Abstract
An organic flexible capacitor was prepared via a multilayer UV-curing process of an acrylic based formulation. The outermost conductive layers were obtained by adding CNTs to PEG-DA resin up to a percolation threshold, found to correspond in between 1 and 2 phr CNTs.The presence of the filler did not significantly influence the photopolymerization rate, while a slight decrease on final acrylic double bond conversion was observed. An increase of Tg values was measured for the films containing CNTs and attributed to an hindering of the polymer chain mobility. A flexible layer was anyway obtained in the presence of 2 phr CNTs, with a Tg value around −25 °C. The three-layer capacitors were electrically characterized, studying impedance module and phase of the system as a function of frequency. Capacitances values are in the range of the shelf standard available discrete components.
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