Cationic-anionic surfactant mixed system gel and preparation method thereof

A surfactant, anion and cation technology, applied in the field of anionic and cationic surfactant mixed system gel and its preparation, can solve the problem of few reports of fluorocarbon surfactant gel, achieve novel structure, high stability, The effect of enriching the field of study
CN104549077AActive Publication Date: 2015-04-29CHINA UNIV OF PETROLEUM (BEIJING)
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA UNIV OF PETROLEUM (BEIJING)
Publication Date
2015-04-29

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Abstract

The invention provides cationic-anionic surfactant mixed system gel and a preparation method thereof. The preparation method for the gel comprises the following steps: exchanging a halide ion in a cationic hydrocarbon surfactant solution into a hydroxyl ion through an anionic exchanger to obtain a solution A, and calibrating concentration of the solution A through a standard HCl solution; adding an anionic fluorocarbon fatty acid surfactant and the solution A into tri-distilled water, wherein the sum of concentration of anionic fluorocarbon fatty acid surfactant and solute in the solution A is 0.050-0.130mol.L<-1>, and a molar ratio of the anionic fluorocarbon fatty acid surfactant to the solute in the solution A is (8:2)-(1:1); heating until the hydrocarbon surfactant is completely dissolved, and reacting for 30-60 minutes; cooling the solution to the room temperature and keeping the temperature for 4-8 weeks at 25-50 DEG C after centrifuging and removing foams, so as to obtain the gel. The gel has high elasticity modulus and high viscous modulus, the elasticity is far higher than the viscidity, the gel is formed by closely packing polyhedral vesicles and novel in structure.
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Description

technical field

[0001] The invention belongs to the field of surfactant aggregates, and in particular relates to an anion-cation surfactant mixed system gel and a preparation method thereof. Background technique

[0002] Gels have both solid and liquid properties, and have important and extensive applications in the fields of petroleum industry, material science, and biomedicine. Surfactants can form various aggregate structures in solution, such as micelles, planar layered structures, vesicles, liquid crystals, etc., and these aggregate structures can be further assembled to form multi-dimensional, multi-level, multifunctional supramolecular structures , some of which are called surfactant gels due to their extremely high viscoelasticity. In recent years, the study of surfactant gels has been a hot spot in the field of colloid and interface science.

[0003] At present, the surfactant gel system has shown excellent characteristics and application value in the fields of dr...

Claims

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