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Sulphonate Gemini surfactant and preparation method thereof

A surfactant, gemini surface technology, applied in chemical instruments and methods, dissolution, chemical/physical processes, etc., can solve the problem of limited types of gemini surfactants, not many, etc., to achieve good slime peeling characteristics, easy to operate , excellent surface activity

Inactive Publication Date: 2009-07-15
QIQIHAR UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, there are not many related achievements in China at present, and the types of gemini surfactants developed are relatively limited.

Method used

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  • Sulphonate Gemini surfactant and preparation method thereof
  • Sulphonate Gemini surfactant and preparation method thereof
  • Sulphonate Gemini surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Further illustrate the present invention below by EM-12 synthesis example

[0032] 1. Ring-opening reaction of maleic anhydride

[0033] At room temperature, use argon to exhaust the air in a dry 250mL three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, add 5mL of acetone as a solvent, first add 37.5g of maleic anhydride, and then dropwise add ethylenediamine 15.6 mL, the molar ratio of the amount used is 2.5:1, and then the catalyst BF is added dropwise 3 -Ether solution (w=47%) 2mL, heated and stirred to reflux under the protection of argon, reacted for 18h, washed the crude product with acetone for 3-5 times, filtered with suction, and dried in vacuum at 60°C to obtain light yellow intermediate I Ethylamine bis(acyl-acrylic acid) powder 35.9g, yield rate is 87.75%;

[0034] 2. Addition reaction

[0035] In a dry 250mL three-necked flask equipped with a stirrer, a thermometer, and a reflux condenser, add 10g of intermediate I, dropwis...

Embodiment 2

[0039] Surface Activity Determination of EM Series Surfactants

[0040] The surface tension of the product solution under different concentrations is measured by the suspension ring method, and the surface tension of the EM-12 aqueous solution is changed with the concentration curve, see Figure 4 . The critical micelle concentration value (cmc) and the surface tension (γ cmc ). Experiments have found that the critical micelle concentration of EM series surfactants and the surface tension at the critical micelle concentration are low. For example, the critical micelle concentration of EM-12 is 0.42mmol / L, and the surface tension at the critical micelle concentration is 28.8 mN / m.

Embodiment 3

[0042] Infrared spectrum of intermediate products and target products EM series surfactants

[0043] The infrared spectrum of the intermediate obtained by example 1, see figure 1 , 2 ; Infrared spectrum of EM-12 surfactant see image 3 , from the spectrum analysis we know:

[0044] figure 1 , intermediate product I: 3294.26cm -1 It is the stretching vibration peak of N-H; 3065.47cm -1 It is the stretching vibration peak of C-H; 2850.21cm -1 for -CH 2 The antisymmetric and symmetric stretching vibration peaks of -; 1697.21cm-1 is the -C=O stretching vibration peak in α, β unsaturated acids; 1629.68cm-1 It is -N-C=O stretching vibration peak; 1582.36cm -1 It is the bending vibration peak of secondary amine; 715.19cm -1 for -CH 2 stretching vibration peak.

[0045] figure 2 , intermediate product II: 3466.93cm -1 It is the stretching vibration peak of N-H; 2919.07 and 2851.07cm -1 for -CH 2 The antisymmetric and symmetric stretching vibration peaks of ; 1706.35cm ...

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Abstract

The invention discloses a sulphonate gemini surfactant and a preparing method thereof. The sulphonate gemini surfactant is named as diethylamine bi-(acyl-methyl alcohol ester-alpha-sodium solphonate), the sulphonate surfactant takes maleic anhydride as a raw material, and the specific synthesis method comprises three steps of ring cleavage reaction, addition reaction and esterification reaction of the maleic anhydride. The invention has the advantages that a disulphonate diester type surfactant has higher surface activity and better emulsibility, wettability and dispersion property, and the surfactant has better loam stripped property; target products have excellent surface activity, the critical micelle concentration of the target products is 0.42 mmol / L which is 1 / 23 of dodecyl sodium sulfate (9.8mmol / L), and the surface tension of the target products under the critical micelle concentration is 28.8mN / m which is 10.2mN / m lower than the dodecyl sodium sulfate (39.0mN / m); and the surfactant can be applied to daily chemicla such as washing agents, solubilizing agents, emulsifying agents, and the like and can also be used for water treatment of oil fields.

Description

technical field [0001] The present invention relates to a kind of gemini surfactant, relate to a kind of sulfonate gemini surfactant more specifically, the present invention also relates to a kind of preparation method of this sulfonate gemini surfactant. Background technique: [0002] Gemini surfactants are new members in the field of surfactant technology. Its structural feature is that the molecule contains at least two hydrophilic groups and two hydrophobic groups, and two amphiphiles are bonded by a spacer through a chemical bond. compound formed. On the one hand, this structure can enhance the hydrophobic effect of hydrocarbon chains, increasing the tendency of hydrophobic groups to escape from water; Its arrangement on the interface is more compact, thereby increasing the surface activity of this type of surfactant. [0003] As early as 1971, people synthesized gemini surfactants for the first time. After research, it was found that such compounds had better surface...

Claims

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Application Information

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IPC IPC(8): B01F17/04C09K23/04
Inventor 徐群李珊珊王丽艳
Owner QIQIHAR UNIVERSITY
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