Low-energy preparation method of positive electricity nanometer emulsion

A nano-emulsion, positive charge technology, applied in mixing methods, chemical instruments and methods, dissolution and other directions, can solve the problems of high cost, high energy consumption, easy to contaminate preparations, etc., and achieve the effects of energy saving, easy realization and cost reduction

Inactive Publication Date: 2010-06-09
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the traditional high-energy preparation method of nanoemulsion can be mass-produced, it consumes high energy, costs high, and is easy to contaminate the preparation; most of the current nanoemulsions are negatively charged, and the surfaces of substances widely existing in nature are also mostly negatively charged, while positively charged nanoemulsions are also negatively charged. It is easier to adsorb through electrostatic interaction and has special application advantages, so it is more practical to prepare positively charged nanoemulsions with low energy methods

Method used

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  • Low-energy preparation method of positive electricity nanometer emulsion
  • Low-energy preparation method of positive electricity nanometer emulsion
  • Low-energy preparation method of positive electricity nanometer emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Positively charged paraffin nanoemulsion, with an average particle size of 100-250nm and a zeta potential of +15-+35mV, based on 100 parts by weight (unit: gram), the components are as follows:

[0024] 30 parts of liquid paraffin, 3.3 parts of nonionic surfactant Tween60, 2.7 parts of nonionic surfactant Span60, 0.4 part of cationic surfactant cetyltrimethylammonium bromide, 2 parts of NaBr, 61.6 parts of water share.

[0025] Preparation:

[0026] 0.4 parts of cationic surfactant cetyltrimethylammonium bromide and 2 parts of NaBr are dissolved in 61.6 parts of water to obtain the water phase, and then 30 parts of the oil phase are mixed with 3.3 parts of nonionic surfactant Tween60 and 2.7 parts of Span60 Put it together with the water phase in the reactor and mix evenly, then stir and emulsify at 150rpm at 75°C for 40min; place the reactor in an ice-water bath and quickly cool down to room temperature to obtain a positively charged nanoemulsion.

[0027] The positi...

Embodiment 2

[0039] Method is as described in Example 1, the difference is:

[0040] The emulsification temperature is 77°C, the average particle size of the positively charged nanoemulsion is 150-350nm, and the zeta potential is +15-+40mV. Based on 100 parts by weight (unit: gram), the components are as follows:

[0041] 40 parts of n-hexadecane, 4.5 parts of non-ionic surfactant Tween605.5 parts, Span605.5 parts, 0.3 parts of cationic Gemini surfactant 12-2-12, 1.5 parts of NaCl, 49 parts of water.

[0042] The experimental data on stability are as follows:

[0043] Lotion Appearance

Embodiment 3

[0045] Method is as described in embodiment 1 or 2, the difference is:

[0046] The emulsification temperature is 78°C, the average particle size of the positively charged paraffin nanoemulsion is 100-280nm, and the zeta potential is +5-+25mV. The components are as follows, all in parts by weight (unit: gram), and the total amount is 100 parts:

[0047] 40 parts of n-tetradecane, 4.5 parts of nonionic surfactant Tween60, 5.5 parts of Span60, 0.2 part of cationic surfactant octadecylamine, Na 2 SO 4 0.5 parts, 49.3 parts of water.

[0048] The experimental data on stability are as follows:

[0049] Lotion Appearance

[0050] Lotion Appearance

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Abstract

The invention discloses a low-energy preparation method of a positive electricity nanometer emulsion, which comprises the steps of: dissolving cationic surface active agent and inorganic salt in water to obtain water phase; evenly mixing oil phase, non-ionic surface active agent and the water phase to add into a reactor; emulsifying by means of low-speed stirring under a certain emulsification temperature for a certain time; and fast reducing temperature by means of ice water bath to obtain the positive electricity nanometer emulsion. The invention further discloses the positive electricity nanometer emulsion prepared by the method, which has the characteristics of small grain diameter, narrow grain diameter distribution and good long-term stability. Furthermore, the method is convenient in operation, is energy-saving, reduces the cost, and is convenient to adjust and control the emulsion to have electric quantity.

Description

technical field [0001] The invention relates to a preparation method of nanoemulsion, in particular to a low-energy preparation method of positively charged nanoemulsion. Background technique [0002] Compared with ordinary emulsions, nanoemulsions have smaller droplet size, uniform dispersion, and certain dynamic stability. They can avoid obvious flocculation and coalescence for several months or even years. They are widely used in oil extraction, medicine, food, and building energy conservation , Concrete water-saving maintenance, agriculture, papermaking, wood-based panels, special ceramics, light industry and other fields can be better widely used. [0003] Although the traditional high-energy preparation method of nanoemulsion can be mass-produced, it consumes high energy, costs high, and is easy to contaminate the preparation; most of the current nanoemulsions are negatively charged, and the surfaces of substances widely existing in nature are also mostly negatively ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/08
Inventor 孙德军梅贞于丽杰李财富徐健苏长明
Owner SHANDONG UNIV
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