Superhydrophobicity determines the buoyancy performance of kapok fiber aggregates
Superhydrophobicity determines the buoyancy performance of kapok fiber aggregates
复制标题
超疏水性决定木棉纤维聚集体的浮力性能
DOI：
10.1016/j.apsusc.2012.11.153
复制
发表时间：
2013-02
影响因子：
6.7
通讯作者：
Xu, Jian
中科院分区：
文献类型：
--
作者：
Zhang, Xiaoyan;Fu, Wangyang;Duan, Chunting;Xiao, Hong;Shi, Meiwu;Zhao, Ning;Xu, Jian
超疏水性通常被认为是对自清洁应用具有重要影响的表面性质。在这里，我们有趣地表明，超疏水性是紧密相连的木棉纤维聚集体，一种天然材料，具有超疏水性和非常高的孔隙率的体积浮力性能。首先，我们确定了单根木棉纤维的超疏水性，这可以归因于其微纳米二元结构（MNBS）和表面覆盖的薄疏水石蜡层。其次，基于经典的毛细管和芯吸理论，木棉纤维聚集体的浮力性能可以建模，我们证明，它们的浮力性能实际上是由单个木棉纤维的超疏水性决定的。我们的研究结果还表明，使用木棉纤维聚集体作为最轻的天然浮力的最佳密度为0.015gcm− 3。
Superhydrophobicity is commonly regarded as a surface property that has important consequences for self-cleaning applications. Here we show interestingly that the superhydrophobicity is closely connected to the bulk buoyancy performance of kapok fiber aggregates, a natural material endowed with superhydrophobicity and extraordinary high porosity. First of all, we have determined the superhydrophobicity of a single kapok fiber, which can be ascribed to its micro-nano-binary structure (MNBS) and the thin hydrophobic paraffinic wax layer covered on the surface. Second, based on classic capillary and wicking theory, the buoyancy performance of the kapok fiber aggregates can be modeled and we demonstrate that their buoyancy performance is actually determined by the superhydrophobicity of individual kapok fibers. Our results also suggest an optimized density ∼0.015gcm−3for using kapok fiber aggregates as the lightest natural buoyancy.
登录
查看更多内容
影响因子：
--
作者：
Li, Jing;Shi, Lei;Liu, Weimin
通讯作者：
Liu, Weimin
影响因子：
--
作者：
Park, Yong-Bum;Im, Hwon;Choi, Yang-Kyu
通讯作者：
Choi, Yang-Kyu
影响因子：
3.5
作者：
C. Venkata Prasad;K. Rao;G. V. Reddy;T. Rani;B. Yerriswamy;M. Subha
通讯作者：
C. Venkata Prasad;K. Rao;G. V. Reddy;T. Rani;B. Yerriswamy;M. Subha
影响因子：
4.8
作者：
Md Mainul Islam;H. Kim
通讯作者：
Md Mainul Islam;H. Kim
影响因子：
6.7
作者：
Yan Zhao;Yanwei Tang;Xungai Wang;Tong Lin
通讯作者：
Yan Zhao;Yanwei Tang;Xungai Wang;Tong Lin