采用自由基水溶液共聚法制备了水溶性丙烯酰胺--2-甲基丙烯酰基-氧乙基-二甲基-十二烷基溴化铵共聚物(AM/MEDMDA).研究了在链结构中引入不同疏水基团含量的共聚物的溶液性能,该共聚物在0.256 mol/L NaCl溶液中表观粘度较之水溶液有较大提高,表现出明显的抗盐性能;在剪切作用下,其粘度急剧下降,呈现假塑性流体行为;当剪切作用回复时,粘度回升.对共聚物溶液的粘-温性能,共聚物/表面活性剂体系的溶液性能也进行了研究.对共聚物稀溶液性质的研究反映了共聚物中离子基团和疏水基团对其分子形态的影响.
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