Conductivity and EMI shielding efficiency of polypyrrole and metal compounds coated on (non) woven fabrics

We synthesized polypyrrole (PPy) and metal (AgPd) compounds coated on woven polyethylene teraphthalate (PET) and nonwoven polyester (PE) fabrics. PPy coated on PET or PE fabrics was chemically polymerized by using naphthalene sulfonic acid (NSA) as a dopant and electrochemically synthesized by using anthraquinon-2-sulfonic acid (AQSA) as a dopant. Temperature dependences o f de conductivity [sigma (dc)(T)] Of PPy-NSA/fabric and PPy-AQSA/fabric com plexes are compared. The electromagnetic interference (EMI) shielding effic iency (SE) of PPy/fabric complexes is in the range of 20 similar to 80 dB d epending on the thickness and conductivity.