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NTIS 바로가기한국포장학회지= Korean Journal of Packaging Science & Technology, v.23 no.2, 2017년, pp.67 - 74
이우석 (연세대학교 패키징학과) , 고성혁 (연세대학교 패키징학과)
In this work, the effects of nano
핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
나노 패키징은 무엇은 보호하는 역할을 하는가? | 나노 패키징은 기계적 강도, 차단성 및 항균성이 개선되어 식품의 맛, 향, 색, 식감 및 농도를 보호한다. 현재 응용 연구 또는 적용되고 있는 주요 나노 무기물질로는 은나노(AgNP, Silver nanoparticle), 나노클레이(Nanoclay), 나노 산화아연(Nano ZnO), 나노 이산화티타늄(Nano TiO2) 및 카본나노튜브(CNTs, Carbon nanotubes) 등이 보고되고 있다. | |
나노 물질의 정의는 무엇인가? | 7%의 성장률로 2020년에는 150억 달러에 이를 것으로 예상된다. 일반적으로 나노 물질은 100 nm 이하의 입자 크기를 갖는 물질로 정의되며2) 상대적으로 높은 비표면적과 고유의 물리적, 광학적 및 화학적 특성을 나타낸다. 이러한 나노 물질은 그 종류에 따라 소재의 유연성, 내구성, 내염성, 차단성 및 재활용성 등의 기본적인 특성을 개선시킬 목적으로 복합소재(composite)의 형태로 응용되고 있다. | |
나노클레이는 무엇을 통해 포장재의 가스 차단성을 늘리는가? | 8) Nanoclay와 CNTs의 경우 범용 열가소성 플라스틱에 첨가되어 균일하게 분포될 경우 플라스틱 분자의 분자유동성과 유연성을 변화시켜 열 및 기계적 특성을 효과적으로 개선시킨다. 특히, Nanoclay는 포장재를 투과하는 가스의 이동거리를 늘려 포장재의 가스 차단성을 증대시키는 것으로 알려져 있다.9,10) 나노 물질은 나노 물질이 갖는 높은 비표면적에 의해 동종의 마이크로 입자보다 더 우수한 반응성을 갖는다. |
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