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Received May 28, 2015
Accepted October 24, 2016
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Synthesis and characterization of polypyrrole doped by cage silsesquioxane with carboxyl groups

The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 214122 Wuxi, P. R. China
Korean Journal of Chemical Engineering, February 2017, 34(2), 470-475(6), 10.1007/s11814-016-0296-y
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Abstract

Cage silsesquioxane with carboxyl groups (POSS-COOH) was successfully synthesized, after which it was added to polypyrrole (PPy) as a dopant to produce the doped PPy (PPy/POSS-COOH) solution. The PPy/POSSCOOH composites were characterized by FTIR (Fourier transformation infrared spectroscopy), SEM (Scanning electron microscopy), TGA (Thermo-gravimetric analysis), CV (Cyclic voltammetry) and RL (Reflection loss). Compared to PPy without POSS-COOH (un-PPy), the conductivity of PPy/POSS-COOH composites could be improved dramatically, reaching up to 0.850 S/cm at 25 °C. Under N2 atmosphere, the residual rate of PPy/POSS-COOH was 68% at 700 °C, 14% higher than the one of un-PPy. Meanwhile, PPy/POSS-COOH had a reflection loss below - 8 dB over 9.35 to 11.20GHz, with a minimum value of - 10.32 dB at 10.54 GHz, thus demonstrating higher microwave absorption than un-PPy. This method may provide a facile route to produce doped conducting polymers with POSS-COOH.

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