摘要
通过渗流对比实验、原子力显微观察及电镜扫描等手段分析海博型两亲聚合物对O/W乳状液渗流影响机制。结果表明:由于两亲聚合物是接枝了疏水基团的特殊结构聚合物,当其浓度超过临界缔合浓度(wCAC)时能够形成空间性的、强黏弹性的超分子网络结构,这种结构在渗流过程中与分散相乳化油滴相互影响,增强体系的黏弹效应,使渗流阻力呈现'爬坡式'上升的不稳定特征;两亲聚合物浓度超过wCAC时,两亲聚合物相对分子质量增大使O/W乳状液体系的渗流阻力增大、渗流不稳定性增强。
The effect mechanism of amphiphilic polymer on the seepage of O / W emulsion system was evaluated using contrast flow,atomic force microscopy,and electron microscope scanning techniques. The results indicate that when the HAPM concentration is above the critical associating concentration( wCAC),the tridimensional and strong viscoelasticity supramolecular networks are formed through intermolecular hydrophobic association due to the special structure of amphiphilic polymer grafted with hydrophobic group. The viscoelasticity of the system is enhanced by the interaction of supramolecular networks and emulsified oil droplet,which shows unstable characteristics of ' crawling' for the flow resistance. It is also found that as the amphiphilic polymer molecular weight increases,the flow resistance of O / W emulsion system improves and becomes more fluctuant when the HAP concentration is above wCAC.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第1期140-145,共6页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家自然科学基金项目(20873181
21273286)
教育部博士点基金项目(20130133110005)
