层状双氢氧化物插层阴离子表面活性剂/二苯甲酮作为防晒剂的潜在材料。
Layered double hydroxides intercalated with anionic surfactants/benzophenone as potential materials for sunscreens.
机构信息
CEPESQ-Research Centre of Applied Chemistry, Department of Chemistry, Federal University of Paraná, Curitiba, PR, Brazil.
出版信息
J Colloid Interface Sci. 2013 May 1;397:88-95. doi: 10.1016/j.jcis.2013.01.059. Epub 2013 Feb 12.
Layered double hydroxides intercalated with dodecylsulfate or dodecylbenzenesulfonate were synthesized by co-precipitation under alkaline conditions. After characterization by PXRD, FTIR, and TGA/DTA, the ZnxAl/SUR compounds were reacted with neutral benzophenone, using different procedures. The products obtained from benzophenone adsolubilization were investigated by PXRD, FTIR, and DRUV-Vis spectroscopy before and after exposure to UV radiation. In general, the content of adsolubilized benzophenone was small and depended on the synthetic procedure. The best results were achieved under microwave irradiation, which furnished 9.09 wt% adsolubilized benzophenone. The products presented good adsorption in the full UV region, from UVC to UVA, and good stability to UV radiation. They did not cause skin irritation in tests conducted on rabbits, which makes them good candidates for the development of a new generation of sunscreens.
通过在碱性条件下共沉淀合成了层状双氢氧化物，并用十二烷基硫酸盐或十二烷基苯磺酸盐插层。通过 PXRD、FTIR 和 TGA/DTA 进行表征后，将 ZnxAl/SUR 化合物与中性二苯甲酮在不同的程序下反应。通过 PXRD、FTIR 和 DRUV-Vis 光谱研究了在暴露于 UV 辐射前后从二苯甲酮吸附溶解中获得的产物。通常，吸附溶解的二苯甲酮的含量很小，并且取决于合成程序。在微波辐射下获得了最佳结果，其提供了 9.09wt%的吸附溶解的二苯甲酮。这些产物在从 UVC 到 UVA 的整个 UV 区域呈现出良好的吸附作用，并且对 UV 辐射具有良好的稳定性。在对兔子进行的测试中，它们没有引起皮肤刺激，这使得它们成为开发新一代防晒霜的良好候选者。
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