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Preparation and properties of conducting arachidic acid/polypyrrole composite langmuir–blodgett films
Author(s) -
Park Yun Heum,
Park Seong Yoon,
Nam Sung Woo,
Park Chong Rae,
Kim Young Jun
Publication year - 1996
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/(sici)1097-4628(19960509)60:6<865::aid-app9>3.0.co;2-h
Subject(s) - arachidic acid , polypyrrole , materials science , composite number , conductivity , ferric , scanning electron microscope , chloride , analytical chemistry (journal) , conductive polymer , fourier transform infrared spectroscopy , polymer chemistry , chemical engineering , langmuir–blodgett film , composite material , chemistry , polymer , organic chemistry , monolayer , nanotechnology , engineering , metallurgy , polymerization
Electrically conducting arachidic acid/polypyrrole (PPy) composite films were prepared by exposing the arachidic acid LB films containing ferric chloride to pyrrole vapor. The optimum conditions to deposit matrix LB film were the subphase temperature of 23–25°C, pH of 6.0 and ferric chloride concentration of 5.0 × 10 −5 M . The formation of PPy in the arachidic acid matrix LB films was confirmed by UV‐visible spectra, FTIR spectra, and scanning electron micrographs. The average thickness of the composite LB films prepared at 0°C was 1525 Å. The composite films prepared at lower temperatures have more uniform surface and exhibit higher electrical conductivity than the films prepared at higher temperatures do. The in‐plain conductivity and the transverse conductivity of the composite film were 10 −3 −10 −2 S/cm and 10 −6 S/cm, respectively, and, thus, the conductivity anisotropy was about 10 3 © 1996 John Wiley & Sons, Inc.