Activation Energy of Autonomous Polymer Chains with High LCST
A self-oscillating polymer chain consisting of N-ethylacrylamide (NEAAm) and a Ru catalyst of the BelousovZhabotinsky (BZ) reaction was prepared. The polymer chain underwent soluble-insoluble self-oscillation induced by the BZ reaction, originating from the differing solubility of the Ru moiety in the reduced and oxidized states. The amplitude of self-oscillation was small compared to that for the polymer chains prepared from N-Isopropylacrylamide (NIPAAm). The activation energy observed with the novel, NEAAm-based polymer chain was 68 kJ/mol, similar to that found with the NIPAAm-based polymer chain and normal (no Ru catalyst incorporated in the polymer) BZ reaction.
Jingtao Han, Xianghua Liu and Zhengyi Jiang
Y. Hara, "Activation Energy of Autonomous Polymer Chains with High LCST", Advanced Materials Research, Vols. 941-944, pp. 1212-1215, 2014