Abstract
216 The surface of PTFE is known to be the most hydrophobic among polymer materials [1]. The con tact angle (of water) is ≥120° [2]; however, low tem perature plasma treatment can substantially alter the contact properties of polytetrafluoroethylene [3, 4]. Earlier, we studied the surface modification of PTFE films in dc discharge [2] and showed that such a treat ment can result in substantially lower values of the contact angle (θ) and higher values of the work of adhesion and surface energy as compared with other methods of modification of this polymer. For exam ple, θ of water was 33° or 49° after modification at the anode and cathode, respectively, and the total surface energy increased from 13.18 to 61.5 or 50.7 mJ/m2, respectively. These findings open a possibility for resolving the applied problem of manufacturing mul tilayer composite materials, including nanosized metal layers and thin PTFE films, which is important for electrical engineering and electronics.
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