孪尾疏水缔合水溶性共聚物聚(丙烯酰胺/丙烯酸钠/N,N-二己基丙烯酰胺)/十二烷基硫酸钠水溶液的粘度行为

水溶性三元共聚物;孪尾疏水缔合水溶性共聚物聚(丙烯酰胺/丙烯酸钠/N;N-二己基丙烯酰胺)/十二烷基硫酸钠水溶液的粘度行为

Aqueous Solution Viscosity of Hydrophobically Associating Twin-Tailed Acrylamido Terpolymers

A series of hydrophobically associating twin-tailed water-soluble terpolymers poly(acrylamide/sodium acrylate/dihexylacrylamide) P(AM/NaAA/DiC_6AM)] were synthesized by radical micellar copolymerization. Their apparent viscosities were found to be increased and their critical associating concentrations decreased dramatically in the presence of sodium dodecyl sulfate (SDS). The effects of the surfactant to hydrophobic monomer molar ration(SDS)/n (hydrophobic monomer)], the hydrophobic momomer content, temperature and shear rate on aqueous solution viscosity of the unpurified terpolymers have been investigated. The apparent viscosities of the unpurified terpolymers were decreased with the increase in n(SDS)/n(hydrophobic monomer), temperature and shear rate; but increased firstly and then decreased with increase in the hydrophobic momomer content. The terpolymers showed a superior dissolution property when the hydrophobic momomer contents are from 0.125% to 0.375%, n(SDS)/n(hydrophobic monomer)are from 10% to 20%