title: Low-cost, acid/alkaline-resistant, and fluorine-free superhydrophobic fabric coating from onionlike carbon microspheres converted from waste polyethylene terephthalate.
abstract: Onionlike carbon microspheres composed of many nanoflakes have been prepared by pyrolyzing waste polyethylene terephthalate in supercritical carbon dioxide at 650 °C for 3 h followed by subsequent vacuum annealing at 1500 °C for 0.5 h. The obtained onionlike carbon microspheres have very high surface roughness and exhibit unique hydrophobic properties. Considering their structural similarities with a lotus leaf, we further developed a low-cost, acid/alkaline-resistant, and fluorine-free superhydrophobic coating strategy on fabrics by employing the onionlike carbon microspheres and polydimethylsiloxane as raw materials. This provides a novel technique to convert waste polyethylene terephthalate to valuable carbon materials. At the same time, we demonstrate a novel application direction of carbon materials by taking advantage of their unique structural properties. The combination of recycling waste solid materials as carbon feedstock for valuable carbon material production, with the generation of highly value-added products such as superhydrophobic fabrics, may provide a feasible solution for sustainable solid waste treatment.
authors: Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China , Hefei, 230026, China.
authors: Haibo
authors: H
authors: Hu
authors: Lei
authors: L
authors: Gao
authors: Changle
authors: C
authors: Chen
authors: Qianwang
authors: Q
authors: Chen
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry*; D004785:Environmental Pollutants / Q000737:chemistry*; D008863:Microspheres; D011093:Polyethylene Terephthalates / Q000737:chemistry*; D059027:Recycling / Q000379:methods
chemical_list: D004785:Environmental Pollutants; D011093:Polyethylene Terephthalates; D002245:Carbon Dioxide; D002244:Carbon