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UV-protection characteristics of some clays

Hoang-Minh T. Hanoi University of Science, Vietnam National University, Hanoi, Viet Nam|
Le T.L. Institute of Geological Sciences, Vietnamese Academy of Science and Technology, Viet Nam|

Applied Clay Science Số 3, năm 2010 (Tập 48, trang 349-357)

ISSN: 1691317

ISSN: 1691317

DOI: 10.1016/j.clay.2010.01.005

Tài liệu thuộc danh mục: Scopus



Từ khóa: Expandability; Fe2O3; Smectites; Ultra-violet; UV radiation; UV transmission; UV-protection; Fabrics; Kaolin; Mica; Silicate minerals; Solar radiation; Ultraviolet radiation; Clay; clay mineral; expansion; iron oxide; kaolin; mica; radiation exposure; smectite; ultraviolet radiation
Tóm tắt tiếng anh
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 250-400nm 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. � 2010 Elsevier B.V.

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