Paraffin nano emulsion with positive charge and preparation method thereof

A nano-emulsion, positively charged technology, applied in the direction of wax physical treatment, can solve the problems of difficult control of charged amount and large particle size, and achieve the effects of convenient control, narrow particle size distribution and good stability

Inactive Publication Date: 2008-04-30
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current positively charged emulsions generally have the disadvantages of large particle size and difficult control of the charge amount.

Method used

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  • Paraffin nano emulsion with positive charge and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Positively charged paraffin nanoemulsion, the average particle size is 220-400nm, the zeta potential is +15-+30, the components are as follows, all are parts by weight, and the total amount is 100 parts:

[0027] 30 parts of liquid paraffin, 3.3 parts of nonionic surfactant Tween60, 2.7 parts of nonionic surfactant Span60, 0.2 part of cationic surfactant cetyltrimethylammonium bromide, 63.8 parts of water.

[0028] Preparation:

[0029] Mix 30 parts of liquid paraffin with 3.3 parts of nonionic surfactant Tween60 and 2.7 parts of Span60 in the reactor, add all the water in the system into the reactor, keep stirring, and gradually heat to 85 °C; then continue at this temperature Stir for 60 min; place the reactor in an ice-water bath and quickly cool down to room temperature to obtain a paraffin wax nanoemulsion. Then cetyltrimethylammonium bromide was added to the above emulsion, and stirred for another 60 minutes to obtain a positively charged paraffin nanoemulsion. ...

Embodiment 2

[0042] Method is as described in Example 1, the difference is:

[0043] Positively charged paraffin nanoemulsion, the average particle size is 150-250nm, the zeta potential is +40-+50, the components are as follows, all are parts by weight, and the total amount is 100 parts:

[0044] 40 parts of liquid paraffin, 4.5 parts of nonionic surfactant Tween60, 5.5 parts of Span60, 1 part of cationic Gemini surfactant 12-2-12, 49 parts of water.

[0045] The experimental data on stability are as follows:

[0046] Lotion Appearance

Embodiment 3

[0048]Method is as described in embodiment 1 or 2, the difference is:

[0049] Positively charged paraffin nanoemulsion, the average particle size is 100-200nm, the zeta potential is +5-+20, the components are as follows, all are parts by weight, and the total amount is 100 parts:

[0050] 30 parts of liquid paraffin, 3.5 parts of nonionic surfactant Tween60, 4.5 parts of Span60, 2 parts of cationic surfactant dodecyltrimethylammonium bromide, 60 parts of water.

[0051] The experimental data on stability are as follows:

[0052] Lotion Appearance

[0053] storage stability

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Abstract

The invention discloses a preparation method of paraffin wax nanometer emulsion with positive electricity. Oil phase liquid paraffin, nonionic surfactant and water are added into a reactor together, are heated and blended up to the emulsifying temperature, are blended for certain time and then cooled down quickly, thereby, the paraffin wax nanometer emulsion is obtained, and then cationic surfactant is added into the paraffin wax nanometer emulsion and blended, so as to obtain the paraffin wax nanometer emulsion with positive electricity. The invention also discloses the paraffin wax nanometer emulsion with positive electricity produced by using the method, and the emulsion has the advantages that the emulsion particle size is small, the particle size distribution is narrow, the stability is good, the preparation method of the invention is simple, and the charged amount of the emulsion droplet can be controlled conveniently.

Description

technical field [0001] The invention relates to an emulsion and a preparation method thereof, in particular to a positively charged paraffin nanoemulsion and a preparation method thereof. Background technique [0002] Emulsion is an important colloidal dispersion system, which is widely used in the fields of food, petroleum industry, cosmetics and medicine. However, the emulsion itself is a thermodynamically unstable system, which greatly affects its practical application. [0003] The emergence of nanoemulsions greatly improves the stability of emulsions because of their small particle size. Positively charged nanoemulsions have a strong interaction with negatively charged interfaces that widely exist in nature due to their positive charges, so it is of great significance to study them. However, the current positively charged emulsions generally have the disadvantages of large particle size and difficult control of the charge amount. Contents of the invention [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G73/40
Inventor 孙德军李财富梅贞刘伟荣苏长明于培志徐健刘尚营
Owner SHANDONG UNIV
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