Preparation and characterization of biomimetic superhydrophobic expanded graphite/carbon nanotube/polymer composites

摘要

In this paper, we report a facial method for fabricating stable superhydrophobic films from expanded graphite (EG)/carbon nanotube (CNT)/polymer composites. This method possesses the advantages of being both simple and inexpensive as well as utilizing non-fluorine-containing compounds. The as-prepared EG/CNT/polymer composites exhibit a good superhydrophobicity with a high water contact angle (162??). A sliding angel of 6?? for a 6 ??L droplet indicates excellent non-sticking behavior. Furthermore, the superhydrophobic EG/CNT/polymer composites had excellent environmental stability with regard to both heating and organic solvent treatment in terms of the contact angle to water. Such superhydrophobic coatings have potential applications in microfluidic devices, liquid transportation, and nonwetting surfaces.