| 초록 |
Polymeric gas barrier films play a role in pharmaceuticals, flexible electronics (organic light-emitting diode, liquid–crystal display, solar cells), and food packaging industries. The use of synthetic polymers is ubiquitous in food packaging where they provide mechanical, chemical, and microbial protection from the environment and allow product display. Polymers most frequently used in food packaging are polyethylene, polypropylene, polystyrene, polyvinyl chloride (PVC), and polyethylene terephthalate (PET). But their gas barrier properties are poor; this disadvantage limits their application in food packaging. Enhancing these poor properties would be a challenge. In this work, the PVA modified silica materials with different synthetic method used to decrease the water vapor transmission rate (WVTR) and the oxygen transmission rate (OTR). The properties of films characterized by the means of TGA, DSC and UV-Vis. And moisture barrier property was measured according to the ASTM D 3985. |
