Nonthermal Plasma Polymerization Coating on Aramid Surfaces for Durable Omniphobicity

Durable superomniphobic textiles, including self-cleaning, protective clothing, and liquid separation, are beneficial for their practical applications. Nonthermal plasma polymerization of environmentally friendly C6 fluorine was coated, and a durable omniphobic aramid fabric was achieved. The fabric became water and oil repellent with an elevated static water contact angle of (\textgreater 170 \textdegree ). As tested by the water spray AATCC test and hydrocarbon resistance test, the as-prepared fabric gained 100\textdegree (ISO5) and grade number 4 respectively. Compared to directly coated aramid fabric, its water contact angle remained stable above 170\textdegree , and its AATCC water/oil repellent separately was two grades higher after 10 washing cycles display improved washing durability. Surface techniques indicated that the durable superomniphobicity can be related to the plasma introduction of reactive polar groups like O$=$C-O on the fibre surface, which induces more adsorption and chemical graft of the C6 copolymer. -keywords Nonthermal plasma polymerization; Aramid fabric; Superomniphobicity; Washing durability