title: Microencapsulation of Ascorbic Acid for Cosmetic by Utilizing Self-assembly of Phase Separated Polymer.
abstract: Micrometer-sized polymer particles encapsulated ascorbic acid (vitamin C; VC) were successfully prepared by the three types of the self-assembling method, those are, phase separation and self-assembly of added polymer at the oil-water interface in emulsion, microsuspension polymerization utilizing the self-assembling of phase separated polymer (SaPSeP) method, and their hybrid method. In the stability study at 50°C for 2 months, the three kinds of capsule particles exhibited effective protection of VC from the interaction with other components in cosmetic consisting of water-in-oil (W/O) emulsion. The encapsulated VC was easily released from the capsule particles by an excess of water. These encapsulation methods will be useful for the stabilization of water-soluble substances in cosmetic consisting of W/O emulsion.
authors.affiliation: Department of Chemistry, Kashiwara Senior High School, Higashiosaka University.
authors.forename: Shiro
authors.initials: S
authors.lastname: Nakai
authors.forename: Akito
authors.initials: A
authors.lastname: Nakai
authors.forename: Takashi
authors.initials: T
authors.lastname: Michida
mesh_terms: D001205:Ascorbic Acid / Q000737:chemistry*; D003358:Cosmetics / Q000737:chemistry* / Q000145:classification*; D004655:Emulsions / Q000138:chemical synthesis / Q000737:chemistry; D009821:Oils / Q000737:chemistry; D010316:Particle Size; D058105:Polymerization; D011108:Polymers / Q000737:chemistry*; D012995:Solubility; D013499:Surface Properties; D014867:Water / Q000737:chemistry
chemical_list: D003358:Cosmetics; D004655:Emulsions; D009821:Oils; D011108:Polymers; D014867:Water; D001205:Ascorbic Acid