【作者】 韩秀贞； 林梅钦； 李明远； 吴肇亮；

【Author】 Han Xiu-zhen, Lin Mei-qin, Li Ming-yuan, Wu Zhao-liang (Enhanced Oil Recovery Research Center, China University of Petroleum, Beijing 102249, China)

【机构】 中国石油大学(北京)提高采收率中心；

【摘要】 应用动态光散射(DLS)原理,采用高灵敏度纳米粒度分析仪,对交联聚合物纳米颗粒水化粒径进行了研究．结果表明,纳米颗粒的平均流体力学直径随着溶液中盐浓度的提高而减小．随着水化时间的增加而增大,达到一定水化平衡时,粒径不再继续增加．实验进一步采用扫描电镜(SEM)研究了盐浓度对于粒径分布的影响,与DLS结果相似．更多还原

【Abstract】 The sizes of linked polymer nanoparticles are investigated by using dynamic light scattering (DLS). The results show that under the same experimental condition, when the concentration of NaCl is getting raised in the reaction, the diameter (Dh) of the nanoparticles becomes smaller. Moreover the longer the hydration time, the larger the hydrodynamic A, of the nanoparticles, there is no more increase when hydrodynamic condition is balanced. The influence of salt concentration on the dimension of the nanoparticles is also studied by SEM.更多还原