Development of a vapor phase polymerization method using a wet-on-wet process to coat polypyrrole on never-dried nanocellulose crystals for fabrication of compression strain sensor

Vapor-phase polymerization (VPP) of polypyrrole (PPy) is a versatile and simple form of surface restraint polymerization onto a variety of substrates; only the polymerization initiator (an oxidant) is adsorbed onto the surface. However, traditional VPP features substrate (film, foam and fabric) impregnation/coating with an oxidant, followed by short drying to evaporate excess solvent, and then pyrrole polymerization onto the oxidant coated...