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Micro emulsifying method under magnetic field action

A magnetic field and microemulsion technology, applied in chemical instruments and methods, mixing methods, dissolution, etc., can solve problems such as formulation limitations, high cost of surfactants, and negative effects on product performance.

Inactive Publication Date: 2007-08-15
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of formulation often requires more surfactants. Due to the high cost of surfactants and may have a negative impact on product performance, the formulation will be limited in practical application

Method used

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  • Micro emulsifying method under magnetic field action

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Using the device shown in Figure 1, under the temperature condition of 25°C, place the water / AOT (two-2-ethylhexyl sodium sulfosuccinate) / n-heptyl The microemulsion prepared by alkanes, the circulation pump injects the water in the constant temperature water bath into the jacket of the test tube with jacket, and removes the heat generated by the electromagnetic coil in time, so that the liquid in the two test tubes is under the same temperature condition . The amounts of the three components in the test tube are respectively: 0.475 g of ionic surfactant AOT, 1 ml of water at 25° C., and 10 ml of n-heptane. After stabilization, the measured conductivity value of the liquid in the magnetic field is 7.6μΩ -1 ; The conductivity value of the liquid in the non-magnetic field is 7.1μΩ -1 .

Embodiment 2

[0024] Under the temperature condition of 25 ℃, place the microemulsion prepared by water / AOT (sodium 2-ethylhexyl sulfosuccinate) / n-heptane respectively in a constant temperature water bath and an alternating magnetic field under a voltage of 100V, The circulation pump injects the water in the constant temperature water bath into the jacket of the jacketed test tube, and removes the heat generated by the electromagnetic coil in time, so that the liquid in the two test tubes is at the same temperature. The amounts of the three components in the test tube are respectively: 0.475 g of ionic surfactant AOT, 1 ml of water at 25° C., and 10 ml of n-heptane. After stabilization, the measured conductivity value of the liquid in the magnetic field is 7.6μΩ -1 ; The conductivity value of the liquid in the non-magnetic field is 7.1μΩ -1 .

Embodiment 3

[0026] Under the temperature condition of 20 ℃, the microemulsion prepared by water / AOT (sodium 2-ethylhexyl sulfosuccinate) / n-heptane was placed respectively in a constant temperature water bath and an alternating magnetic field under a voltage of 50V, The circulation pump injects the water in the constant temperature water bath into the jacket of the jacketed test tube, and removes the heat generated by the electromagnetic coil in time, so that the liquid in the two test tubes is at the same temperature. The amounts of the three components in the test tube are respectively: 0.475 g of ionic surfactant AOT, 1.0 ml of water at 25° C., and 10.0 ml of n-heptane. After stabilization, the measured conductivity value of the liquid in the magnetic field is 7.4μΩ -1 ; The conductivity value of the liquid in the non-magnetic field is 7.0μΩ -1 .

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Abstract

The present invention discloses micro emulsifying process under the action of magnetic field and with reduced surfactant consumption and high speed. The micro emulsifying process includes applying AC voltage to hollow coil, and compounding micro emulsion with water; surfactant and n-heptane as oil phase in the weight ratio of 1.0 to 0.32-0.67 to 5.0-10.0; setting the compounded micro emulsion inside test tube with cooling jacket in constant water bath at 20-40 deg c and in 50-150 V AC magnetic field, and injecting water from the water bath into the test tube with a circulating pump. The said process has short micro emulsion stabilizing period, raised micro emulsion stability and reduced surfactant consumption.

Description

technical field [0001] The invention relates to the fields of new materials, medicine, chemical product synthesis, etc., and more specifically relates to a microemulsification method under the action of a magnetic field. Background technique [0002] Microemulsions are transparent or translucent thermodynamically stable systems that are spontaneously formed after mixing water, oil, surfactants, and additives in appropriate proportions. The degree of dispersion of the oil-water two-phase is very high, and the particle size of the dispersed phase is uniform, and the particle size is usually 10nm to 100nm. Using this feature, micro-reaction environments can be constructed to obtain products with special structures or sizes, such as nanoparticles, microemulsion pesticides, and medical microcapsules. With the deepening of basic research on microemulsion process and microemulsion, microemulsion method will be more widely used. [0003] When the composition of the system meets th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F3/08B01F13/08
Inventor 辛峰王富民陈苗鑫张明
Owner TIANJIN UNIV