• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>NSTI Nanotechnology Conference and Trade Show(NSTI Nanotech 2005) vol.1; 20050508-12; Anaheim,CA(US) >Physicochemical Characterization of Nanosize Zinc Oxide and Titanium Dioxide used as UVR Sunscreen Agents in Cosmetic Formulations
【24h】

Physicochemical Characterization of Nanosize Zinc Oxide and Titanium Dioxide used as UVR Sunscreen Agents in Cosmetic Formulations

机译：化妆品配方中用作UVR防晒剂的纳米氧化锌和二氧化钛的理化特性

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The physical (particulate) sunscreen agents ZnO and TiO_2, are increasingly used to provide UV protection in a wide variety of cosmetic and personal care products. The particle size distribution (PSD) of each oxide directly impacts product performance in two critical ways. First is the UV attenuation efficiency. Second, cosmetically acceptable and aesthetically pleasing products must also be transparent (non-whitening) when applied to the skin. The actual PSD in the final sunscreen formulation is very dependent upon the method of preparation and especially the quality of the oxide dispersion in the particular cosmetic vehicle. ZnO and TiO_2 have their own chemical compatibility that must be recognized to obtain maximum performance. This requires a detailed knowledge of the particulate surface chemistry and how that relates to the other (chemical) components in the product. For example, the majority of titanias currently used in cosmetic applications have been surface modified. This results in a very wide, variation of surface chemistry that critically affects dispersibility, especially when formulating mixed oxide systems. All these factors will be reviewed and illustrated.
机译：物理（微粒）防晒剂ZnO和TiO_2越来越多地用于在各种化妆品和个人护理产品中提供紫外线防护。每种氧化物的粒径分布（PSD）以两种关键方式直接影响产品性能。首先是紫外线衰减效率。其次，在化妆品上可接受且在美学上令人愉悦的产品在应用于皮肤时也必须是透明的（非增白）。最终防晒剂配方中的实际PSD非常取决于制备方法，尤其取决于特定化妆品媒介物中氧化物分散体的质量。 ZnO和TiO_2具有自己的化学相容性，必须认识到它们才能获得最佳性能。这需要对颗粒表面化学物质以及与产品中其他（化学）成分之间的关​​系有详细的了解。例如，目前在化妆品应用中使用的大多数二氧化钛已经过表面改性。这会导致非常广泛的表面化学变化，严重影响分散性，尤其是在配制混合氧化物体系时。所有这些因素将进行审查和说明。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号