Reduction kinetics of hydrogen ion immobilized electrostatically on polystyrene latex
Reduction kinetics of hydrogen ion immobilized electrostatically on polystyrene latex
复制标题
聚苯乙烯乳胶静电固定氢离子的还原动力学
DOI：
10.1016/s1388-2481(99)00013-2
复制
发表时间：
1999
影响因子：
5.4
通讯作者：
T. Lei
中科院分区：
文献类型：
--
作者：
K. Aoki;T. Lei
在不含支持电解质的胶乳悬浮液中，磺化聚苯乙烯胶乳电荷静电固定氢离子的还原电流表现出更大的Arrhenius类型的温度依赖性，而不是自由氢离子。活化能为14kJ·−~(-1)，表明固定化应通过局部势能最小和最大势能来实现，而不是通过氢离子与胶乳粒子之间的单调吸引势来实现。随着支持电解质的加入，温度依赖性降低。合成了单分散的乳胶粒，使其电荷数(27 200e)变大。其粒径为134 nm，均匀度为1.01。
The reduction current of the hydrogen ion immobilized electrostatically by the sulfonated polystyrene latex charge showed much larger temperature dependence of an Arrhenius type than that of a free hydrogen ion when the latex suspension included no supporting electrolyte. The activation energy, 14 kJ mol−1, suggests that the immobilization should be attained by a local potential minimum and a maximum rather than a monotonic attractive potential between the hydrogen ion and the latex particle. The temperature dependence decreased with the addition of supporting electrolyte. The mono-dispersed latex particle was synthesized so that the charge number (27 200e) became large. Its diameter was 134 nm and the uniformity ratio was 1.01.