Encapsulation of cyclamen aldehyde via miniemulsion polymerization

Encapsulation of cyclamen aldehyde(CA) was obtained via miniemulsion polymerization successfully in this paper. The influence of the reaction condition such as emulsifier content, the ratio of CA and poly(tert-butylacrylate) and hexadecane content on the average diameter, particle distribution index, encapsulation efficiency and fragrance content in nanocapsule of CA nanocapsule was investigated in detail. The structure of CA nanocapsule was determined by Fourier transform infrared spectrometry(FT-IR), transmission electron microscope(TEM) and gas chromatography(GC). FT-IR displayed that CA had been encapsulated into PtBA. TEM showed that the diameter of the spheric CA nanocapsule kept 100nm and dispersed even. The light color part was CA, the dark color part was PtBA. GC indicated that the fragrance strength released from the cotton fabric aromatized with CA after washing 10 times was decrease by 30. 17% in contrast to that without washing;the fragrance strength released from the cotton fabric aromatized with CA nanocapsule after washing 10 times was only declined by 8. 39% in contrast to that without washing. CA nanocapsule had the better fragrance sustained release property than CA.