The bacterial adhesion and the formation of biofilm are natural and spontaneous processes. This phenomenon happens whatever the nature of bacterium, surrounding fluid and receiving substrate.Bacterial adhesion depends on physical chemistry interactions between the bacteria and the receiving substrate. Tamada and Ikada showed that the nature of substrate and its characteristics of surface, such as superhydrophobic or superhydrophilic character, can affect the development of a biofilm, in order to obtain 'anti-bioadhesive' surfaces.1 In case of superhydrophobic surfaces, the wetting is reduced which may favor the 'sliding' of the aqueous medium on the surface. Hence, its ability to interact with bacteria may also be reduced. This phenomenon is associated with the chemical functionality of the coating and its roughness.For an anti-bioadhesive application, the control of the roughness is very important. In fact, the presence of asperities larger than bacteria favors their mechanical bonding and thus, the increasing of bacterial adhesion. The size of bacteria being about 1�m, it is necessary to develop superhydrophobic surfaces with nano-scale roughness.Among the methods allowing to structure and functionalize surfaces in order to make them superhydrophobic, electropolymerization is a simple, inexpensive and perfectly manageable.2Here, we present the work realized in designing surfaces by electrodeposition with a potential anti-bioadhesive application.Figure:  Superhydrophobic polymer with nano-scale roughness  References(1) Tamada, Y.; Ikada Y.; Polymer, 1993  , 34, 10,2208-2212.(2) Darmanin, T.; Guittard, F.; J. Am. Chem. Soc., 2009  , 131, 7928-7933.

Superhydrophobic and antibioadhesive surface with nanoscale roughness

246th National Meeting (2013)

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