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Imidazole surfactant, and temperature-thickening wormlike micelle formed by imidazole surfactant

A technology of worm-like micelles and surfactants, applied in thickeners, drilling compositions, organic chemistry, etc., can solve problems such as limitations, and achieve the effect of wide temperature response range and excellent temperature response ability

Pending Publication Date: 2020-05-15
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This limits the application of worm-like micelles composed of a single surfactant

Method used

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  • Imidazole surfactant, and temperature-thickening wormlike micelle formed by imidazole surfactant
  • Imidazole surfactant, and temperature-thickening wormlike micelle formed by imidazole surfactant
  • Imidazole surfactant, and temperature-thickening wormlike micelle formed by imidazole surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Surfactant [C 18 imC 9 ]Br preparation, the specific steps are as follows:

[0028] (1) Stearyl imidazole: 2.12 g of sodium metal was added to a 100 mL three-necked flask containing 40.0 mL of ethanol. When the sodium is completely dissolved, add 6.85g of imidazole, and then dropwise add 11.2g of bromooctadecane, the ratio of imidazole to bromooctadecane is 3.00:1.00, the temperature of the reaction oil bath is controlled at 65°C, magnetic stirring N 2 Under protection, react for 48 hours; after the reaction, take the supernatant liquid, remove the ethanol by rotary evaporation to a constant weight of the sample, wash with ultrapure water for 3-4 times; finally transfer the organic layer, add ethanol, rotary evaporation, and vacuum dry to constant weight Then, octadecyl imidazole was obtained with a yield of 45.3%;

[0029] (2) 1-octadecyl-3-nonylimidazole bromide: Dissolve 3.12g of octadecylimidazole in 40.0mL ethanol, then add 2.62g of bromononane, stearylimidazole and br...

Embodiment 2

[0031] Stearyl imidazole: Add 4.16 g of sodium metal to a 250 mL three-necked flask containing 70.0 mL of ethanol. When the sodium is completely dissolved, add 11.3g of imidazole, and then dropwise add 36.9g of bromooctadecane. The ratio of imidazole to bromooctadecane is controlled to 1.50:1.00, the reaction temperature is controlled at 65℃, magnetic stirring and N 2 React for 48h under protection; after the reaction, take the supernatant liquid, remove the ethanol by rotary evaporation to the constant weight of the sample, wash with ultrapure water for 3-4 times; finally transfer the organic layer, add ethanol and rotary evaporate, and vacuum dry to constant weight , To obtain octadecyl imidazole with a yield of 42.7%;

[0032] Dissolve 10.5g octadecyl imidazole in 60.0mL ethanol, then add 7.13g bromononane, the amount of octadecyl imidazole and bromononane is controlled to 1.00:1.05, under magnetic stirring and nitrogen protection Under the conditions, the reaction temperature...

Embodiment 3

[0038] Add [C 18 imC 9 ]Br, heated in a water bath to dissolve, vortex and shake, repeat 3 times. Put it in a centrifuge while it is hot to remove air bubbles, repeat 3 times, prepare separately [C 18 imC 9 ]Br concentration is 60mmol·L -1 , 80mmol·L -1 , 100mmol·L -1 And 120mmol·L -1 . Rheostess RS600 rheometer was used to measure its viscoelasticity.

[0039] figure 1 Is the temperature to 60mmol·L -1 [C 18 imC 9 ] The effect of the viscoelasticity of worm-like micelles formed by Br. It can be seen from the figure that [C 18 imC 9 The worm-like micelle formed by Br is in the temperature range of 25~51℃, the system viscosity is positively correlated with temperature, and the system viscosity at 51℃ reaches the maximum value of 2.29Pa·s, after which the system viscosity is negatively correlated with temperature. After the temperature rises to 62℃, [C 18 imC 9 ] The worm-like micelle structure formed by Br began to be destroyed.

[0040] figure 2 Is the temperature to 80mmol·L -1...

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Abstract

The invention discloses an imidazole surfactant, and a wormlike micelle formed by the imidazole surfactant and having a temperature thickening effect. The imidazole surfactant capable of forming the temperature thickening type wormlike micelle is brominated 1-octadecyl-3-nonylimidazole, and the structural formula of the imidazole surfactant is shown in the specification. The imidazole surfactant bromo-1-octadecyl-3-nonyl imidazole can form the wormlike micelle in water without an additive, the wormlike micelle formed under a single-component condition has a temperature thickening effect, the temperature response range of the wormlike micelle with temperature response is wide and is 30-80 DEG C, and the imidazole surfactant can be applied to the fields of oil field thickeners, lubricants and the like.

Description

Technical field [0001] The invention belongs to the technical field of surfactants, and relates to an imidazole surfactant, a temperature thickening type worm-like micelle formed and a preparation method thereof. Background technique [0002] Surfactant molecules have a variety of aggregation forms in water, such as spherical micelles, rod-shaped micelles, worm-like micelles, vesicles, and double-layer structures. The diversification of the aggregation forms expands its applications in production and life. Among them, the three-dimensional network structure of worm-like micelles enables the system to maintain its rheological properties under harsher conditions while having good viscoelasticity. Therefore, worm-like micelles have a wide range of applications in industrial production, enhanced oil recovery, clean fracturing fluid and nanomaterial preparation. [0003] At present, the research on worm-like micelles mainly focuses on the mixed system of surfactants and salts or cosolv...

Claims

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Application Information

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IPC IPC(8): C07D233/10B01F17/32C09K8/584C10M115/08C10N50/10C09K23/32
CPCC07D233/10C09K8/584C10M115/08C09K2208/30C09K23/00
Inventor 胡益民曹慧娇郭霞许文林王雅琼
Owner YANGZHOU UNIV
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