화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2019년 봄 (04/10 ~ 04/12, 부산컨벤션센터(BEXCO))
권호 44권 1호
발표분야 고분자가공/복합재료
제목 Crab-on-a-Tree: All Bio-Renewable, Optical-and-Radio Frequency Transparent Barrier Nanocoating for Food Packaging
초록 Plastic packaging effectively protects foods from mechanical, microbial, and chemical damage, but oxygen permeates these plastics to degrade foods. Improving the gas barrier usually requires metallic or halogenated polymeric coatings; however, both often cause environmental problems and block visible light and electromagnetic signals. We report a unique design of a highly flexible and visible light and radio wave transparent coating based on biomaterials exclusively. By taking advantages of the spray-assisted layer-by-layer assembly of cellulose nanofibers and chitin nanowhiskers, we achieved the OTR value less than 0.5 mLm-2day-1. The significant barrier properties are attributed to the synergetic interplay between the highly crystalline bio-nanomaterials and they were maintained even under various conditions. This “crab-on-a-tree” nanocoating holds high potential as a biocompatible and optical-and-digital transparent future packaging application.
저자 김태형1, Thang Hong Tran2, 황성연2, 박제영2, 오동엽2, 김병수3
소속 1UNIST, 2한국화학(연), 3연세대
키워드 cellulose nanofiber; chitin nanowhisker; layer-by-layer; gas barrier
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