶液的粘度降低了98%左右,其微观结构由空间网络结构变为"柏树枝"状的松散结构,β-环糊精能消除缔合聚合物溶液分子间缔合作用;分子间缔合作用对缔合聚合物溶液阻力系数的贡献为83%左右,对残余阻力系数的贡献为59%左右,分子间缔合作用是缔合聚合物溶液建立阻力系数与残余阻力系数的主要方式;该作用对分析缔合聚合物溶液在地层中的吸附滞留量具有参考意义。

Few attentions has been paid on the effect of intermolecular association action on resistance factor (RF) and residual resistance factor (RRF) in associating polymer solution.In this paper,β-cyclodextrin,with 'internal hydrophobic,external hydrophilic' structure,is added into associating polymer solution to study the change of RF and RRF before and after eliminating intermolecular association action.The experiment results show that adding β-cyclodextrin can reduce the viscosity of associating polymer solution by 98% or so,spatial three-dimensional network structure is changed into loose structure similar to 'Bo tree' shape,so,it is proved that β-cyclodextrin can eliminate the intermolecular association action of associating polymer solution;the contribution of intermolecular association action to establish RF is 83% or so,the contribution to establish RFF is about 59%,intermolecular association is the main way to establish resistance factor and residual resistance factor in associating polymer solution;the results of the research have referential significance in investigating the absorption of polymer solution in reservoirs.