State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China.
State Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
Carbohydr Polym. 2015 Nov 20;133:493-6. doi: 10.1016/j.carbpol.2015.07.043. Epub 2015 Jul 19.
Water striders can walk on water. To mimic this function, a porous membrane consisted of bamboo cellulose fiber was hybridized with Ag/Ag2O nanoparticles through a facile in situ method to produce water repellent and well-ventilated materials. Herein, we report the sole surface roughness created by Ag/Ag2O nanoparticles could render the membrane a water contact angle (CA) of 140±3.0°. When floating on water, the hybrid membrane was able to support a heavy load more than 10 times the weight of the membrane itself. Additionally, this membrane demonstrated capabilities for oil sampling under water or oil/water separation and strong antibacterial activity against Escherichia coli. Thus we foresee that this novel hybrid membrane can be potentially utilized as drag-reducing, gas permeable and antibiotic substrates for constructing miniature aquatic devices.
水黾可以在水面上行走。为了模仿这一功能，通过一种简便的原位方法，将由竹纤维素纤维组成的多孔膜与 Ag/Ag2O 纳米粒子杂交，从而产生具有防水透气功能的材料。在此，我们报告了由 Ag/Ag2O 纳米粒子产生的单一表面粗糙度可以使膜的水接触角（CA）达到 140±3.0°。当漂浮在水面上时，该复合膜能够支撑超过自身重量 10 倍的重物。此外，该膜还具有在水下进行采油、油水分离以及对大肠杆菌表现出强烈抗菌活性的能力。因此，我们预计这种新型复合膜可作为构建微型水上装置的减阻、透气和抗菌基底材料。
