Cation fluoride Gemini surface activator

A surfactant, cnf2n technology, applied in dissolution, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of surface activity and other unsatisfactory properties, and achieve low critical micelle concentration and good dispersibility Effect

Inactive Publication Date: 2006-08-16
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the oil-soluble groups of the existing Gemini surfactants are mostly c...

Method used

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  • Cation fluoride Gemini surface activator
  • Cation fluoride Gemini surface activator
  • Cation fluoride Gemini surface activator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Synthesis of Surfactant (I):

[0024]

[0025] 1. Synthesis of perfluorosulfonamide:

[0026] Add 100ml of toluene and 0.01mol of perfluorooctane sulfonic acid [the compound represented by formula (2) in a three-necked flask, where R 3 =C n F 2n+1 SO 2 , N=8], then slowly drop 0.02mol of amine [the compound represented by formula (3), where m=2, R 1 , R 2 Both are CH 3 ] Reflux for 12 hours at 110℃~120℃. After the reaction, the toluene was evaporated to dryness to obtain a crude product, which was recrystallized to obtain perfluorosulfonamide.

[0027] 2. Synthesis of Gemini Surfactant:

[0028] Add the previously prepared 0.01mol perfluorosulfonamide (prepared in step 1) and 50ml diethyl ether into a three-necked flask, then add 0.02mol 4,4'-dichloromethylbiphenyl, reflux and react for 48 hours to obtain a white solid It is a surfactant product.

[0029] 1 H NMR(DMSO-d 6 )δ(ppm): 1.91(s, 2H), 3.09(t, J=7.2Hz, 4H), 3.32(s, 12H), 3.50(t, J=5.7Hz, 4H), 4.49(s, 4H) , 7.12 (d...

Embodiment 2

[0031] Synthesis of Surfactant (II):

[0032]

[0033] 1. Synthesis of perfluorosulfonamide:

[0034] Add 100ml of toluene and 0.01mol of perfluorooctane sulfonic acid [the compound represented by formula (2) in a three-necked flask, where R 3 =C n F 2n+1 SO 2 , N=6], then slowly add 0.02mol of amine [the compound represented by formula (3), where m=4, R 1 , R 2 All -C 2 H 5 ], the reaction was refluxed at 110℃~120℃ for 12 hours. After the reaction, the toluene was evaporated to dryness to obtain a crude product, which was recrystallized to obtain perfluorosulfonamide.

[0035] 2. Synthesis of Gemini Surfactant:

[0036] Add 0.01mol of perfluorosulfonamide prepared in step 1 and 50ml of ether into a three-necked flask, then add 0.02mol of 4,4'-dichloromethylbiphenyl, and react under reflux for 48 hours. The white solid obtained is surface active.剂产品。 Agent products.

[0037] 1 H NMR(DMSO-d 6 )δ(ppm): 0.89(t, J=7.8Hz, 12H), 1.41~1.47(m, 4H), 1.77(m, 4H), 1.81(s, 2H), 2.65(t, 4H),...

Embodiment 3

[0040] Synthesis of Surfactant (III):

[0041]

[0042] 1. Synthesis of perfluorooctamide:

[0043] Add 100ml of toluene and 0.01mol of perfluorooctanoic acid [the compound represented by formula (2) in a three-necked flask, where R 3 =C nF 2n+1 CO, n=7], then slowly add 0.02mol of amine [the compound represented by formula (3), where m=4, R 1 , R 2 All -CH 3 ], reflux for 12 hours at 110°C to 120°C. After the reaction, the toluene was evaporated to dryness to obtain a crude product, which was recrystallized to obtain perfluorooctylamide.

[0044] 2. Synthesis of Gemini Surfactant:

[0045] In a three-necked flask, 0.01 mol of perfluorooctamide and 50 ml of ethyl ether were added, and then 0.02 mol of 4,4'-dibromomethyl biphenyl was added, and the reaction was refluxed for 48 hours. The white solid obtained was the surfactant product.

[0046] 1 H NMR(DMSO-d 6 )δ(ppm): 1.47~1.53(m,4H), 1.70~1.79(m,4H), 3.20(m,4H), 3.26(t,J=5.7Hz,4H), 3.41(s,12H), 4.51 (s, 4H), 7.11 (d, J=8.5 Hz,...

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Abstract

A cationic fluoric surfactant Gemini and its chemical structure are disclosed. Its advantages are lower critical micell concentration, less consumption, and high dispersity, foam stability, penetrability and wettability.

Description

Technical field [0001] The invention relates to a cationic Gemini surfactant, in particular to a cationic fluorine-containing Gemini surfactant. Background technique [0002] Different from the molecular structure of traditional surfactants, Gemini surfactant molecules contain at least two hydrophilic groups and two hydrophobic groups, and the hydrophilic groups are connected by spacer groups. From the molecular structure of Gemini surfactant, it can be known that the surfactant not only enhances the hydrophobic effect of the hydrocarbon chain, but also adjusts the distance of the hydrophilic group through Spacer, changes the geometric shape of the unit molecule, and makes the micelle surface charge density. , The degree of hydration and changes in the shape of micelles give it certain characteristics. Compared with traditional surfactants, Gemini surfactants have the following characteristics: [0003] (1) It has a fairly low CMC value; [0004] (2) Gemini surfactants are easier...

Claims

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Application Information

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IPC IPC(8): B01F17/00C09K23/00
Inventor 王利民刘博田禾
Owner EAST CHINA UNIV OF SCI & TECH
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