| 초록 |
Over the past decades, polymers have replaced conventional materials (metals, ceramics, paper) in packaging applications due to their functionality, lightweight, ease of processing, and low cost. 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). However, despite their enormous versatility, a limiting property of polymeric materials in food packaging is their inherent permeability to gases and vapors, including oxygen. In this work, the PVA modified silica materials with various contents and the other functional groups used to decrease the water vapor transmission rate (WVTR) and the oxygen transmission rate (OTR). |
