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Polyaniline doped with α, ω‐alkanedisulfonic acids: preparation and characterization
Author(s) -
Bharti Sneh,
Jacob Josemon,
Ghosh Anup K
Publication year - 2013
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4365
Subject(s) - polyaniline , dopant , doping , thermal stability , materials science , polymer , conductive polymer , chemical engineering , polymer chemistry , polyaniline nanofibers , organic chemistry , chemistry , composite material , polymerization , optoelectronics , engineering
The use of α, ω‐alkanedisulfonic acid, HO 3 S(CH 2 ) n SO 3 H ( n = 1, 4, 6 and 12), as a dopant for polyaniline (PANi) was investigated. This series of disulfonic acids with varying chain lengths were synthesized and used in the doping of PANi. The doped polymers showed conductivity in the range 10 −2 to 10 −1 S cm −1 . Thermal studies showed that the doped polymers, depending on the chain length of α,ω‐alkanedisulfonic acid, were stable up to ca 300 °C and the thermal stability decreased with increasing dopant chain length. The thermal stability of α,ω‐alkanedisulfonic acid‐doped PANi was higher than that of alkanesulfonic acid‐doped PANi which typically degrades around 250 °C, suggesting a moderately broader processing window for α,ω‐alkanedisulfonic acid‐doped PANi for blending with other thermoplastics. Copyright © 2012 Society of Chemical Industry