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Control of Polyaniline Particle Shapes
Author(s) -
Jung WooHyuk,
Lee Young Moo,
Jo NamJu,
Lee JangOo
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200800062
Subject(s) - polyaniline , aniline , polymerization , xylene , polymer chemistry , chemical engineering , materials science , particle (ecology) , conductivity , spectroscopy , scanning electron microscope , chemistry , composite material , organic chemistry , polymer , benzene , oceanography , physics , quantum mechanics , engineering , geology
Needle‐like poly(aniline p ‐toluenesulfonic acid) complex aggregates were synthesized by oxidative polymerization, yielding conductivities of up to 3 S · cm −1 and maximum aspect ratios of 26. Rod‐like aggregates as precursors to be developed into needle‐like aggregates were obtained with 1 to 2 h APS addition time at 15 °C. Flake‐like polyanilines were prepared at −2 or +20 °C with 1.9 to 2.5 h of APS addition time, giving aspect ratios of 2 to 10. Plate‐like polyaniline aggregates emerged when xylene was added, and an optimum xylene concentration was 15 vol.‐%, giving 1.3 S · cm −1 conductivity. The polyanilines were characterized by optical microscopy, SEM and UV‐vis/NIR spectroscopy.