期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 209, 期 -, 页码 279-289出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2022.04.007
关键词
Cotton fabric; Chitosan & polydopamine hydrogel; Underwater superoleophobicity
资金
- National Natural Science Foundation of China [U1833202]
- Fundamental and Frontier Research Project of Chongqing [cstc2019jcyjjqX0023]
- Chongqing Talent Plan for Young Top-Notch Talents [CQYC2021059217]
A fully biobased and mussel-inspired underwater superoleophobic hydrogel coated cotton fabric was prepared by surface coating and subsequent oxidation polymerization of chitosan & dopamine mixtures. The obtained material showed superhydrophilicity and underwater superoleophobicity, allowing for efficient oil/water separation with excellent resistance against harsh conditions.
Superhydrophilic and underwater superoleophobic materials exhibit excellent oil/water separation performance but are usually fabricated from nonrenewable and nondegradable feedstocks and thus would cause secondary pollution after use. Herein, we report a fully biobased and mussel-inspired underwater superoleophobic hydrogel coated cotton fabric (CF) prepared by surface coating and subsequent oxidation polymerization of chitosan & dopamine mixtures. The obtained chitosan & polydopamine hydrogel coated CF (CS&PDA/CF) showed superhydrophilicity and underwater superoleophobicity, due to the formed rough surface structure with hydrophilic complex hydrogel. The CS&PDA/CF exhibited excellent oil/water separation performance with separation efficiency higher than 99.5% for various oil/water mixtures. Moreover, the CS&PDA/CF showed excellent resistance against various harsh conditions such as boiling water, ultrasonication, and concentrated salt solution, due to the mussel-inspired strong adhesion stabilized structure and morphology. We believe that the fully biobased and mussel-inspired underwater superoleophobic cotton fabric shows great potential as an eco-friendly and high efficient oil/water separation material.
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