This study focused on the development of a composite dehumidification material based on polyvinyl alcohol (PVA)-modified poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). PEDOT:PSS is known for its high electrical conductivity, whereas PSS exhibits inherent moisture absorption properties. However, pure PEDOT:PSS films are mechanically fragile and are difficult to use as self- supporting membranes. To address this limitation, PVA was introduced as a structural reinforcement material. Five composite films with different PEDOT:PSS-to-PVA ratios were prepared, and their microstructures, mechanical strengths, electrical conductivities, and dehumidification properties were systematically evaluated. The experimental results identified a composite formulation with a good balance among electrical conductivity, moisture absorption, and structural stability. This lays the foundation for future studies on electrically driven dehumidification and material design.
Yang et al. (Wed,) studied this question.