Research and Development of "Gelatin–Conductive Polymer" Composites for Electromagnetic Compatibility

A method has been developed for the production of gelatin-based polymer composites with introduced particles of conductive polymers. Flexible samples of composites with different polyaniline and PEDOT:PSS contents with a thickness of 0.2–0.4 mm were obtained. The frequency dependences of the complex permittivity and the electromagnetic wave absorption coefficient were investigated. The real part of the complex permittivity of composite films depends on the conductive polymer content and does not exceed 10 in the frequency range 10–1000 kHz. The electromagnetic wave absorption coefficient in the frequency range of 50–2000 MHz for the obtained composite films reaches 5 dB (three times the power). Thus, the developed polymer composite materials based on a dielectric binder with embedded particles of conductive polymers are promising for ensuring the electromagnetic compatibility of microelectronic devices.