School of Materials Science and Engineering, Key Laboratory of Advanced Civil Materials of Ministry of Education, Tongji University, 201804, People's Republic of China.
School of Materials Science and Engineering, Key Laboratory of Advanced Civil Materials of Ministry of Education, Tongji University, 201804, People's Republic of China.
Carbohydr Polym. 2017 Oct 1;173:422-430. doi: 10.1016/j.carbpol.2017.06.009. Epub 2017 Jun 6.
Ethyl cellulose (EC), owing to its wide availability, environmental-friendliness, and intrinsic hydrophobicity/oleophilicity, was used as an absorbent material for the first time. The superhydrophobic magnetic EC sponges with low density and high porosity were facilely prepared via freeze-drying method. The superhydrophobicity and magnetism of the sponges were achieved by silanization EC with hexadecyltrimethoxysilane and mixing with ferroferric oxide (FeO) nanoparticles. The as-prepared magnetic silanized EC (MSEC) sponges showed stable superhydrophobicity (θ>150°, rolling contact angle: 7°) in several kinds of solutions. Furthermore, the sponges exhibited high separation efficiency and good mass absorption capacity for a wide variety of oils and organic solvents (37-51 times of their own weight). Benefitting from the robust superhydrophobicity and good self-cleaning property of the sponges, the absorption capacity could be well maintained upon repeated use, demonstrating the superior recyclability. These advantages made the sponges ideal absorbents for oil spillage cleanup.
乙基纤维素（EC）由于其广泛的可用性、环境友好性和固有疏水性/亲油性，首次被用作吸收材料。通过冷冻干燥法制备了具有低密度和高孔隙率的超疏水磁性 EC 海绵。通过用十六烷基三甲氧基硅烷对 EC 进行硅烷化处理并与氧化铁（FeO）纳米粒子混合，使海绵具有超疏水性和磁性。所制备的磁性硅烷化 EC（MSEC）海绵在多种溶液中表现出稳定的超疏水性（θ>150°，滚动接触角：7°）。此外，该海绵对各种油和有机溶剂具有高分离效率和好的质量吸收能力（自身重量的 37-51 倍）。由于海绵具有强大的超疏水性和良好的自清洁性能，因此在重复使用时吸收能力能够得到很好的保持，表现出卓越的可循环性。这些优点使海绵成为溢油清理的理想吸收剂。
