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Synthesis, Characteristics and Aliphatic Alcohol Sensing Behavior of Poly( m– aminophenol)/Sulfonic Acid‐Functionalized Multi‐Walled Carbon Nanotube Composite
Author(s) -
Verma Sushil K.,
Choudhury Arup,
Kar Pradip
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201700470
Subject(s) - nanocomposite , sulfonic acid , carbon nanotube , materials science , composite number , methanol , scanning electron microscope , alcohol , transmission electron microscopy , chemical engineering , surface modification , composite material , polymer chemistry , organic chemistry , nanotechnology , chemistry , engineering
The in‐situ synthesis and characteristics of sulfonic acid group functionalized multi‐walled carbon nanotubes incorporated poly( m ‐aminophenol) composite (PmAP/s‐MWCNT) has been investigated. The fabricated nanocomposite film was successfully exploited as aliphatic alcohol vapor sensor material. The amount of s‐MWCNT inside the PmAP matrix was optimized as about 2 wt% in terms of highest average conductivity achieved (3.2 × 10 −2 S/cm) for the composites due to induced site‐selective interaction between the conjugated PmAP chain and s‐MWCNT. The functionalization of MWCNT and the interfacial interaction in the nanocomposite was confirmed by spectroscopic analysis. The morphological analysis of the nanocomposite by Field emission scanning electron microscopy and transmission electron microscopy indicated the formation of PmAP layers (thickness ∼200 nm) on the surfaces of s‐MWCNTs. The nanocomposite sensor exhibited distinct features of the response curves and percent response values for different aliphatic alcohols especially for methanol and ethanol, which could be used as a basis for the selective detection of these pollutant vapors.