Nanodiamond Promotes Surfactant-Mediated Triglyceride Removal from a Hydrophobic Surface at or below Room Temperature
详细信息 查看全文
- 作者：Xianjin Cui ; Xianping Liu ; Andrew S. Tatton ; Steven P. Brown ; Haitao Ye ; Andrew Marsh
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2012
- 出版时间：June 27, 2012
- 年：2012
- 卷：4
- 期：6
- 页码：3225-3232
- 全文大小：498K
- 年卷期：v.4,no.6(June 27, 2012)
- ISSN：1944-8252
文摘
We demonstrate that ca. 5 nm nanodiamond particles dramatically improve triglyceride lipid removal from a hydrophobic surface at room temperature using either anionic or nonionic surfactants. We prepare nanodiamond鈥搒urfactant colloids, measure their stability by dynamic light scattering and use quartz crystal microbalance鈥揹issipation, a technique sensitive to surface mass, in order to compare their ability to remove surface鈥揵ound model triglyceride lipid with ionic and nonionic aqueous surfactants at 15鈥?5 掳C. Oxidized, reduced, 蠅-alkylcarboxylic acid, and 蠅-alkylamidoamine surface-modified adducts are prepared, and then characterized by techniques including 13C cross-polarization (CP) magic-angle spinning (MAS) NMR. Clear improvement in removal of triglyceride was observed in the presence of nanodiamond, even at 15 掳C, both with nanodiamond鈥搒urfactant colloids, and by prior nanoparticle deposition on interfacial lipid, showing that nanodiamonds are playing a crucial role in the enhancement of the detergency process, providing unique leads in the development of new approaches to low-temperature cleaning.