孪尾疏水缔合丙烯酰胺/丙烯酸钠/N，N-二正丁基丙烯酰胺共聚物水溶液的粘度行为  

AQUEOUS SOLUTION VISCOSITY BEHAVIOR OF TWIN-TAILED HYDROPHOBICALLY ASSOCIATING TERPOLYMER POLY(ACRYLAMIDE/SODIUM ACRYLATE/DI-n-BUTYLACRYLAMIDE)

作　　者：耿同谋[1] 吴文辉[2] 

机构地区：[1]重庆师范大学化学学院,重庆400047 [2]北京理工大学材料科学与工程学院,北京100081

出　　处：《精细石油化工》2005年第4期38-43,共6页Speciality Petrochemicals

基　　金：中国石油化工集团公司十五重大科技攻关项目(P100043)。

摘　　要：采用先加碱共聚-共水解法合成了孪尾疏水缔合性丙烯酰胺/丙烯酸钠/N,N-二正丁基丙烯酰胺共聚物[P(AM/NaAA/DiC_4AM)]。当x(疏水单元)=0.2%～5.0%时,P(AM/NaAA/DiC_4AM)在1 mol/L NaNO_3溶液中的特性粘数[η]为1.720～0.330 L/g、Huggins常数值为0.375～3.894。P(AM/NaAA/DiC_4AM)在矿化度为19.334 mg/g盐水溶液中的表观粘度随疏水单体用量的增加而增加,随温度、剪切速率的增加而降低；在离子强度为2.26～4.88 mmol/kg的NaCl水溶液和离子强度为0.21～0.528 mmol/kg的CaCl_2水溶液中,P(AM/NaAA/DiC_4AM)水溶液出现盐增粘现象,且疏水单体用量越高,盐增粘效应越显著。当p (十二烷基硫酸钠)=0～0.7 g/L,p(溴化十六烷基三甲基铵)=0～0.014 g/L时,对P(AM/NaAA/DiC_4AM)水溶液的表观粘度没有明显影响。A series of twin-tailed hydrophobically associating water-soluble terpolymers poly (acrylamide/sodium acrylate/di-n-butylacrylamide)[P(AM/NaAA/DiC_4 AM)]were synthesized first by micellar copolymerization and then by co-hydrolysis with alkali.When x(hydrophobic unit)= 0.2%-5.0%,the intrinsic viscosities[η]of the terpolymers are 1.720-0.330 L/g and the Huggins constants K_H of the terpolymers are 0.375-3.894 in 1 mol/L NaNO_3 solution.In 19.334 mg/g saline solution,the apparent viscosity of the terpolymer increased with the hydrophobic contents increasing and decreased,with the temperature and the shear rate increasing.It was observed that there are vis- cosity enhancing effects in the saline solution of hydrophobically associating terpolymers,while the i- onic strength of NaCl and CaCl_2 are 2.3-4.88 mmol/kg and 0.21-0.528 mmol/kg respectively,and the more the hydrophobic content exists,the stronger would be the viscosity enhancing effect.But there are no viscosity enhancing phenomena,whenρ(SDS)=0-0.70 g/L orρ(CTAB)=0-0.014 g/L.

关 键 词：孪尾 胶束聚合共水解法 疏水缔合 粘度行为 

分 类 号：TQ314.2[化学工程—高聚物工业] O631.4[理学—高分子化学]