Characterization of a self‐oscillating polymer with periodic soluble‐insoluble changes
Characterization of a self‐oscillating polymer with periodic soluble‐insoluble changes
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DOI：
10.1002/polb.21148
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发表时间：
2007-07
期刊：
影响因子：
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通讯作者：
M. Ueda;Y. Hara;T. Sakai;R. Yoshida;M. Takai;Yoshihiro Ito
中科院分区：
文献类型：
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作者：
M. Ueda;Y. Hara;T. Sakai;R. Yoshida;M. Takai;Yoshihiro Ito
合成了N-异丙基丙烯酰胺(NIPAAm)、Ru(Bpy)_3和N-琥珀酰亚胺基丙烯酸(NAS)的共聚物，研究了其在溶液中的自振性能。这种聚合物通过Belousov-Zhabotinsky(BZ)反应表现出浑浊度和粘度的自振荡。通过动态光散射和电化学测量研究了聚合物在振荡过程中的分子尺寸。在BZ反应过程中，分子大小和粘度均呈现周期性变化。通过数值计算研究了这种周期性变化的一种简单机制。
A copolymer of N-isopropylacrylamide (NIPAAm), ruthenium-complex (Ru(bpy) 3 ), and N-succinimidyl acrylic acid (NAS) was synthesized to investigate its selfoscillating properties in a solution. This polymer exhibits selfoscillation in turbidity and viscosity synchronized via a Belousov-Zhabotinsky (BZ) reaction. The molecular size of the polymer during oscillation was investigated by dynamic light scattering and electrochemical measurements. Both molecular size and viscosity exhibited periodic changes during the BZ reaction. A simple mechanism accounting for such periodic changes was investigated by numerical calculations.