Unlock instant, AI-driven research and patent intelligence for your innovation.

A class of gel emulsions stabilized by rosin-based amine oxide surfactants

A gel emulsion and amine oxide-based technology, applied in organic chemistry, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as restricting the practical application of gel emulsion, achieve good emulsion stability, widen application scope, The effect of wide application prospects

Active Publication Date: 2020-06-09
JIANGNAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These factors seriously restrict the practical application of gel emulsion

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A class of gel emulsions stabilized by rosin-based amine oxide surfactants
  • A class of gel emulsions stabilized by rosin-based amine oxide surfactants
  • A class of gel emulsions stabilized by rosin-based amine oxide surfactants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: Synthesis of 6-dehydroabietyl amido-N,N-dimethyl-hexyl amine oxide

[0040] The synthetic route of 6-dehydroabietyl amido-N,N-dimethyl-hexyl amine oxide is as follows:

[0041]

[0042] Add the dehydroabietic acid solid (30g, 0.1mol) into the there-necked flask equipped with tail gas absorption device and reflux condenser, add a small amount of 4-dimethylaminopyridine (DMAP) as catalyst, when the temperature rises to 50°C, start Thionyl chloride (17.94 g, 0.15 mol) was slowly added dropwise. During this process, a large amount of acid gas is generated, which is absorbed by the tail gas absorption device. After the dropwise addition, set the temperature to 72°C and continue the reaction for 3h. After the reaction was completed, excess thionyl chloride was removed by rotary evaporation under reduced pressure to obtain the crude compound 1.

[0043] Add 1,6-hexanediamine (58.1 g, 0.5 mol) and dichloromethane into a three-necked flask. Under full stirring,...

Embodiment 2

[0048] Embodiment 2: 6-dehydroabietyl amido-N, N-dimethyl-hexyl amine oxide gel property determination

[0049] Take 1 mL of deionized water, add 6-dehydroabietamido-N,N-dimethyl-hexylamine oxide (concentration is 4 mmol L -1 , 10mmol·L -1 , 15mmol·L -1 , 20mmol·L -1 , 25mmol·L -1 ), the solution was heated to 40°C to completely dissolve 6-dehydroabietamido-N,N-dimethyl-hexylamine oxide, and then stood at room temperature to observe the state of the solution.

[0050] From image 3 Appearance photographs of gels formed from 6-dehydroabietylamino-N,N-dimethyl-hexylamine oxide in medium (concentrations from left to right are 4mmol·L -1 , 10mmol·L -1 , 15mmol·L -1 , 20mmol·L -1 , 25mmol·L -1 ) It can be seen that when the concentration of 6-dehydroabietamido-N,N-dimethyl-hexylamine oxide is greater than 4mmol·L -1 It can support its own gravity when it is upside down, and has the characteristics of being inverted and not flowing, and the formed gel has good viscoelastic...

Embodiment 3

[0053] Determination of Surface Tension. A series of surfactant aqueous solutions with different concentrations were prepared, and the surface tension was measured by the suspension ring method at 25°C, and the relationship curve between the concentration of the sample aqueous solution and the surface tension was drawn.

[0054] From Figure 4 The surface tension γ of 6-dehydroabietyl amido-N, N-dimethyl-hexyl amine oxide in the medium varies with the concentration C. It can be seen that the surfactant 6-dehydroabietyl amido-N, N-dimethyl The critical micelle concentration of yl-hexylamine oxide is 0.56mmol·L -1 , gamma cmc 35mN·m -1 . It shows that 6-dehydroabietamido-N,N-dimethyl-hexyl amine oxide has good surface activity and can be used to stabilize the emulsion.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a gel emulsion stabilized by a rosin-based amine oxide surfactant, belonging to the technical field of colloid and interface chemistry. The main synthetic raw material of the surfactant of the present invention is dehydroabietic acid from natural product rosin, which is a kind of green surfactant. The critical micelle concentration of the rosin-based surfactant 6-dehydroabietamide-based amine oxide at room temperature is 0.6×10 ‑3 mol L ‑1 . In the oil-water mixed system, a stable gel emulsion can be formed when the content of the surfactant 6-dehydroabietamide-based amine oxide is only 0.22wt% of the continuous phase. The volume fraction of the dispersed phase of the gel emulsion can be adjusted arbitrarily in the range of 1%-98% (v / v), breaking the conclusion that the volume ratio of the internal phase of the traditional gel emulsion must be greater than 74%. At the same time, the rosin-based surfactant 6-dehydroabietamide-based amine oxide in the present invention can make most of the oil form a stable gel emulsion, which can be applied to food, medicine, daily chemical products, tissue engineering, environmental protection, water pollution management and other fields.

Description

technical field [0001] The invention relates to a gel emulsion stabilized by a rosin-based amine oxide surfactant, belonging to the technical field of colloid and interface chemistry. Background technique [0002] Gel emulsion refers to a jelly-like emulsion system composed of a dispersed phase (inner phase) and a continuous phase (outer phase) in the presence of a certain stabilizer. Due to its special structure and properties, gel emulsions are widely used in food, cosmetics, materials, drug delivery and other fields. The type and concentration of the stabilizer have an important influence on the stability of the gel emulsion. Surfactants are the most commonly used stabilizers. In the oil-water system, the surfactant molecules are aligned at the oil-water interface, which reduces the interfacial energy and promotes the formation of gel emulsion. However, in order to achieve the effect of the gel, in the preparation process of the gel emulsion, the amount of the surfacta...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/22B01F17/00C07C291/04C08F220/20C08F222/38C08J9/28C08F2/30A61L27/18A61L27/56C09K23/22C09K23/00
Inventor 宋冰蕾闫婷婷杨明珠崔正刚
Owner JIANGNAN UNIV