【作者】 张熙； 张晓飞； 彭达平； 代华；

【Author】 Zhang Xi,Zhang Xiaofei,Pen Daping,Dai Hua (The State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute, Sichuan University,Cheng du,610065,China)

【机构】 四川大学高分子研究所高分子材料工程国家重点实验室；

【摘要】 <正>水溶性聚合物在石油开采、水处理、纺织、造纸、选矿、涂料粘合剂等领域具有重要的应用价值。在水溶性聚合物中,具有强增粘性的聚合物通常是高分子量的聚电解质。在温度升高或有无机盐存在时,该类聚合物溶液粘度会显著降低,不能满足高温与高含盐条件下的应用要求。为了制备出具有升温增粘与盐增粘性能的水溶性聚合物,合成出了集聚醚结构和更多还原

【Abstract】 In this paper,the thermo-sensitive monomer with bifunctional group（Ma） and unsaturated monomer with alkyl poly（ethylene oxide） group（NPA） were synthesized,and the thermo-sensitive water-soluble copolymers P（AM-Ma）,P（AM-NIPAM-Ma） and P（AM-NIPAM-NPA） were prepared by free radical aqueous solution copolymerization.The properties of the polymers mentioned above were studied.The solution properties of P（AM-Ma）,P（AM-NIPAM-Ma） and P（AM-NIPAM-NPA） are strongly dependent on polymer structure,temperature and the quantity or sort of the inorganic salts.The P（AM-Ma） solution,the apparent viscosity of which increases with the increase of temperature,shows perfect salt-thickening effect.In the three salts,NaCl、CaCl₂ and Na₂SO₄, Na₂SO₄ is of the best salt-thickening effect.For P（AM-NIPAM-Ma） aqueous solution,the apparent viscosity decreased with the increase of temperature.In contrast with P（AM-Ma） and P（AM-NIPAM-Ma）,the apparent viscosity of P（AM-NIPAM-NPA） aqueous are hardly changed when temperature is below 70℃.更多还原