疏水缔合聚丙烯酰胺的合成及性能评价

Synthesis and Evaluation of Hydrophobically associating polyarylamide

摘要:

以丙烯酰胺(AM)、丙烯酸(AA)、甲丙烯酰氧乙基二甲基十六烷基溴化铵(C16DM)为单体合成了疏水缔合聚丙烯酰胺(HAPAM)。最佳的反应条件为：w(引发剂)=0.3%(以单体总质量计)， x(C16DM)=0.5%,x(AA)= 25%，w(总单体)=20%，pH=7~8，反应温度50℃，反应时间8h。采用元素分析和红外光谱对结构进行表征，同时研究表明，质量浓度1g/L时溶液表面张力可降至42.2mN/m，接近3g/L时出现临界缔合浓度；黏度随温度上升缓慢下降，溶液具有剪切稀释性。

Abstract:

A hydrophobically associating polyacrylamide was synthesized using AM,AA,C16DM as monomers.The suitable reaction conditions were :w(initiator)=0.3%(based on the total monomers), x(C16DM)=0.5%,x(AA)= 25%，w(total monomers)=20%,pH7~8,reaction temperature 50℃,reaction time 8h,respectively.The structure was characterized by means of elemental analysis and infrared spectrum.At the same time,the results show that,the surface tension of the solution could be reduced to 42.2mN/m,when the mass concentration was 1g/L.The critical associating concentration appeared when the mass concentration was close to 3g/L.The viscosity declined slowly with temperature rose,and the solution had shear thinning.