疏水缔合聚合物溶液特性及评价方法

为了研究疏水缔合聚合物溶液的结构和流动特性,同时探索适合于疏水缔合聚合物自身的实验评价方法,以聚合物凝胶为对比对象,分析了静态条件下浓度和矿化度对疏水缔合聚合物溶液结构的影响及在多孔介质中疏水缔合聚合物溶液流动动态表现。结果表明:一定条件下聚合物凝胶和疏水缔合聚合物溶液具有相似的溶液结构和流动特性;胶态分散凝胶在多孔介质中的流动存在转变压力,2组流动实验中疏水缔合聚合物溶液也表现出类似的转变压力,分析认为聚合物凝胶分子链间(内)的联结是化学交联,而疏水缔合聚合物为物理缔合,类似的分子链间(内)联结方式是两种体系有相似流动特性的内在原因。建议对疏水缔合聚合物溶液进行特性评价时应该同时结合HPAM溶液和聚合物凝胶溶液特性评价方法,开展深入的疏水缔合聚合物溶液与聚合物凝胶的对比研究工作。

Research on solution property and evaluation method of polymer gels and hydrophobic associating polymer

To find out the exact evaluation method proper to the hydrophobic associating polymer, the property of polymer gels and hydrophobic associating polymer solution under static condition and dynamic condition are compared in this paper. The analysis shows that the molecule chain coupling is the common feature of the two systems. However, the biggest difference between them is that polymer gels is chemistry association and hydrophobic associating polymer solution is physics association, and the intension of molecule chain coupling between them is different, too. Experiment results show the two systems share similar flowing features. Transition pressure exists in the flowing of colloidal dispersion gels through porous media, while hydrophobic associating polymer solution have similar transition pressure when the solution consistency below the critical consistency or above the critical passes through high speed shearing. It is obvious that the similar molecule chain coupling makes the two systems have possibility of reference for each other either from the perspectives of the research on their properties. It is suggested that the methods of HPAM and polymer gels should be also used to evaluate the hydrophobic associating polymer, so as to carry out the comparative study on the hydrophobic associating polymer and polymer gels.