Mussel-inspired chitosan modified superhydrophilic and underwater superoleophobic cotton fabric for efficient oil/water separation.

Carbohydrate Polymers
Meng WangJian-Bing Zeng

Abstract

Superhydrophilic and underwater superoleophobic textiles exhibit excellent oil/water separation performance but are limited by the poor stability and environmental incompatibility. Inspired by strong adhesion of marine mussels, we designed and fabricated a stable and eco-friendly superhydrophilic and underwater superoleophobic cotton fabric (CF) from all renewable resources through in-situ surface deposition of polydopamine (PDA) particles followed by adsorption of hydrophilic chitosan via dip coating at room temperature. The as-prepared superhydrophilic and underwater superoleophobic CF exhibited outstanding oil/water separation performance with separation efficiency and water flux higher than 99 % and 15,000 L m-2 h-1, respectively. Moreover, it not only showed excellent resistance to mechanical abrasion and ultrasound treatment but also had outstanding superwetting stability against acid/alkali/salt erosion. We believed that the eco-friendly superhydrophilic and underwater superoleophobic CF would exhibit great potential in oil/water separation especially under harsh conditions.

Citations

Jan 19, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·M E Mohamed, B A Abd-El-Nabey
Jul 3, 2021·International Journal of Biological Macromolecules·Xue-Qing ZhaoCheng Zhong
Aug 29, 2021·Polymers·Siegfried FürtauerHatem Abushammala
Sep 11, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Lei QiuWeimin Liu

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