Temperature-control aromatic double-layer microcapsule and preparation method thereof

Abstract

The invention discloses a temperature-control aromatic double-layer microcapsule and a preparation method thereof. The temperature-control aromatic double-layer microcapsule is prepared by the following steps: firstly, synthesizing an organic phase-change material microcapsule by using polymethyl methacrylate as an inner layer wall material through an emulsion polymerization method; then, fully mixing essence with the organic phase-change material microcapsule under high-speed stirring to uniformly distribute the essence on the surface of the organic phase-change material microcapsule to obtain an organic phase-change material microcapsule with adsorbed essence; finally, wrapping beta-cyclodextrin on the organic phase-change material microcapsule with adsorbed essence to obtain the temperature-control aromatic double-layer microcapsule with aromatic flavor and capable of regulating temperature. The temperature-control aromatic double-layer microcapsule prepared in the invention is environment-friendly, non-toxic, high in mechanical strength and good in heat resistance, and the organic phase-change material is entitled with pleasurable aromatic flavor while having a phase-change function, so that the application field of the organic phase-change material is broadened.

Description

technical field [0001] The invention relates to a double-layer microcapsule and a preparation method thereof, in particular to a double-layer microcapsule capable of releasing aroma and a temperature-regulating function and a preparation method thereof. Background technique [0002] Phase change material microcapsules (MEPCMs) are tiny "containers" containing phase change materials in the capsule core. As a composite material, it solves the volume change and leakage problems during the phase change of solid-liquid phase change materials and realizes phase change. The permanent immobilization of the material makes the core material isolated from the external environment and can resist the effects of oxygen, light, etc., thus making the use, storage and transportation of the phase change material more convenient. At the same time, the phase change material microcapsules provide a large heat transfer area to improve heat transfer, thereby expanding the application range of the...

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to propose a kind of temperature-controlled aromatic double-layer microcapsules, which can make the fragrance in a certain temperature range, aiming at the problem that the temperature change has a great influence on the slow-release speed of the essence microcapsules, which leads to the uneven fragrance released by it. Uniform release within