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Superhydrophobic Mats of Polymer‐Derived Ceramic Fibers

2008; Wiley; Volume: 91; Issue: 8 Linguagem: Inglês

10.1111/j.1551-2916.2008.02500.x

1551-2916

Sourangsu Sarkar, Anindarupa Chunder, Weifeng Fei, Linan An, Lei Zhai,

Silicone and Siloxane Chemistry

Solid preceramic polyaluminasilazane was synthesized through the reaction between liquid cyclosilazane and aluminum tri‐sec‐butoxide at 160°C. Electrospinning of polyaluminasilazane/polyethyleneoxide (1/0.0001 mass ratio) in chloroform solutions generated smooth fibers while the electrospun fibers from the chloroform/ N,N ‐dimethylformamide solutions had submicrometer structures on the fiber surfaces. Smooth and rough SiCNO ceramic fibers were obtained by the pyrolysis of the green fibers with an 80% yield. Superhydrophobic mats of ceramic fibers were fabricated via a chemical vapor deposition of perfluorosilane onto the rough fibers. These superhydrophobic mats possess good chemical and thermal stability.