【Abstract】 Poly(propargyl alcohol)(POHP) and poly(propargyl acetate)(PPAT) were prepared by using palladium acetylide catalysts [Pd(C CCH 2OR) 2(PPh 3) 2] (R=H,OC 2H 5) and doped with FeCl 3 or H 2SO 4 as humidity sensing materials. The doped polymers were found to have good humidity sensitivity as the impedance variation covered about two orders of magnitute (10 4~10 6 Ω) at RH% ranged from 11% to 96%. The effects of polymer structures on the humidity sensing behavior were compared.更多还原