摘要
研究了稀溶液中疏水链链长、无机电解质NaCl和CaCl2对疏水缔合水溶性丙烯酰胺/甲基丙烯酰氨乙基 二甲基烷基溴化铵/丙烯酸钠共聚物(AO)在水溶液中的特性粘数和Huggins常数的影响,以及聚合物AO 8的特性粘数和Huggins常数随温度的变化。结果表明:在稀溶液中,无机电解质离子强度增大,共聚物AO在NaCl和CaCl2溶液中的特性粘数减小,Huggins常数增大。在亚浓溶液范围对聚合物质量分数、温度、剪切速率及NaCl含量对聚合物的水溶液表观粘度的影响进行了研究,观察到疏水缔合聚合物盐水溶液在NaCl含量提高的情况下,出现的增粘现象。
The effects of hydrophobic chains length, inorganic electrolyte CaCl2 and NaCl on the intrinsic viscosity\ values and Huggins parameters KH of the watersoluble hydrophobically associating terpolymers (acrylamide/methylacrylaminoethyldimethylalkyl ammonium bromide/ sodium acrylate copolymer) are discussed. In addition, the changes of \ values and Huggins parameters KH of the polymer AO8 with the increase of temperature are also reported. The results indicate that in dilute aqueous solution, with the increase of ionic strengths of inorganic electrolyte, the intrinsic viscosity values of the hydrophobically associating terpolymers decrease, while Huggins parameters increase. Furthermore, in the range of semidilute aqueous solution, the effects of polymer mass fraction, temperature, shear rate and added electrolyte on apparent viscosities were studied. It is observed that there appeared viscosity enhancement phenomena with the increase of NaCl content in the saline solution of hydrophobically associating polymers.
出处
《功能高分子学报》
CAS
CSCD
2003年第3期387-391,共5页
Journal of Functional Polymers
