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Fabrication of Polyaniline: Nail/Spindle‐Shaped Morphology
Author(s) -
Leng Wenguang,
Zhou Shuxue,
Wu Limin
Publication year - 2011
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.201100150
Subject(s) - polyaniline , aniline , ammonium persulfate , oxidizing agent , polymer chemistry , morphology (biology) , aqueous solution , polyaniline nanofibers , chemical engineering , chemistry , materials science , polymer , organic chemistry , monomer , polymerization , biology , engineering , genetics
Nail/spindle‐shaped polyaniline is synthesized by chemically oxidizing aniline with ammonium persulfate in a near‐neutral aqueous medium using PVP as the stabilizing agent. The type of dispersing agent, APS content and aniline concentration have obvious impacts on the morphology of the resulting polyaniline. Typically, in the concentration ranges of 1.5–6 × 10 −4 M PVP and 0.02–0.05 M aniline and for molar ratios [APS]:[aniline] of 0.4:1 to 0.8:1, nail/spindle‐shaped polyaniline can be obtained. A possible mechanism is proposed to elucidate the formation process.