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Gemini surfactant 18-2Ar-18 and preparation method thereof

A surfactant and powder technology, applied in the field of Gemini surfactant 18-2Ar-18 and its preparation, can solve the problem of not too much research and application

Inactive Publication Date: 2015-09-02
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are not too many studies and applications of insoluble Gemini surfactants on the gas-liquid interface.

Method used

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  • Gemini surfactant 18-2Ar-18 and preparation method thereof
  • Gemini surfactant 18-2Ar-18 and preparation method thereof
  • Gemini surfactant 18-2Ar-18 and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1 (see figure 1 )

[0031] A preparation method of Gemini surfactant 18-2Ar-18, comprising the following steps:

[0032] (1) Dissolution of raw materials

[0033] Each raw material that adopts in the enforcement of the present invention is:

[0034] N,N-Dimethyloctadecylamine, using ≥97% of the high-grade Behringwell reagent;

[0035] 4,4 ’ -Bis(bromomethyl)biphenyl, using high-grade products with TCI≥98%;

[0036] Tetrahydrofuran, using Alfa Aesar ≥ 98% superior grade;

[0037] Acetone, adopts the product of Shanghai Lingfeng Reagent Company;

[0038] Chloroform, adopts the product of Shanghai Reagent Company;

[0039] Ethanol, ≥99.7%, using the products of Sinopharm Chemical Reagent Co., Ltd.;

[0040] Ethyl acetate, ≥99.5%, adopts the product of Shanghai Lingfeng Reagent Company;

[0041] Ultrapure water with a conductivity of 18.2 MΩ·cm was used.

[0042] Weigh 0.78424g of 4,4'-bis(bromomethyl)biphenyl, and slowly add it into a conical round-bott...

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Abstract

The invention provides a Gemini surfactant 18-2Ar-18 (1,1'-biphenyl-4,4'-dimethylene-bis(methyl dioctadecyl ammonium bromide) having a linking group which is a rigid symmetrical group; the structural formula of the Gemini surfactant 18-2Ar-18 is shown as the specification; a preparation method of 18-2Ar-18 comprises the following steps: 1. dissolving raw materials; 2. preparing white crude products; 3. preparing white solid powder; 4. preparing the final white solid powder with the structural formula; and 5. storing the product. The Gemini surfactant 18-2Ar-18 can be used for solving the specific orientation problem of molecules of the Gemini surfactant on a gas-liquid interface.

Description

technical field [0001] The invention relates to the technical field of research, preparation and application of surfactants, in particular to a Gemini surfactant 18-2Ar-18 and a preparation method thereof. Background technique [0002] Gemini surfactant is a new generation of surfactant with a special molecular structure, it combines two single-chain single-head group common surfactants at the ionic head group through chemical bonding, which inhibits the surfactant from The separation force of the head group in the process of ordered aggregation can obviously improve the surface activity. A large number of studies have shown that the properties of Gemini surfactants in solution and at the gas-liquid interface are largely determined by the properties of the linking groups in Gemini surfactants. Compared with traditional surfactants, Gemini surfactants have more prominent physical and chemical properties, and have excellent performance: it is easier to adsorb at the gas-liqui...

Claims

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Application Information

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IPC IPC(8): B01F17/18C09K23/18
Inventor 陈启斌沈锦成王丽
Owner EAST CHINA UNIV OF SCI & TECH