Microencapsulation technology has found a variety of applications in many areas such as pharmaceuticals, cosmetics, textiles, agriculture, and etc. Here we developed a novel microcapsule for encapsulation of phase change material and fragrance.The mixture of octadecane as phase change material and dementholized peppermint oil as fragrance was encapsulated by polyurea (PU) through interfacial polymerization of Isophorone diisocyanate (IPDI) and hexamethylenediamine (HMDA). Morphology and chemical structure of PU microcapsules were characterized by optical microscopy, scanning electron microscope (SEM) and FTIR. The thermal properties of microcapsules were studied by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Results show that the resulting PU microcapsules are spherical and rough. The mean size of PU microcapsules is about 7.0 �m and high latent heat storage density is 169.1 J/g. PU microcapsules exhibited a good thermal stability under 200?. PU microcapsules encapsulating octadecane and dementholized peppermint oil will find applications such as textile and garment, building materials, heat-transfer fluid and so on.

Preparation and characterization of phase change material and fragrance microcapsules

248th National Meeting (2014)

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