121st General Meeting of the KCS

Type Poster Presentation
Area Material Chemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code MAT.P-375
Subject Comparison of Cinnamate-Intercalated Layered Double Hydroxides and Layered Rare Earth Hydroxides
Authors Bora Kang, Hyunsub Kim, Song-ho Byeon*
Department of Applied Chemistry, Kyung Hee University, Korea
Abstract Nowadays, people are becoming more conscious about their skin health due to lengthen exposure to UV radiation from the sunlight which causes melanoma and other skin-related diseases. However, many organic compounds are not appropriate for UV absorption because of their low stabilities to light, temperature, and oxygen, etc.. It is consequently imperative to find ways on how to stabilize these organic compounds and protect them from degradation. In this work, cinnamic acid was intercalated into layered inorganic lattices by ion-exchange method. Two groups of 2-dimensional inorganic materials were used as hosts, namely layered double hydroxides (LDHs) and layered rare earth hydroxides (LRHs). The exchange capacity and arrange mode of anions in the interlayer galleries of LDHs and LRHs depends on the net positive charge of their hydroxide layers. The similarity and difference in inclusion phenomena of cinnamate in the interlayer space of LDHs and LRHs and its release behavior were demonstrated in this study. Furthermore, PVA films containing cinnamate-intercalated LDHs and LRHs nanosheets were prepared in order to compare the UV absorption and photo-degradation behavior of cinnamate.
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