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CO2/N2-H2O2 dual-stimulation response surfactant and preparation method thereof

A N2-H2O2, dual stimulus response technology, applied in chemical instruments and methods, chemical/physical processes, organic chemistry, etc., can solve the problems of drug delivery and application limitations, and achieve simple synthesis methods, good surface properties, and high product purity Effect

Active Publication Date: 2016-04-13
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in order to meet the precise controllability of the application of surfactants in the high-tech field, the current research still has certain limitations. For example, the most promising CO 2 / N 2 switch surfactant, although it has CO 2 / N 2 The regulation method is mild, cheap and environmentally friendly, and makes the surfactant easy to separate and recover from the aqueous phase, etc., but its application in drug delivery is limited

Method used

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  • CO2/N2-H2O2 dual-stimulation response surfactant and preparation method thereof
  • CO2/N2-H2O2 dual-stimulation response surfactant and preparation method thereof
  • CO2/N2-H2O2 dual-stimulation response surfactant and preparation method thereof

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Embodiment 1

[0020] Embodiment 1: the synthesis of surfactant intermediate didodecyl methyl tertiary amine selenide

[0021] (1) Synthesis of dodecylmethylethanolamine:

[0022] Take 35.591g (0.5mol) of 4-N-monomethylethanolamine and 11.66g (0.11mol) into a 250ml three-necked flask, add 100ml of ethanol, raise the temperature to 50°C, and add 24.9g (0.1mol) dropwise with a constant pressure funnel Dodecane bromide was transferred to a three-necked flask and reacted overnight. Rotary evaporation to remove solvent ethanol, water washing to remove inorganic salts and excess N-monomethylethanolamine, anhydrous magnesium sulfate to desalt, fractional distillation to obtain pure dodecylmethylethanolamine transparent liquid;

[0023] (2) Synthesis of chloroethyl dodecyl methyl tertiary amine:

[0024] Weigh 24.3g of dodecylmethylethanolamine and add it to a 250ml three-necked flask, add 100ml of dichloromethane, weigh 11.897g of thionyl chloride and slowly drop it into the three-necked flask wi...

Embodiment 2

[0027] Example 2: CO 2 / N 2 Switching

[0028] The conductivity test is currently proving that CO 2 / N 2 One of the reliable methods for switchability and switch reversibility of switch-type surfactants is to pass the water / ethanol (1:1) solution of surfactant intermediates into CO 2 , measure the conductivity of the solution at regular intervals, and when the conductivity does not change, feed N 2 Also measure the conductivity of the solution at regular intervals. Surfactant into CO 2 and N 2 The change in conductivity is shown in the attached Figure 5 .

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Abstract

The invention discloses a CO2 / N2-H2O2 dual-stimulation response surfactant and a preparation method thereof. CO2 is introduced to a surfactant to form a bicarbonate cationic surfactant, N2 is introduced to decompose the surfactant to lose surface activity, H2O is added to the surfactant to oxidize in order to form a selenium oxide, vitamin C is added to reduce the selenium oxide into the initial surfactant, so the surfactant has CO2 / N2-H2O2 dual-stimulation responsiveness.

Description

(1) Technical field [0001] The present invention relates to a class of CO 2 / N 2 - Light double stimulus responsive surfactant and preparation method thereof, belonging to the field of colloid and interface chemistry. (2) Background technology [0002] The regulation of the structure, properties and functions of surfactant molecules and their aggregates is one of the current research hotspots. Traditional control methods are generally by changing the temperature or adding chemical agents such as acids, alkalis, salts, and co-surfactants, which inevitably increase the emission and pollution of chemical substances, and it is difficult to achieve reversible control and surfactant Easy separation. Therefore, it is of great significance to develop new, efficient, simple and environmentally friendly green regulation methods. Therefore, environmental stimulus-responsive surfactants emerge as the times require. [0003] The so-called environmental stimulus-responsive surfactant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C391/00B01F17/16B01F17/42C09K23/16C09K23/42
CPCC07C391/00C09K23/00
Inventor 蒋建中尹金超王国政
Owner JIANGNAN UNIV
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