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The Morphological and Capacitance Characteristics of A Novel Brush‐like Polymer Containing Polyaniline Segment
Author(s) -
Wang Lin,
Muslim Arzugul,
Lan Haidie,
Mamat Milangul
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202000718
Subject(s) - polyaniline , materials science , cyclic voltammetry , polymer chemistry , polymerization , capacitance , dielectric spectroscopy , polymer , particle size , transmission electron microscopy , chain transfer , chemical engineering , dispersity , acrylic acid , electrochemistry , radical polymerization , analytical chemistry (journal) , copolymer , chemistry , composite material , nanotechnology , electrode , organic chemistry , engineering
The brush‐like polymer composed of poly(acrylic acid)‐block‐grafted polyaniline (PAA 42 ‐ b ‐PANI 30 ‐ g ‐PANI m , marked as PAA 42 ‐PANI x ) with longer conjugate chain and good capacitance characteristics was synthesized through the combination of Reversible Addition‐Fragmentation Chain Transfer (RAFT) polymerization and free radical polymerization. The structure of the obtained product was characterized with 1 H‐NMR and FT‐IR. Additionally, the morphology and particle size distribution of PAA 42 ‐PANI x ultrasonically dispersed in ethanol was characterized with transmission electron microscopy. Through cyclic voltammetry (CV), chronopotentiometry and electrochemical impedance spectroscopy (EIS), the electrochemical properties of the product were analyzed. The results showed that PAA 42 ‐ b ‐PANI x was a vesicle‐like particle with smaller size, uniform size and uniform morphology distribution, it has the mean particle size of only 38 nm. The final product had good peseudocapacitance, its specific capacitance reached to 1051.51 F⋅g −1 at the current density of 3 A⋅g −1 .