Essence microcapsule and preparation method thereof

Abstract

The invention discloses an essence microcapsule and a preparation method thereof. The essence microcapsule comprises a core material, a polymer layer, a wall material and antibacterial particles. The preparation method comprises the following steps of (1) dissolving a polymer into an organic solvent, adding the core material and mixing evenly to obtain a mixed solution; (2) dissolving a second colloid protective agent into water, adding the mixed solution obtained in the step (1) while stirring, raising the temperature to 10-15 DEG C higher than a boiling point of an organic solvent and carrying out heat preservation for 0.5-1h to obtain a polymer pre-coated core material; and (3) adding the wall material, mixing evenly, curing at 60-70 DEG C for 3-5h, filtering, drying and spraying a solution containing the antibacterial particles and drying. The essence microcapsule is adjustable in size and structure, is modified with the antibacterial particles on the surface, and is excellent in antibacterial effect; the microcapsule can be grafted and modified; and the microcapsule is endowed with a new function. The preparation method is good in universality, simple, fast and economical, and the core materials of various properties can be coated according to the requirements of different industries.

Description

technical field [0001] The invention relates to an essence microcapsule and a preparation method thereof. Background technique [0002] Microcapsules are microscopic containers or packages with polymeric walls. Microcapsule granulation technology is to embed and seal solid, liquid or gas in a microcapsule to become a solid particle product. At present, microcapsule technology has been widely used in daily chemicals, food industry, biomedicine, polymer material additives and other fields. [0003] The preparation methods of microcapsule products include chemical methods, physical methods and physicochemical methods. The existing preparation methods mainly have the following problems: 1) When the wall material is used to coat the target substance, it is difficult to completely coat the target substance, and the coating effect is not good; 2) Most of the microcapsules are prepared in the form of a suspension It exists in the form of microcapsules, and its particle size range...

AI Technical Summary

Problems solved by technology

The existing preparation methods mainly have the following problems: 1) When the wall material is used to coat the target substance, it is difficult to completely coat the target substance, and the coating effect is not good; 2) Most of the microcapsules are prepared in the form of a suspension It exists in the form of microcapsules, and its particle size range is mainly between 1 and 500 microns, and it is easy to coalesce, resulting in agglomeration of microcapsules and affecting the application of later products; 3) only for a certain type or a certain type The core material is effectively dispersed, but when covering other core materials with different properties, the core material and the wall material cannot be reasonably connected, and ultimately cannot be effectively encapsulated and stored stably, and the scope of use is very limited; 4) General protective colloids cannot Adjust the capsule wall strength of microcapsules according to demand; 5) Microcapsule products are susceptible to bacterial contamination

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