疏水缔合聚丙烯酰胺与黏弹性表面活性剂的相互作用

发布时间：2018-01-14 21:25

本文关键词：疏水缔合聚丙烯酰胺与黏弹性表面活性剂的相互作用　出处：《石油化工》2017年02期 　论文类型：期刊论文

【摘要】：借助黏度法、表面张力法、荧光光谱法研究了疏水缔合聚丙烯酰胺AP-P5与黏弹性表面活性剂VES的相互作用。实验结果表明,AP-P5与VES存在显著的相互作用,对AP-P5-VES二元体系的表观黏度、表面张力影响较大。随VES质量浓度的增大,二元体系的表观黏度快速升高后急剧降低再稳步升高。当VES的质量浓度达到一定值时,二元体系的表观黏度开始高于单一聚合物的表观黏度。与单独的表面活性剂溶液相比,随VES质量浓度的增大,AP-P5-VES二元体系的表面张力先低后高,最后趋于一致。VES与AP-P5的相互作用机理与表面活性剂的自组装形态密切相关。当表面活性剂以单分子形态或球状胶束存在时,它与聚合物的疏水基团形成混合胶束;当表面活性剂以棒状胶束形态存在时,它与聚合物缔合形成混合的超分子网络结构。
[Abstract]:The interaction between hydrophobically associating polyacrylamide (AP-P5) and viscoelastic surfactant (VES) was studied by means of viscosity, surface tension and fluorescence spectroscopy. There is a significant interaction between AP-P5 and VES, which has a great effect on the apparent viscosity and surface tension of AP-P5-VES binary system, and increases with the mass concentration of VES. When the mass concentration of VES reaches a certain value, the apparent viscosity of binary system decreases rapidly and then increases steadily. The apparent viscosity of binary system began to be higher than that of single polymer. Compared with the single surfactant solution, the apparent viscosity of binary system increased with the increase of VES concentration. The surface tension of AP-P5-VES binary system is first low and then high. Finally, the mechanism of the interaction between .ves and AP-P5 is closely related to the self-assembled form of surfactants, when the surfactants exist as monomolecular or spherical micelles. It forms a mixed micelle with the hydrophobic group of the polymer; When the surfactant exists as a rod micelle, it is associated with the polymer to form a mixed supramolecular network structure.
【作者单位】：中国石化三采用表面活性剂重点实验室上海石油化工研究院;
【基金】：国家自然科学基金项目(91434104)
【分类号】：TE39
【正文快照】： ·228·2017年第46卷PETROCHEMICAL TECHNOLOGY疏水缔合水溶性聚合物是一类重要的水溶性高分子材料[1],具有典型的两亲性结构,由亲水主链和疏水基团构成,其中,疏水基团的含量一般小于2%(x)。在一定浓度下,疏水缔合聚合物在水溶液中发生分子间缔合形成超分子网络结构。因此,疏

【相似文献】