Aerogel carrying active material and composite of hydrogel and the aerogel
View Patent ↗An aerogel carrying an active material, and a composite of a hydrogel and the aerogel are provided. The method for preparing the composite according to the present invention comprises the steps of preparing a plurality of aerogel particles having an active material in the pores, preparing a polymer solution in which a polymer is dissolved in a water-soluble solvent, preparing an aerogel/polymer dispersion by homogenizing after mixing the aerogel particles in the polymer solution, and preparing an aerogel/hydrogel composite carrier by mixing the dispersion with a crosslinking agent solution. According to the present invention, by producing a hydrogel composite in which a plurality of aerogel particles is distributed, a complex carrier in which oil and moisture can be carried simultaneously without any surfactant can be provided. Furthermore, a composite carrier having improved properties such as low density, high strength, high component content and stable desorption can be prepared.
1. A method of preparing an aerogel/hydrogel composite comprising:
preparing a plurality of aerogel particles including an aerogel particle having particle clusters and pores formed in a porous network of the particle clusters, and an active material supported in the pores for supplying fragrance;
preparing a polymer solution in which a polymer is dissolved in a water-soluble solvent;
mixing the plurality of aerogel particles into the polymer solution, and then homogenizing the mixture to prepare an aerogel/polymer dispersion; and
mixing the dispersion with a crosslinking agent solution to prepare an aerogel/hydrogel composite carrier,
wherein the aerogel particles are hybrid aerogel particles having a Si—CH 3 group and an OH group in addition to a Si—O—Si group.
2. The method according to claim 1 , wherein 1 to 10 parts by weight of the active material is mixed with 1 part by weight of the aerogel particles in the step of preparing the plurality of aerogel particles.
3. The method according to claim 1 , wherein the active material is a natural extract, a natural extract oil, an alcohol having 1 to 40 carbon atoms, an alkane or an organic compound having an ester functional group having 4 to 40 carbon atoms.
4. The method according to claim 1 , wherein the polymer is dissolved in the water-soluble solvent and forms a crosslink by the crosslinking agent in the crosslinking agent solution.
5. The method according to claim 1 , wherein 0.1 to 10 parts by weight of the aerogel particles is mixed with 10 part by weight of polymer solution.
6. The method according to claim 1 , wherein the aerogel/polymer dispersion is dripped into the crosslinking agent solution to form the carrier having a spherical shape when the aerogel/hydrogel composite carrier is prepared.
7. The method according to claim 6 , wherein the aerogel/hydrogel composite carrier includes the hydrogel having a three-dimensional network structure formed by crosslinking the polymer and the plurality of aerogel particles dispersed in the network structure.
8. An aerogel/hydrogel composite comprising:
a hydrogel having a three-dimensional network structure; and
a plurality of aerogel particles including an aerogel particle having particle clusters and pores formed in a porous network of the particle clusters, and an active material supported in the pores for supplying fragrance,
wherein the aerogel particle are hybrid aerogel particles having a Si—CH 3 group and an OH group in addition to a Si—O—Si group.
9. The aerogel/hydrogel composite according to claim 8 , wherein the active material is a natural extract, a natural extract oil, an alcohol having 1 to 40 carbon atoms, an alkane or an organic compound having an ester functional group having 4 to 40 carbon atoms.
10. The aerogel/hydrogel composite according to claim 9 , wherein the composite is a carrier having a spherical shape.
11. Aerogel comprising:
an aerogel particle having particle clusters and pores formed in a porous network of the particle clusters; and
an active material supported in the pores for supplying fragrance,
wherein the aerogel particle is a hybrid aerogel particle having a Si—CH 3 group and an OH group in addition to a Si—O—Si group.