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Amphipathic alginate with response to light and pH and stable pickering emulsion thereof

An alginate and emulsion technology, applied in the field of pickering emulsions, achieves the effects of large preparation throughput, easy to scale up production, and avoiding operation steps

Active Publication Date: 2019-02-12
HAINAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few reports on the application of modified Alg to pickering emulsions

Method used

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  • Amphipathic alginate with response to light and pH and stable pickering emulsion thereof
  • Amphipathic alginate with response to light and pH and stable pickering emulsion thereof
  • Amphipathic alginate with response to light and pH and stable pickering emulsion thereof

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Embodiment Construction

[0036] Referring to the accompanying drawings, the present invention will be further described in conjunction with specific embodiments, so as to better understand the present invention.

[0037] 1 Synthesis of host molecule Alg-β-CD

[0038] 1.1 Specific synthetic steps

[0039] Weigh 2.00 g of Alg into a round bottom flask, add 80 mL of distilled water, and dissolve it under mechanical stirring at room temperature for 6 h to obtain a homogeneous solution of sodium alginate (Alg) with a mass fraction of 2.5%, and adjust the solution with 0.5 mol / L HCl pH = 3.6, diluted with water to a mass fraction of 2%. Mono(6-amino-6-deoxy)-β-CD (1.37g, 1.3mmol), formaldehyde (1.8mmol) and cyclohexyl isonitrile (1.8mmol) were successively added to the above sodium alginate solution, mechanically Stir and react at room temperature for 24h. After the reaction, the reaction solution was diluted with water to 0.7 wt%, and dialyzed for 3 days using a dialysis bag with a molecular weight cut ...

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Abstract

The invention discloses amphipathic alginate with response to light and a pH and stable pickering emulsion thereof. The emulsion is prepared from an oil phase and a water phase, stabilizers of the emulsion are nano-silica, the host molecules alginate (Alg-beta-CD) and guest molecules Azo-PEG, a volume ratio of the oil phase to the water phase is 1 to (0.1 to 10), the concentration of the silica dispersed in the water phase is 2wt%, the concentration of the (Alg-beta-CD) dispersed in the water phase is 1 g / L, and the concentration of the Azo-PEG dispersed in the water phase is 2 g / L. The pickering emulsion is high in stability, and has pH responsiveness and light responsiveness, by adjusting the pH or illumination, controllable release of an internal phase medicine can be achieved, and meanwhile, a preparation method is simple in operation process, and has large preparation throughput so that scale-up production of the emulsion can be achieved more easily, and the emulsion has wide application in the fields of make-up, biology, pesticide drug delivery and the like, and very good application and popularization values.

Description

technical field [0001] The invention relates to a pickering emulsion, in particular to an amphiphilic alginate with light and pH response and its stable pickering emulsion. Background technique [0002] Pickering emulsion is a new type of emulsion system in which solid particles replace traditional surfactants. Such as figure 1 As shown, the stabilization mechanism of the emulsion is mainly through the adsorption of solid particles on the oil-water interface to form a single-layer or multi-layer structure of solid particles, thereby stabilizing the emulsion. [0003] Compared with emulsions stabilized by traditional surfactants, it has outstanding advantages: (1) less toxic and side effects on the human body; (2) reducing environmental pollution; (3) strong emulsion stability. Therefore, Pickering emulsion has very important research and application value in the fields of food, cosmetics and medicine. In recent decades, with the rapid development of modern technology, res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L71/02C08L5/04C08K3/36C08B37/04C08G65/337C08G65/333
CPCC08B37/0084C08G65/33396C08G65/337C08J3/03C08J2371/02C08J2405/04C08K3/36C08K2201/011
Inventor 李嘉诚冯玉红赵心宇余高波
Owner HAINAN UNIVERSITY
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