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Self-similar arrays of carbon nanotubes and nonwoven fibers with tunable surface wettability

: Nagy, K.; Rajput, K.G.; Tóth, I.Y.; Rao, P.V.K.; Sharma, S.; Kumar, V.; Rawal, A.; Kukovecz, A.


Materials letters 228 (2018), S.133-136
ISSN: 0167-577X
Fraunhofer ITWM ()

Self-similar materials can assist in the transition of hydrophobic to hydrophilic state in a well-controlled manner. Herein, we report an ensemble of carboxylic functionalized carbon nanotubes (CNTs) decorated on the self-similar nonwoven surface using a facile, scalable and inexpensive vacuum filtration process for tunable surface wettability. Increasing the amount of CNTs combined with the vacuum assisted nonwoven material reduced the apparent equilibrium contact angle systematically. A simple analytical model has been proposed to predict the apparent equilibrium contact angle by formulating a direct relationship with the structural parameters of CNTs and nonwoven materials. In general, a satisfactory agreement was observed between the theoretical and experimental apparent equilibrium contact angles of CNT decorated nonwoven materials.