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Polyaniline Morphology and Detectable Intermediate Aggregates
Author(s) -
Ding Zhongfen,
Yang Dali,
Currier Robert P.,
Obrey Stephen J.,
Zhao Yusheng
Publication year - 2010
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.200900444
Subject(s) - polyaniline , morphology (biology) , nanomaterials , aniline , chemistry , chemical engineering , homogeneous , polymer chemistry , materials science , polymer , nanotechnology , organic chemistry , polymerization , thermodynamics , physics , biology , engineering , genetics
Formation of detectable intermediate aggregates is found to affect the morphologies of PANI nanomaterials, leading to either tubular or rod structures with striated growth and rough surfaces. By simply varying the ratio of initial proton and aniline concentration, a wide range of product morphologies can be synthesized. The intermediates form visible aggregates that can be separated by centrifugation or filtration. In addition to UV‐Vis monitoring of the intermediate aggregates, OCP and pH measurements are used to monitor the reaction process. GPC measurements show that the corresponding final products formed typically are not homogeneous. The correlation of intermediates formation and aggregation with product morphology suggests a route to controlled synthesis of PANI nanomaterials.