Open AccessPreparation of poly( o ‐phenylenediamine) nanoparticles with hydrolysed PEO 45 ‐ b ‐P t BA 35 as template and its electrochemical properties
Author(s) -
Lan Haidie,
Muslim Arzugul,
Wang Lin
Publication year - 2020
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2019.0636
Subject(s) - hydrolysis , electrochemistry , ethylene oxide , materials science , nanoparticle , particle size , copolymer , degree of polymerization , oxide , polymer chemistry , polymerization , chemistry , chemical engineering , electrode , organic chemistry , nanotechnology , polymer , composite material , engineering
Amphiphilic block copolymer poly(ethylene oxide)‐ b ‐poly(t ert ‐butyl acrylate) (PEO 45 ‐ b ‐P t BA 35 ) from atom transfer radical polymerisation was hydrolysed to varying degrees through adjusting hydrolysis time. And the hydrolysis product poly(ethylene oxide)‐b‐poly(acrylic acid) (PEO 45 ‐ b ‐PAA 35 ) was obtained and used as a template to synthesise nanostructured poly( o ‐phenylenediamine) (P o PD). The influence of hydrolysis degrees of PEO 45 ‐ b ‐PAA 35 on the size and electrochemical properties of P o PD was investigated. Results showed that the P o PD particles have uniform sizes, and their size could be tuned with the hydrolysis degree of PEO 45 ‐ b ‐PAA 35 . The average diameter and length of P o PD were less than 86 and 135 nm, and the size of these particles was increased with the increase of hydrolysis degree of PEO 45 ‐ b ‐PAA 35 . Electrochemical characterisation proves that the particle with a smaller size had a better electrochemical activity. When the hydrolysis time was 12 h, the PoPD had the best specific capacitance compared with other samples. The discharge specific capacitance calculated by chronopotentiometric test of this sample is reached 809 F·g −1 at the current density of 0.5 A·g −1 .