Method for preparing monodisperse emulsion

A monodisperse and emulsion technology, applied in the field of emulsion, can solve the problems of small flow rate of dispersed phase and continuous phase, inability to achieve high flux, etc., and achieve the effects of good dispersibility, shortened preparation period and stable performance.

Inactive Publication Date: 2012-11-28
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

This method is simple to operate, and the maximum pressure drop is about 20KPa, which is much smaller than that of the membrane emulsification method. However, the flow rate of the dispersed phase and the continuous phase is also very small during the preparation process. The range of flow adjustment is about 0.5-3.5mL / min, so it is still impossible high throughput

Method used

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  • Method for preparing monodisperse emulsion
  • Method for preparing monodisperse emulsion
  • Method for preparing monodisperse emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The structure of the sleeve-type microreactor used is as follows: figure 1 As shown, the radial spacing of the annular microchannel is 500 μm, and the diameter of the micropore is 10 μm. At normal temperature, put 1L of refined soybean oil into the liquid storage tank 7, pass through the peristaltic pump 8 and the liquid flow meter 9, and enter the inner tube 5 from the inlet 1 at one end of the casing microreactor horizontally; the 5L mass fraction is 1% The sodium lauryl sulfate aqueous solution is put into liquid storage tank 14, and through peristaltic pump 13, liquid flowmeter 12, injects the outer pipe 6 of casing type microreactor from the liquid inlet 2 of reactor side. The two solutions come into cross-flow contact in the micropore part of the microreactor to form an emulsion. The feed flow rates of the two solutions can be controlled by adjusting the rotating speeds of the peristaltic pumps 8 and 13 according to the display values ​​of the liquid flow meters ...

Embodiment 2

[0035] The structure of the sleeve-type microreactor used is as follows: figure 1 As shown, the radial spacing of the annular microchannel is 750 μm, and the diameter of the micropore is 10 μm. At normal temperature, put 1L paraffin oil into the liquid storage tank 7, pass through the peristaltic pump 8 and the liquid flow meter 9, and enter the inner tube 5 from the inlet 1 at one end of the casing microreactor in the horizontal direction; the 2.5L mass fraction is 1% The polysorbate-80 aqueous solution is put into liquid storage tank 14, through peristaltic pump 13, liquid flowmeter 12, injects the outer pipe 6 of sleeve type microreactor from the liquid inlet 2 of reactor side. The two solutions come into cross-flow contact in the micropore part of the microreactor to form an emulsion. The feed flow rates of the two solutions can be controlled by adjusting the rotating speeds of the peristaltic pumps 8 and 13 according to the display values ​​of the liquid flow meters 9 an...

Embodiment 3

[0037] The structure of the sleeve-type microreactor used is as follows: figure 1 As shown, the radial spacing of the annular microchannel is 500 μm, and the diameter of the micropore is 10 μm. At normal temperature, put 1L soybean oil into the liquid storage tank 7, through the peristaltic pump 8 and the liquid flow meter 9, enter the inner tube 5 from the inlet 1 at one end of the casing microreactor horizontally; The polysorbate-80 aqueous solution is put into the liquid storage tank 14, through the peristaltic pump 13, the liquid flow meter 12, and injects the outer tube 6 of the casing microreactor from the liquid inlet 2 on the side of the reactor. The two solutions come into cross-flow contact in the micropore part of the microreactor to form an emulsion. The feed flow rates of the two solutions can be controlled by adjusting the rotating speeds of the peristaltic pumps 8 and 13 according to the display values ​​of the liquid flow meters 9 and 12 respectively, wherein ...

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Abstract

The invention discloses a method for preparing monodisperse emulsion and belongs to the technical field of emulsion. The monodisperse emulsion is prepared by using a tube-in-tube annular channel reactor; a continuous phase is introduced into an outer tube of the tube-in-tube annular channel reactor, a disperse phase is introduced into an inner tube of the tube-in-tube annular channel reactor, and the continuous phase and the disperse phase fully contact on micropore parts to form the emulsion; and according to the method, equipment is simple, cost is low, flux is high, and continuous operation can be realized, so that the preparation cycle can be greatly shortened, and production efficiency is improved. The emulsion prepared by the method is high in quality, stable in performance, and high dispersibility; and emulsion droplets are uniform in particle size.

Description

Technical field: [0001] The invention relates to a preparation method of a monodisperse emulsion, which belongs to the field of emulsion technology. Background technique: [0002] An emulsion is a mixture of one or several liquids dispersed in another immiscible liquid in the form of particles (droplets or liquid crystals). Widely used in food, cosmetics, pesticides and pharmaceutical industries. The particle size and the uniformity of distribution affect the stability of the emulsion, and good stability is a necessary prerequisite for the application of the emulsion. [0003] At present, the methods for preparing emulsion mainly include traditional emulsification method and new technology emulsification method. Traditional emulsification methods include colloidal grinding, mechanical stirring, high-pressure homogenization and ultrasonication. These emulsification methods have problems such as high energy consumption, poor system reproducibility, and polydispersity of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/08B01F5/06B01F15/04
Inventor 王洁欣李婷陈建峰单从云邵磊
Owner BEIJING UNIV OF CHEM TECH
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