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A method for improving a water-based foam property of a surfactant system by adopting a hyperbranched polysaccharide polymer

A technology of surfactants and polysaccharide polymers, which is applied in the fields of daily chemistry and environmental chemistry, can solve the problems of reducing the tendency of surfactant interface adsorption, unfavorable foam performance, and decreased foamability, so as to improve viscoelasticity and avoid static electricity function, the effect of enhancing stability

Active Publication Date: 2019-03-29
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong electrostatic interaction between the molecules of the polymer / surfactant compound system, the interface adsorption tendency of the surfactant is often reduced, which is not conducive to improving the foam performance of the system.
Even though some polymers can interact with surfactants on the gas-liquid interface to improve the stability of the foam, but at the same time, the interaction in the bulk phase will lead to a decrease in foaming properties, so it can also improve the foaming properties of the surfactants. Water-soluble polymers with low foam capacity and foam stability are rare

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A stable foam system based on natural hyperbranched polysaccharide polymers, the mass concentration of natural hyperbranched polysaccharide polymers in the system is 1.5g / L, and the mass ratio of hyperbranched polysaccharide polymers to surfactants is: (5-60) : (1-5), the surfactant is sodium polyoxyethylene ether sulfate (AES), and the hyperbranched polysaccharide polymer is exopolysaccharide (EPS) produced by fermentation of deep-sea bacteria.

[0044] The preparation method of above-mentioned stable foam system comprises steps as follows:

[0045] The natural hyperbranched polysaccharide polymer and the surfactant are respectively prepared as a mother liquor with a mass fraction of 0.5-3%, and then the exopolysaccharide mother liquor and the surfactant mother liquor are mixed at a mass ratio of 15:40 to 15:0.4, and stirred for 1~ After 4 hours, mix evenly and add water, so that the total concentration of exopolysaccharide and surfactant in the solution is 0.15%-0.5%,...

Embodiment 2

[0058] A stable foam system based on natural hyperbranched polysaccharide polymers, the mass concentration of natural hyperbranched polysaccharide polymers in the system is 1.5g / L, and the mass ratio of hyperbranched polysaccharide polymers to surfactants is: (5-60) : (1-5), the surfactant is dodecyl sulfobetaine (DSB), and the hyperbranched polysaccharide polymer is exopolysaccharide (EPS) produced by fermentation of deep-sea bacteria.

[0059] Experimental Example 2 Foamability and Foam Stability Verification

[0060] 1. Foaming test of different systems

[0061] Preparation surfactant concentration is the AES solution of 10mM, 5mM, 1mM, 0.1mM, 0.01mM, 0.001mM, and compares the foamability with the foam system of Example 2 of different surfactants, the quality of EPS in Example 2 The concentration was 1.5g / L, and the surfactant concentrations were 10mM, 5mM, 1mM, 0.1mM, 0.01mM, and 0.001mM, respectively.

[0062] Take 50mL of the above-mentioned solutions with different co...

Embodiment 3

[0071] A stable oil-resistant foam system, including hyperbranched polysaccharide polymer, surfactant, oil phase and water, the concentration of hyperbranched polysaccharide polymer in the system is 0.02-0.2g / L, hyperbranched polysaccharide polymer and surfactant The mass ratio of the hyperbranched polysaccharide polymer to the oil phase is: (5-15): (1-5), and the mass ratio of the hyperbranched polysaccharide polymer to the oil phase is: (5-15): (5-60). The surfactant is sodium polyoxyethylene ether sulfate (AES), the concentration of the surfactant is 1 mM, and the hyperbranched polysaccharide polymer is a derivative of sodium alginate.

[0072] The system of surfactant, oil phase and water without adding derivatives of sodium alginate is used as control group 1, and hyperbranched polysaccharides of different concentrations are set in the range of 0.02-0.2g / L in embodiment 3 hyperbranched polysaccharide polymer concentration Polysaccharide polymer, stir evenly with a magneti...

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PUM

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Abstract

The present invention relates to a method for improving a water-based foam property of a surfactant system by adopting a hyperbranched polysaccharide polymer. In the method, the polysaccharide polymer(water-soluble) having a hyperbranched structure and a proper molecular weight is adopted to improve the water-based foam property. The polysaccharide polymer having a hyperbranched structure and a proper molecular weight and a surfactant have proper interaction functions, thus avoiding strong electrostatic effect, significantly improving foaming properties and foaming stability of different surfactants, reducing the minimum foaming concentration of the surfactants so that foam can exist stably, reducing the dosage of surfactants and avoiding environment damage caused by large dosages of surfactants. The polysaccharide polymer can improve the oil resistance of different surfactant systems, and is of great significance for expanding application of water-based foam in the fields of daily chemistry, oilfield chemistry and environmental chemistry.

Description

technical field [0001] The invention relates to a method for improving the water-based foam performance of a surfactant system by using a hyperbranched polysaccharide polymer, and belongs to the technical field of oil and gas field development and production engineering, daily chemistry and environmental chemistry. Background technique [0002] Water-based foams are widely used in household chemistry, oil field chemistry, environmental chemistry and other fields. Surfactants are often used as foaming agents because of their good foaming ability and foam stabilizing ability. In these applications, good foaming and foam stability are must-haves for the system. However, in practical applications, there are often some harsh conditions, such as high temperature, high salt, or the presence of an oil phase. At this time, the performance of the surfactant foam may be significantly reduced, which brings great benefits to the development and practical application of the system. Diff...

Claims

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Application Information

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IPC IPC(8): B01F17/00C09K23/00
CPCC09K23/018C09K23/00
Inventor 李英张雪洁
Owner SHANDONG UNIV
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