聚合物溶液的水动力学尺寸研究

Study on Hydrodynamic Size of Polymer Solution

聚合物在溶液中的性质及形态与所用溶剂有着很大的关系,溶剂的性质不同(如溶液的矿化度不同、溶液中表活剂的浓度不同等),聚合物分子形态伸展程度都会不一样,其在溶液中分子尺寸(水动力学半径)也会发生很大改变。运用微孔滤膜过滤法,通过对抗温抗盐聚合物(KYHPAM系列)在不同矿化度以及不同浓度表活剂的水中配成溶液,让其在恒定压力(0.2 MPa)下经过不同孔径滤膜后测定其滤液浓度、黏度等性质,结果发现聚合物的分子量和浓度、表活剂的浓度、矿化度等因素都会对聚合物的水动力尺寸产生不同程度的影响。

Properties and morphology of polymer in solution have a great relationship with the solvent used. The different natures of the solvents,such as different salinity,different concentrations of surfactant and so on,may bring about different form and stretch degree of the molecular in water. Consequently,the molecular size of polymers in solution will have big changes. The microporous membrane filtration method is applied to researching the hydrodynamic radius of polymer in solution. Polymers（ KYHPAM series） are dissolved in different types of saltwater or different concentrations of surfactant solutions. Then the solutions are percolated through varied dimension millpore inconstantpressure（ 0. 2 MPa）. The results showed that many factors such as salinity and concentrations of surfactant may bring different degrees of impact on the hydrodynamic radius of polymer in solution.