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A kind of raspberry type emulsion and its preparation method and application
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A technology of emulsion and raspberry, applied in the field of multiphase emulsion, can solve the problems such as difficulty in preparation of raspberry-type emulsion and no progress
Active Publication Date: 2022-04-19
WENZHOU INST UNIV OF CHINESE ACAD OF SCI
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Problems solved by technology
However, prior art research on raspberry-type emulsions has not progressed, and this is because the preparation of this structured emulsion needs to balance multiple factors such as interfacial tension, density, viscosity and interfacial stability of the three liquids, which makes raspberry Type emulsions are difficult to prepare
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[0046] The invention provides the preparation method of above-mentioned raspberry type emulsion, comprises the following steps:
[0047] Water, ethanol, castor oil, silicone oil, silicon dioxide powder and cationic surfactant are sheared and mixed to obtain a raspberry type emulsion; the rotational speed of said shearing and mixing is ≥2000r / min.
[0048] The present invention has no special requirements on the order of adding raw materials. In the present invention, the rotational speed of the shear mixing is ≥2000r / min, preferably 8000-15000r / min, more preferably 8000-12000r / min. In the present invention, when the shear mixing speed is lower than 2000r / min, the resulting mixed liquid will be phase-separated, and the raspberry-type emulsion cannot be obtained.
[0049] In the present invention, the temperature of the shear mixing is preferably 1-35°C, more preferably 10-30°C, and the time is preferably 40s.
[0050] The invention provides the application of the above-mentio...
Embodiment 1～5
[0053] The raw materials and shear mixing rates of Examples 1-5 are shown in Table 1.
[0054] The raw materials shown in Table 1 were placed in a reaction vessel, and shear-mixed at 25° C. for 40 s to obtain a raspberry-type emulsion.
Embodiment 1
[0057] The microstructure figure of embodiment 1 gained raspberry type emulsion is as figure 1 As shown, the actual picture is as figure 2 shown. figure 1 (a) and (b) are pictures under different magnifications respectively, (a) is a raspberry-like structure, (b) is a Janus structure. Depend on figure 1 In (a), it can be seen that the emulsion obtained in the present invention has a three-phase emulsion structure, and each emulsion droplet is composed of a large droplet and a plurality of small droplets, and the small droplets are randomly dispersed on the surface of the large droplet , a raspberry-like structure. Depend on figure 1 In (b), it can be seen that the raspberry-like emulsion is surrounded by the Janus structure, which stabilizes the overall structure. The Janus structure is very small, with a diameter between 1 and 20 μm.
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Abstract
The invention provides a raspberry type emulsion and its preparation method and application, belonging to the technical field of multiphase emulsion. In the invention, vegetable oil is used as the continuous phase, the silicone oil phase is used as the first dispersed phase, and the water phase is used as the second dispersed phase; wherein the water phase includes water, ethanol, and silicon dioxide powder dispersed in water and ethanol. In the present invention, the three liquids of vegetable oil, silicone oil and water are immiscible and have similar densities, and the viscosity difference between vegetable oil and silicone oil is relatively large, and there is strong interfacial tension between the vegetable oil and the water phase, which can attract cationic surfactants to form on the liquid interface. Dense protective layer, thus improving the stability of the emulsion. Ethanol and silica powder have strong hydrophilicity and can be used as water phase components. Among them, silica powder can increase the viscosity of the water phase, and ethanol can adjust the polarity of the water phase and adjust the surface properties of the silica powder. Thereby improving the interfacial stability of the emulsion.
Description
technical field [0001] The invention relates to the technical field of multiphase emulsions, in particular to a raspberry type emulsion and its preparation method and application. Background technique [0002] Almost all emulsion cosmetics currently on the market have a "water-in-oil" or "oil-in-water" structure, which contains only one dispersed phase and cannot coat functional substances with different solubility. Therefore, although cosmetics on the market are dazzling, their functions are relatively single. [0003] When the dispersed phase of the emulsion is increased from one phase to two phases, more functional substances can be transported and delivered through the droplets, making the original single product function diversified. For example, liquid foundation can have beauty functions such as moisturizing and anti-wrinkle, and even have drug functions such as freckle removal and anti-acne; shampoo and conditioner can also be combined into one to realize the functi...
Claims
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