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A kind of foam system of carboxylate type anionic gemini surfactant

A technology of surfactant and foam system, applied in the field of foam system, can solve the problems of many impurities in foam stabilization, difficult to distinguish quality, general foam stabilization effect, etc., and achieve the effect of strengthening half-life, improving foam stability, and strengthening strength

Active Publication Date: 2019-10-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the foam stabilizing effect is average, and the products of lauryl dimethyl amine oxide and alkanolamide are varied, the quality is difficult to distinguish, and there are many by-products and impurities that are not conducive to foam stabilization

Method used

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  • A kind of foam system of carboxylate type anionic gemini surfactant
  • A kind of foam system of carboxylate type anionic gemini surfactant
  • A kind of foam system of carboxylate type anionic gemini surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the preparation of carboxylate type anionic Gemini surfactant

[0026] Synthesis of diethyl 2-decylmalonate from diethyl malonate and n-bromodecane as starting materials, and bilateral substitution between diethyl 2-decylmalonate and 1,3-dibromopropane Reaction, generate tetraethyl tetracosane-11,11,15,15-tetracarboxylic acid tetraethyl ester, tetraethyl tetracosane-11,11,15,15-tetracarboxylic acid tetraethyl ester The final carboxylate-type anionic Gemini surfactant is obtained through saponification, acidification, deacidification and acid-base neutralization in sequence.

Embodiment 2

[0027] Embodiment 2: the preparation of xylitol foam system

[0028] Firstly, 30 ml of mother solution of 2 mM carboxylate anionic Gemini surfactant was prepared, and ammonia water was added thereto to pH=12. Get 10ml and place it in a stoppered measuring cylinder as a contrast, another container and add 0.1g of xylitol to it, and add the mother liquor of carboxylate anionic Gemini surfactant to 10ml, disperse evenly until fully dissolved, and Transfer the solution to a stoppered measuring cylinder. After repeated oscillations, each experiment should be consistent in terms of oscillation speed, oscillation times, oscillation direction and oscillation time. After the oscillation is terminated, the volume of the bubbles generated by the solution is used as the foaming performance. For the measurement, record the initial foam volume of the foam from the moment the shaking was stopped. Then put the solution into the constant temperature equipment, and record the volume of the foa...

Embodiment 3

[0029] Embodiment 3: the preparation of glucose foam system

[0030] Firstly, 30 ml of mother solution of 2 mM carboxylate anionic Gemini surfactant was prepared, and ammonia water was added thereto to pH=12. Get 10ml and place it in a stoppered measuring cylinder as a contrast, and add 0.1g of glucose to another container, and add the mother liquor of carboxylate anionic Gemini surfactant to 10ml, disperse evenly until fully dissolved, and mix the The solution is transferred to a stoppered measuring cylinder. After repeated oscillations, each experiment should be consistent in the oscillation speed, oscillation times, oscillation direction and oscillation time. After the oscillation is terminated, the volume of the bubbles generated by the solution is used as the measure of the foaming performance. , and record the initial foam volume of the foam from the moment the shaking was stopped. Then put the solution into the constant temperature equipment, and record the volume of t...

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Abstract

The invention discloses a foam system of a carboxylate-type anionic Gemini surfactant, belonging to the technical field of surfactants. In the present invention, xylitol is compounded with a gemini surfactant containing carboxyl groups. Xylitol contains five hydroxyl groups and carboxyl groups to form hydrogen bonds. The weak interaction force strengthens the strength of the foam film and obviously improves the foam stability. , to obtain a foam with good stability, the results show that when xylitol is compounded with carboxylate type gemini surfactants, the half-life of the foam system is 1350min, which is 75 times the foam stability of using gemini surfactants alone. In the compounding range of xylose and gemini surfactant, the foam stability obtained is good.

Description

technical field [0001] The invention relates to a foam system of a carboxylate-type anionic Gemini surfactant, belonging to the technical field of surfactants. Background technique [0002] Gemini surfactants, also known as Gemini surfactants, Gemini surfactants, Gemini surfactants or coupled surfactants, are two traditional surfactant molecules in their hydrophilic head groups or close to them through a linking group. A new type of surfactant formed by linking hydrophilic head groups together. Due to the particularity of its structure, gemini surfactants exhibit many unique properties that conventional surfactants do not possess, so they have strong application potential. Gemini surfactant has good solubilization, wetting, foaming and saponification dispersing abilities, and can be widely used in various fields. In addition, in some special fields, it can be used as a template for preparing nanomaterials And anti-adhesive, treatment of sewage and soil, sterilization and d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/00C09K8/035C09K8/518C09K8/60C09K8/70B03D1/02B03D1/008C09K23/00
CPCC09K8/035C09K8/518C09K8/602C09K8/703B03D1/008B03D1/02B03D2201/04C09K23/00
Inventor 裴晓梅李朝旺宋冰蕾李文楷崔正刚
Owner JIANGNAN UNIV