Microstructure and swelling properties of large-sized cross-linked polymer microspheres

被引：0
作者：
Lin, Meiqin [1 ,2 ]
Guo, Jinru [1 ,2 ]
Xu, Fengqiang [1 ,2 ]
Hua, Zhao [1 ,2 ]
机构：
[1] Enhanced Oil Recovery Research Institute, China University of Petroleum, Beijing
[2] Key Laboratory of Enhanced Oil Recovery, CNPC, China University of Petroleum, Beijing
来源：
Lin, Meiqin | 1600年 / Science Press卷 / 30期
关键词：
Cross-linked polymer microspheres; Microstructure; Shearing; Size; Swelling;
D O I：
10.3969/j.issn.1001-8719.2014.04.015
中图分类号：
学科分类号：
摘要：
The microstructure and swelling properties of large-sized cross-linked polymer microspheres were investigated by scanning electron microscopy (SEM), microscope and laser diffracting measurements. The results demonstrated that the original shape of the microspheres was typically spherical with the diameter range of 200 nm to 20 μm. When the microspheres were dispersed in water, their size increased due to swelling, with the diameters in the range of 2 μm to 100 μm, and the volume of the swelled microspheres was almost 30-80 times larger than that of the microspheres without swelling, but the spherical conformation was remained. The size of microspheres reached its maximum value, when the microspheres dispersed in water for 2 h, and then was almost constant with the swelling time further prolonging. The size of microspheres was decreased in a small range with the increase of salt mass concentration in the dispersion system, and was increased with the rise of temperature. After high-rate sheared, the shape and size of microspheres changed insignificantly. Therefore, the microspheres have good resistance to high temperature, high salinity and shearing.
引用
收藏
页码：674 / 681
页数：7
相关论文
共 18 条
  • [1] Mack J.C., Smith J.E., In-depth colloidal dispersion gels improve oil recovery efficiency, pp. 527-539, (1994)
  • [2] Smith J.E., Mack J.C., The adon road-an in-depth gel case history, pp. 67-77, (1996)
  • [3] Chauveteau G., Tabary R., Renard M., Controlling gelation time and microgel size for water shutoff, pp. 1-8, (2000)
  • [4] Chauveteau G., Omari A., Bordeaux U., New size-controlled microgels for oil production, pp. 1-8, (2001)
  • [5] Lin M., Li M., Peng B., Et al., An experimental study of the properties of a polyacrylamide/aluminum citrate colloidal dispersion gel, 5, pp. 606-611, (1999)
  • [6] Lin M., Dong Z., Song J., Et al., The study of the critical crosslinking concentration for HPAM/AlCit system, 6, pp. 816-820, (2003)
  • [7] Li M.Y., Dong Z.X., Lin M.Q., Et al., A study on the size and conformation of linked polymer coils, Journal of Petroleum Science and Engineering, 41, 1-3, pp. 213-219, (2004)
  • [8] Lin M., Wang Z., Li M., Et al., Thermal stability of linked polymer solution, 24, 1, pp. 112-116, (2008)
  • [9] Lin M., Xin J., Li M., Et al., Study on the shear stability of low concentration HPAM/AlCit polymer system, 1, pp. 8-12, (2008)
  • [10] Lin M.Q., Li M.Y., Wang Z.J., Et al., A study of thermal stability of linked polymer solution, Journal of Dispersion Science and Technology, 30, 6, pp. 753-756, (2009)
12