pps proceeding - Abstract Preview
pps proceeding
Symposium: S08 - (General Session 8) Polymer Nanostructures & Nanocomposites
Poster Presentation
 
 

Preparation and characterization of thyme essential oil nanocapsules using halloysite nanocontainers for food packaging materials

Jang Si-hoon (1), Park No-hyung (1)*

(1) Korea Institute of Industrial Technology - Gyeonggi-do - Korea

Halloysite nanotubes (HNTs) have hollow tubular structure with about 15 nm internal and 50 nm outer diameters as natural nanomaterials. Because of tubular shape, HNTs loaded with various materials have been researched as functional nanocapsules. In this study, thyme oil could be loaded successfully in HNTs by vacuum pulling methods and capping both ends of HNTs or coating by layer-by-layer (LBL) process with charged polymers. Controlled releasable halloysite capsules can be obtained with both negatively and positively charged molecules due to negatively charged external surface and positively charged inner surface. Then, the nanocapsules were mixed with solvent for gravure printing and were applied in printing of food packaging materials. Transmission electron microscope (TEM) and scanning electron microscope (SEM) were adopted to characterize the morphology and distribution of the nanocapsules. Also, The release control of stability and dispersion were measured. The obtained results revealed that release period of treated HNTs were longer than that of untreated HNTs. The morphology of HNTs in printing surface indicated good degree of dispersion without agglomerations.