Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, 830011, China; Center of Material Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China.
Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, 830011, China; Center of Material Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China.
Carbohydr Polym. 2020 Jul 15;240:116318. doi: 10.1016/j.carbpol.2020.116318. Epub 2020 Apr 20.
Cellulose is a natural material with dissolution-regeneration property and numerous hydrogen bonds in the molecule. By utilizing these properties, this paper reported the development of a multi-functional fabric consisting of cellulose and commercial cotton fabric. The morphology, mechanical and thermal properties along with the oil-water separation performance of the developed material were studied. The results showed that the cellulose dissolved in NaOH/urea solution was regenerated in a salt solution, and attached tightly onto the cotton fabric, forming a sandwich structure for the material. Such modification significantly enhanced the strength, thermal stability and hydrophilic performance of the fabrics. Interestingly, the prepared material exhibited a unique underwater oleophobic performance, and had the capability to separate highly emulsified oil-water mixtures. The relatively low cost for the material preparation, enhanced mechanical property and high separation performance distinguished the developed material a suitable candidate for the separation of emulsified oil from water in practical applications.
纤维素是一种具有溶解-再生性能和分子内大量氢键的天然材料。本文利用这些特性，开发了一种由纤维素和商业棉织物组成的多功能织物。研究了所开发材料的形态、力学和热性能以及油水分离性能。结果表明，纤维素在 NaOH/尿素溶液中溶解，在盐溶液中再生，并紧密附着在棉织物上，为材料形成三明治结构。这种改性显著提高了织物的强度、热稳定性和润湿性。有趣的是，所制备的材料表现出独特的水下疏油性，并且能够分离高度乳化的油水混合物。该材料制备成本相对较低，力学性能增强，分离性能高，使其成为实际应用中从水中分离乳化油的合适候选材料。
