摘要
建立预交联凝胶颗粒对阴离子表面活性剂十二烷基硫酸钠(SDS)的吸附特性与SDS对预交联凝胶颗粒膨胀性影响规律的关系,利用稳态剪切流变和振荡剪切流变方法研究SDS对预交联凝胶颗粒流变性能的影响,探讨预交联凝胶颗粒与SDS的相互作用机制。结果表明:随着SDS质量浓度的增加,表面活性剂在预交联凝胶颗粒上的吸附量逐渐增加后达到饱和,而预交联凝胶颗粒的膨胀倍数先逐渐降低,达到吸附饱和后基本稳定;预交联凝胶颗粒具有剪切变稀性,吸附表面活性剂SDS之后对其在低剪切速率下的表观黏度具有显著影响,随着SDS质量浓度的增加其屈服应力逐渐减小,储能模量呈现先降低后升高的趋势。
The adsorption of anionic surfactant of sodium dodecyl sulfate （SDS） onto preformed particle gel （PPG） and the effects of SDS on the swelling ratio of PPG were combined. The effects of anionic surfactant sodium dodecyl sulfate on the rheology of preformed particle gel were also studied by using steady shear and oscillatory shear rheological experiments. The interaction mechanism of SDS and the rheology of preformed particle gel was discussed. The results show that the adsorption of SDS increases and the swelling ratio of PPG first decreases and then keeps stable with the increase of SDS. The preformed particle gel exhibits shear-thinning property and its viscosity is significantly influenced by SDS at lower shear rate. With the increase of SDS concentration, the yield stress of the preformed particle gel decreases and the storage modulus first decreases and then increases.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第2期153-157,共5页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家自然科学基金项目(21273286)
山东省'泰山学者'建设工程项目(20070704)
中国博士后科学基金项目(2012M511558)
长江学者和创新团队发展计划(IRT1294)
关键词
提高采收率
表面活性剂
预交联凝胶颗粒
十二烷基硫酸钠
吸附
表观黏度
储能模量
enhanced oil recorvery
surfactant
preformed particle gel
sodium dodecyl sulfate
adsorption
apparent viscostiy
storage modulus
