【摘要】 利用自由基胶束聚合法,由丙烯酰胺和甲基丙烯酸十八酯共聚合成了疏水缔合型水溶性聚合物。通过红外光谱表征了共聚物的结构,考察了共聚物浓度、盐浓度、剪切速率以及温度对共聚物溶液性能的影响。试验结果表明,聚合物质量分数大于临界缔合浓度(2%)时,溶液的粘度急剧增大;疏水缔合聚合物溶液的表观粘度随着溶液中NaCl质量分数的增加而增大。更多还原

【Abstract】 Acrylamide(AM)/Octadecyl methacrylate(OM) hydrophobically associating water-soluble copolymer were synthesized by free-radical micellar copolymerization.The copolymer structures were determined by FT-IR spectroscopy.The effects of copolymer concentration,salt concentration,rate of shear and temperature on the apparent viscosity of the copolymer have been studied.The results showed that the solution apparent viscosity increase sharply when the mass fraction of the copolymer was higher than critical associating concentration(2%).With an increasing of NaCl concentration,the copolymer solution apparent viscosity increased.更多还原