Dispersion polymerization of anionic polyacrylamide in an aqueous salt medium

查看全文 作　　者：Lu Jiao Peng Bo Li Mingyuan Lin Meiqin Dong [1]Zhaoxia

机构地区：[1]Enhanced Oil Recovery Research Center, China University of Petroleum, Beijing 102249, China

出　　处：《Petroleum Science》索引2010年第7卷第3期,共6页

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. 关键词：阴离子聚丙烯酰胺盐水溶液分散聚合 HAAKE流变仪阴离子聚电解质聚丙烯酰胺乳液质量分数稳定剂

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Dispersion polymerization of anionic polyacrylamide in an aqueous salt medium

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