An Advanced Material with Synergistic Viscoelasticity Enhancement of Hydrophobically Associated Water‐Soluble Polymer and Surfactant. Issue 11 (27th April 2021)

• Record Type: Journal Article
• Authors: Wang, Tongyu; Kang, Wanli; Yang, Hongbin; Li, Zhe; Zhu, Tongyu; Sarsenbekuly, Bauyrzhan; Gabdullin, Maratbek
• Is Part Of: Macromolecular rapid communications. Volume 42:Issue 11(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-04-27
• Subjects: aggregation structures -- polymer‐surfactant composites -- synergistic effects -- viscoelasticity; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.202100033
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract: 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. Abstract : A surfactant‐polymer composite is prepared by using hydrophobically association water‐soluble polymer and widely available commodity surfactant (sodium dodecyl sulfate). The composite has the advantages of low dosage, high viscoelasticity, good salt tolerance and temperature resistance, controllable properties. The obtained composite aqueous system may be useful and an inexpensive alternative for different applications.