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Effect of solvent on electrical conductivity and gas sensitivity of PEDOT: PSS polymer composite films
Author(s) -
Hwang Jun Sung,
Oh Tae Hwan,
Kim Se Hyun,
Han Sung Soo,
Lee Sung Jun,
Lee Se Geun,
Lee Young Jae,
Jang Seung Soon
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.42628
Subject(s) - pedot:pss , composite number , materials science , solvent , polymer , sensitivity (control systems) , conductive polymer , conductivity , electrical resistivity and conductivity , polymer chemistry , chemical engineering , composite material , chemistry , organic chemistry , electronic engineering , electrical engineering , engineering
Poly(3,4‐ethylenedioxythiophene)/poly(styrene sulfonate) (PEDOT:PSS) was blended with polyethylene oxide (PEO) and polyvinyl alcohol (PVA) and composite film was cast. Additional solvents of dimethyl sulfoxide (DMSO) and ethylene glycol (EG) were mixed and their effects on electrical conductivity and structural changes were investigated. The electrical conductivity increased in response to the additional solvent, leading to an increase in the PEDOT ratio relative to the control. PEDOT:PSS/PEO composite film had a much higher electrical conductivity than PEDOT:PSS/PVA. When blended with PEO, the quinoid structure revealed by Raman spectroscopy increased relative to the PVA‐blended case, indicating higher electrical conductivity. The current–voltage response and gas sensitivity showed much better performance in PEDOT:PSS/PEO/DMSO composite film. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42628.