Petroleum Science >2010,??Issue 3:??410-415 DOI: https://doi.org/10.1007/s12182-010-0086-9
Dispersion polymerization of anionic polyacrylamide in an aqueous salt medium Open?Access
文章信息
作者：Lu Jiao,Peng Bo,Li Mingyuan,Lin Meiqin and Dong Zhaoxia
作者單位：
Enhanced Oil Recovery Research Center, China University of Petroleum, Beijing 102249, China;Enhanced Oil Recovery Research Center, China University of Petroleum, Beijing 102249, China;Enhanced Oil Recovery Research Center, China University of Petroleum, Beijing 102249, China;Enhanced Oil Recovery Research Center, China University of Petroleum, Beijing 102249, China;Enhanced Oil Recovery Research Center, China University of Petroleum, Beijing 102249, China
投稿時間：2009-11-18
引用方式：Lu, J., Peng, B., Li, M. et al. Pet. Sci. (2010) 7: 410. https://doi.org/10.1007/s12182-010-0086-9
文章摘要
Anionic polyacrylamide dispersions were prepared by dispersion polymerization in an aqueous salt medium, using acrylamide(AM) and acrylic acid(AA) as monomers and anionic polyelectrolytes as stabilizer. Effects of salt concentration, and molecular weight and concentration of stabilizers on the stability of the dispersions were investigated using a HAAKE rheometer and optical microscopy. The results showed that stable anionic polyacrylamide dispersions, consisting of smooth, spherical, polydisperse particles, could be obtained under the conditions of salt concentration ranging from 26 wt% to 30 wt%, concentration of stabilizers from 1.2 wt% to 1.8 wt%, and intrinsic viscosity of stabilizers from 2.98 dL?g-1 to 3.74 dL?g-1. The apparent viscosity of the stable dispersions changed very little with the shear rate, showing Newton fluid behavior.
關鍵詞
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Dispersion polymerization, aqueous salt medium, stability, micromorphology, apparent viscosity