Journal
APPLIED CLAY SCIENCE
Volume 48, Issue 3, Pages 349-357Publisher
ELSEVIER
DOI: 10.1016/j.clay.2010.01.005
Keywords
Ultraviolet radiation; Clay; Fe2O3
Funding
- Ministry of Education and Training of Viet Nam
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The potential of various clays including kaolin, smectite, mixed-layer series-dominated clay and mica-dominated clay to protect against ultraviolet (UV) radiation in the range 250-400 nm was examined. In order to understand the UV-protection abilities of the clays, properties of the clays were also characterized. The clays blocked UV radiation and bulk Fe2O3 content played a key role in the UV-protection properties, whereby the higher the bulk Fe2O3 content, the lower the UV-transmission level. However, UV-protection ability also depended on the expandability of the clay or the combination between clay mineral and mixed ointment. (C) 2010 Elsevier B.V. All rights reserved.
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