The Study of a Novel Nanoparticle-Enhanced Wormlike Micellar System

Nanoscale Research Letters

Yining Wu¹  Yuyang Li¹  Caili Dai¹  Mingwei Gao¹  Xinke Wang¹  Mingwei Zhao¹  Yue Zhang¹  Wenjiao Lv¹ 

[1] School of Petroleum Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China);

关键词: Silica nanoparticle;    Nanoparticles enhanced;    Rheological properties;    Contour length;   

DOI  :  10.1186/s11671-017-2198-2

来源: DOAJ

【 摘 要 】

Abstract In this work, a novel nanoparticle-enhanced wormlike micellar system (NEWMS) was proposed based on the typical wormlike micelles composed of cetyltrimethylammonium bromide (CTAB) and sodium salicylate (NaSal). In order to strengthen the structure of wormlike micelles, silica nanoparticles are used to design the novel nanoparticle-enhanced wormlike micelle. The stability and morphologies of silica nanoparticles were studied by dynamic light scattering (DLS) and transmission electron microscopy (TEM) at first. After the formation of NEWMS, the rheological properties were discussed in detail. The zero-shear viscosity of NEWMS increases with the addition of silica nanoparticles. Dynamic oscillatory measurements show the viscoelastic properties of NEWMS. Through comparison with the original wormlike micelles, the entanglement length and mesh size of NEWMS are nearly unchanged, while the contour length increases with the increase of silica concentration. These phenomena confirm the enhanced influence of silica nanoparticles on wormlike micelles. The formation mechanism of NEWMS, especially the interactions between wormlike micelles and nanoparticles, is proposed. This work can deepen the understanding of the novel NEWMS and widen their applications.

【 授权许可】

Unknown