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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

Active Publication Date: 2015-04-29
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the gel formation of fluorocarbon surfactants

Method used

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  • Cationic-anionic surfactant mixed system gel and preparation method thereof
  • Cationic-anionic surfactant mixed system gel and preparation method thereof
  • Cationic-anionic surfactant mixed system gel and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] This embodiment prepares a kind of anion-cation surfactant mixed system gel, and concrete steps are:

[0032] The tetradecyltrimethylammonium chloride solution of the cationic hydrocarbon surfactant is passed through the anion exchange resin CG-400 to replace the chloride ions with hydroxide ions to obtain the tetradecyltrimethylammonium hydroxide solution, and use Standard HCl solution was used to calibrate its concentration, and then prepared to a concentration of 0.100mol L -1 The solution.

[0033] Weigh 0.1542g perfluorodecanoic acid (anionic fluorocarbon fatty acid surfactant), measure 2.0mL of 0.100mol L -1 Tetradecyltrimethylammonium hydroxide solution, adding triple distilled water to prepare the total concentration of the two surfactants is 0.100mol L -1 And the solution with a concentration ratio of 6:4 was heated to 60°C and slowly stirred until the perfluorodecanoic acid was completely dissolved, and reacted for 60 minutes.

[0034] Naturally cool the so...

Embodiment 2

[0038] This embodiment prepares a kind of anion-cation surfactant mixed system gel, and concrete steps are:

[0039] The tetradecyltrimethylammonium chloride solution of the cationic hydrocarbon surfactant is passed through the anion exchange resin CG-400 to replace the chloride ions with hydroxide ions to obtain the tetradecyltrimethylammonium hydroxide solution, and use Standard HCl solution was used to calibrate its concentration, and then prepared to a concentration of 0.100mol L -1 The solution.

[0040] Weigh 0.2255g perfluoroundecanoic acid (anionic fluorocarbon fatty acid surfactant), measure 0.100mol L of 1.00mL -1 Tetradecyltrimethylammonium hydroxide solution, adding triple distilled water to prepare the total concentration of the two surfactants is 0.100mol L -1And the solution with a concentration ratio of 8:2 was heated to 80°C and slowly stirred until the perfluoroundecanoic acid was completely dissolved, and reacted for 60 minutes.

[0041] Then the solution...

Embodiment 3

[0045] This embodiment prepares a kind of anion-cation surfactant mixed system gel, and concrete steps are:

[0046] The cationic hydrocarbon surfactant cetyltrimethylammonium chloride solution is passed through the anion exchange resin CG-400 hydroxide ion to replace the chloride ion to obtain the cetyltrimethylammonium hydroxide solution, and the standard HCl solution was used to calibrate its concentration, and then prepared to a concentration of 0.100mol L -1 The solution.

[0047] Weigh 0.1965g perfluorododecanoic acid (anionic fluorocarbon fatty acid surfactant), measure 1.80mL of 100mmol L -1 cetyltrimethylammonium hydroxide solution, adding triple distilled water to prepare the total concentration of the two surfactants is 0.100mol L -1 And the solution with a concentration ratio of 6.4:3.6 was heated to 80°C and stirred slowly until the perfluorododecanoic acid was completely dissolved, and reacted for 60 minutes.

[0048] Then the solution was naturally cooled to ...

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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.

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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Application Information

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IPC IPC(8): B01J13/00C09K8/62
CPCB01J13/0065C09K8/602C09K8/70C09K2208/30
Inventor 张娟林梅钦董朝霞
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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