Activation energy of the soluble-insoluble self-oscillation in an autonomous polymer chain

DOI

10.2991/icmmse-17.2017.2How to use a DOI?

Keywords

Self-oscillation, Ru(bpy))₃, BZ reaction, Polymer chain, Activation energy

Abstract

In this study, we report the activation energy of the optical self-oscillation for a polymer chain that consisted of N-isopropylacrylamide (NIPAAm) (25 wt%), the Ru catalyst (5 wt%) of the Belouzov-Zhabotinsky (BZ) reaction, and acrylamide-2-methylpropanesulfonic acid (AMPS) (75 wt%). The AMPS moiety in the polymer chain has a negative charge and works as a solubility control site in the self-oscillating polymer chain (poly(NIPAAm-co-Ru(bpy) ₃-co-AMPS)). The optical self-oscillation of the polymer chain at constant temperature was induced by the BZ reaction. In the BZ reaction, the Ru(bpy)₃ moiety in the polymer chain undergoes redox oscillation, and at the same time, the solubility of Ru(bpy)₃ changes periodically. Due to the cyclic redox change in the Ru(bpy) ₃ moiety, the polymer chain underwent soluble-insoluble self-oscillation. The period of the self-oscillation for the poly(NIPAAm-co-Ru(bpy) ₃-co-AMPS) decreased with increasing temperature, in accordance with the Arrhenius equation.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Tmonka Nakazumi
AU  - Yusuke Hara
PY  - 2017/04
DA  - 2017/04
TI  - Activation energy of the soluble-insoluble self-oscillation in an autonomous polymer chain
BT  - Proceedings of the Second International Conference on Mechanics, Materials and Structural Engineering (ICMMSE 2017)
PB  - Atlantis Press
SP  - 8
EP  - 12
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmse-17.2017.2
DO  - 10.2991/icmmse-17.2017.2
ID  - Nakazumi2017/04
ER  -