期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 42, 期 11, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.202100033
关键词
aggregation structures; polymer-surfactant composites; synergistic effects; viscoelasticity
资金
- National Natural Science Foundation of China [51774309]
- National Postdoctoral Program for Innovative Talents [BX20200386]
- Fundamental Research Funds for the Central Universities [20CX06093A]
By adding surfactant sodium dodecyl sulfate (SDS) to a hydrophobically associated water-soluble polymer solution, a composite with high viscoelasticity, strong shear thinning behavior, and good salt tolerance can be prepared. The viscosity of the composite reaches the maximum when the mass ratio of polymer to surfactant is 15:1, increasing hundredfold.
In order to prepare materials with controllable properties, changeable microstructure, and high viscoelasticity solution with low polymer and surfactant concentration, a composite is constituted by adding surfactant (sodium dodecyl sulfate, SDS) to hydrophobically associated water-soluble polymer (abbreviated as PAAC) solution. The viscoelasticity, aggregate microstructure, and interaction mechanism of the composite are investigated by rheometery, Cryo-transmission electron microscopy (Cryo-TEM), and fluorescence spectrum. The results show that when the mass ratio of polymer to surfactant is 15:1, the viscosity of the composite reaches the maximum. The viscosity of the composite system increases hundredfold. The viscosity plateau under dynamic shear is generated. The composite has the properties of high viscoelasticity, strong shear thinning behavior, and good salt tolerance, and temperature resistance. The maximum viscosity of the composite is shown at the salinity of 20000 mg L-1. In addition, there is no phase separation in the composite with the increase of polymer and surfactant concentration, which indicates the good stability of the system. It is proposed a method to obtain a high viscoelasticity solution by adding surfactants without wormlike micelles to a hydrophobically associated water-soluble polymer solution.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据