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Wormlike micelle constructed by electrostatic based tetrameric surfactant

A surfactant and electrostatic technology, applied in the direction of cationic surface active compounds, drilling compositions, amino compound preparation, etc., to achieve the effect of simple purification process, high biodegradability, and avoid synthesis reaction

Inactive Publication Date: 2018-11-23
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art mainly studies the aggregate morphology and surface tension properties of the electrostatic construction of oligomeric surfactants. However, the length of the quaternary ammonium head group linking group series has a great influence on the flow of green environmental protection type oleic acid-based tetrameric surfactants. Behavioral effects never reported

Method used

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  • Wormlike micelle constructed by electrostatic based tetrameric surfactant
  • Wormlike micelle constructed by electrostatic based tetrameric surfactant
  • Wormlike micelle constructed by electrostatic based tetrameric surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: tetramer quaternary ammonium salt surfactant synthetic route

[0034] Electrostatically constructed tetrameric surfactant, the structural formula is as follows:

[0035]

[0036] The synthetic route of the tetrameric surfactant of electrostatic construction is as follows:

[0037]

[0038] The preparation method of electrostatically constructed tetrameric surfactant is to mix trimethylamine and 1,3-dibromopropane at a molar ratio of 1:5 to generate 3-bromo-N,N,N-trimethylpropane-1 - Ammonium. 3-Bromo-N,N,N-trimethylpropan-1-ammonium and N 1 ,N 1 ,N 2 ,N 2 -Tetramethylethane-1,2-diamine is mixed according to the molar ratio of 2:1 to generate N 1 ,N 1 '-(ethane-1,2-diyl)bis(N 1 , N 1 ,N 3 ,N 3 ,N 3 - pentamethylpropane-1,3-diammonium). N 1 ,N 1 '-(ethane-1,2-diyl)bis(N 1 , N 1 ,N 3 ,N 3 ,N 3 -pentamethylpropane-1,3-diammonium) mixed with sodium oleate in an equimolar ratio to generate the final electrostatically constructed tetrameri...

Embodiment 2

[0039] Example 2: Synthesis of 3-bromo-N,N,N-trimethylpropan-1-ammonium

[0040] Add 1,3-dibromopropane (101g 0.5mol), trimethylamine (5.9g 0.1mol) and acetone (300g) into a 500ml single-necked bottle, and react at 10°C for 4 hours. After the reaction, remove the acetone by suction filtration . Then wash the white filter cake with acetone, and finally recrystallize the white solid three times with ethanol to obtain the final pure product 3-bromo-N,N,N-trimethylpropan-1-ammonium. The yield is 71%, and the yield=(mole amount of raw material / mole amount of product)×100%.

Embodiment 3

[0041] Example 3: Synthesis of N1, N1'-(ethane-1,2-diyl)bis(N1,N1,N3,N3,N3-pentamethylpropane-1,3-diammonium)

[0042] 3-bromo-N,N,N-trimethylpropan-1-ammonium (36.2g, 0.2mol), N 1 ,N 1 ,N 2 ,N 2 -Tetramethylethane-1,2-diamine (11.6g, 0.1mol) and ethanol (200g) were put into a 500ml single-necked bottle, and stirred at 70°C for 10 hours after the addition was completed. After fully reacting, the solvent was removed by rotary evaporation to obtain N1,N1'-(ethane-1,2-diyl)bis(N1,N1,N3,N3,N3-pentamethylpropane-1,3-diammonium ). Yield 70%.

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Abstract

The invention discloses a wormlike micelle constructed by an electrostatic based tetrameric surfactant and belongs to the technical fields of science and application of surfactants. SO and Bola 3-n-3are compounded together to increase the viscosity of the solution with equal sodium oleate concentration by nearly 90,000 times, and the unique characteristic is favorable for preparing fluids with different viscoelasticity by utilizing simple and rapid non-covalent interaction. The invention promotes a new idea and a new method for preparing environmentally-friendly oligomeric surfactants, and provides a new idea for studying the structures and properties of oleic acid based surfactants. The wormlike micelle constructed by the environment-friendly pseudo-oligomeric surfactant also expands theapplication potential of ionic liquid in home care products, oil field yield increase liquid and nano biotechnology.

Description

technical field [0001] The invention relates to a worm-like micelle constructed by an electrostatic tetramer surfactant, and belongs to the technical field of surfactant science and application. Background technique [0002] Surfactants are a class of substances that can significantly reduce the surface tension of a solution and form ordered molecular aggregates in the bulk phase when added in a very small amount, consisting of hydrophobic groups and hydrophilic groups. Due to its amphiphilic properties, surfactants can not only adsorb on the interface, but also form ordered aggregates in a solution of a certain concentration, so they have the properties of wetting, emulsifying, solubilizing, washing, and dispersing. In solution, it can self-organize to form various ordered molecular aggregates, such as spherical micelles, rod micelles, worm micelles, vesicles and liquid crystals, etc. The morphology, formation conditions and related mechanisms of surfactant aggregates have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/63C07C209/12C07C57/12C07C51/41C09K3/16C09K8/584C09K8/60C11D1/62
CPCC07C211/63C07C51/412C07C57/12C07C209/12C09K3/16C09K8/584C09K8/602C11D1/62
Inventor 裴晓梅李朝旺许茂东宋冰蕾崔正刚
Owner JIANGNAN UNIV
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