摘要
以十二烷基硫酸钠(SDS)为表面活性剂,利用氧化还原体系、采用前加碱共聚 共水解的方法制备了孪尾疏水缔合水溶性三元共聚物聚(丙烯酰胺/丙烯酸钠/N,N 二己基丙烯酰胺)[P(AM/NaAA/DiC6AM)],研究了P(AM/NaAA/DiC6AM)稀溶液及亚浓溶液的性能。随理论水解度的增加,P(AM/NaAA/DiC6AM)水溶液的特性粘数[η]增加,Huggins常数KH减小。P(AM/NaAA/DiC6AM)水溶液的表观粘度随理论水解度的增加而增加,随温度、剪切速率的增加而降低,随剪切速率的增加开始时降低较快而后变化较小。P(AM/NaAA/DiC6AM)在盐溶液中随NaCl、CaCl2质量浓度的增加,出现盐增粘现象;理论水解度不同的P(AM/NaAA/DiC6AM)与SDS水溶液的表观粘度在wSDS=0.050～0.400g/L范围内随SDS质量浓度的变化差别不大。
A series of twin-tailed hydrophobically associating water-soluble terpolymers Poly(acrylamide/sodium acrylate/N,N-dihexylacrylamide)\[P(AM/NaAA/DiC_6AM)\] was synthesized by the way of radical micellar copolymerization with sodium dodecyl sulfate as surfactant. The effects of the hydrolysis degree, temperature,shear rate, salinity and surfactant on the aqueous solution viscosity behaviours of these terpolymers were investigated in the dilute and semi-dilute aqueous solution. Intrinsic viscosity values\ of the terpolymer increased and Huggins constant K _H of the terpolymer decreased with the increase of hydrolysis degree. The aqueous solution apparent viscosity of the terpolymer decreased with decreasing hydrolysis degree of the polymer and with increasing temperature ,shear rate. The curves of apparent viscosity-shear rate were decreased sharply at early stage then evenly. It was observed that there appeared a viscosity enhancement phenomena with the increase of NaCl or CaCl_2 mass concentration in the saline solution of P(AM/NaAA/DiC_6AM). At all hydrolysis degree , the apparent viscosities of the mixed solution viscosity for terpolymers and SDS were very sensitive for the SDS mass concentration.
出处
《功能高分子学报》
CAS
CSCD
2004年第1期75-80,86,共7页
Journal of Functional Polymers
基金
中国石油化工股份有限公司十五重大科技攻关项目(P100043)
