A kind of titanium dioxide/seaweed polysaccharide composite nanoparticle and its preparation method and application

A technology of composite nanoparticles and seaweed polysaccharide, applied in cosmetic preparations, cosmetics, pharmaceutical formulations, etc., can solve the problems of strong photochemical catalytic activity, poor weather resistance, easy aggregation, etc. Good results
CN107582422BActive Publication Date: 2019-10-25广东名臣日化有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
广东名臣日化有限公司
Publication Date
2019-10-25

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Abstract

The invention discloses titanium dioxide / algal polysaccharide composite nanometer particles and a preparation method and application thereof. The method comprises: dissolving algal polysaccharide in water, adding a nanometer titanium dioxide ethanol suspension, performing uniform mixing, adjusting the pH of the system to be in arrange of 2-7, performing a reaction through ultraviolet lamp irradiation, and after the reaction is over, performing thick liquid separation and drying to obtain titanium dioxide / algal polysaccharide composite nanometer particles. The nanometer particles are low in manufacture cost, the size distribution of nanometer particles is centralized, and the dispersion performance of particles is good. Compatibility between the nanometer particles and an oil phase is improved, so that the nanometer particles can be applied to cosmetics, especially sun-screening products, and can obviously improve the ultraviolet-resistance of the products. Algal polysaccharide in the nanometer particles and nanometer titanium dioxide with photochemical catalytic activity undergo a high-activity free radical reaction. The damage of free radicals to the skin is prevented, and the defect that nanometer titanium dioxide is taken as a sun-screening agent itself is overcome, and the product performance is improved.
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Description

technical field

[0001] The invention belongs to the technical field of composite nanoparticles, and in particular relates to a titanium dioxide / seaweed polysaccharide composite nanoparticle and its preparation method and application. Background technique

[0002] In recent decades, with the destruction of the atmospheric ozone layer, the amount of ultraviolet rays in sunlight reaching the earth's surface has increased rapidly. As people's awareness of the dangers of excessive ultraviolet radiation is deepening, the use of sunscreen and skin care products is also increasing. Among all kinds of sunscreens, the inorganic sunscreen-nano-titanium dioxide has good ultraviolet light absorption and scattering effect. Compared with organic sunscreens, it has the advantages of high safety, good stability, high transparency, and low irritation, and has been widely used. .

[0003] However, due to the small particle size (1-100nm) of nano-titanium dioxide, it is in a thermodynamically...

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
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