Durable superhydrophobic fabric for oil-water separation enabled by UV-induced modifier
Source abstract
Abstract
A novel surface modifier was developed by a simple method, in which n-octadecanethiol (OT) and divinyltetramethyldisilazane (DVTS) reacted via a one-step thiol–ene click chemistry. The prepared surface modifier OT-DVTS could be easily applied onto the surface of various substrates via dip-coating technique. After the cotton fabric was modified by OT-DVTS, the Fourier transform infrared and X-ray photoelectron spectra confirmed that OT-DVTS had been successfully grafted onto fabric surface. The resultant OT-DVTS@fabric surface exhibited a significant change from a smooth to a rough structure. Benefiting from synergistic effect of increased roughness and decreased surface energy, the OT-DVTS@fabric achieved superhydrophobic performance with a water contact angle of 154° and oil contact angle nearly 0°. When the OT-DVTS@fabric was used for separating oil-water mixture, even after 30 reuse cycles, the separation efficiency for water and oil remained above 99% and 91%, respectively. The measurement results revealed that OT-DVTS@fabric exhibited outstanding durability against irradiation, chemical solvents, high temperature, tape peeling-off, and abrasion, which should be attributed to the strong covalent bonding interaction between OT-DVTS and substrates. Therefore, this work provided a UV-induced, highly efficient strategy to prepare OT-DVTS surface modifier, which could endow substrates surface with durable hydrophobic performance.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Surface Modification and Superhydrophobicity · Polymer composites and self-healing · Polymer Surface Interaction Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Hangzhou Normal University Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Zhejiang Key Laboratory of Organosilicon Material Technology, College of Material, Chemistry and Chemical Engineering, , Hangzhou,
Funding
Department of Scientific and Technology of Zhejiang Province
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