Electron spin resonance studies of manganese(II) and copper(II) salts of poly(ethylene‐co‐methacrylic acid)s
Electron spin resonance studies of manganese(II) and copper(II) salts of poly(ethylene‐co‐methacrylic acid)s
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聚（乙烯-甲基丙烯酸）锰（II）盐和铜（II）盐的电子自旋共振研究
DOI：
10.1002/polb.1988.090260505
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
T. Kinoshita
中科院分区：
文献类型：
--
作者：
M. Takei;Y. Tsujita;S. Shimada;Hisakatsu Ichihara;M. Enokida;A. Takizawa;T. Kinoshita
用ESR波谱研究了Mn ~（2+）和Cu ~（2+）中和的聚乙烯-co-甲基丙烯酸离聚体的离子相互作用，探讨了离子聚集体的局部结构。乙烯离聚物的ESR谱作为中和度和温度的函数。ESR证实了离聚物中存在孤立和聚集的阳离子。此外，在含有Cu 2+的乙烯离聚物中，发现形成了类似于乙酸铜一水合物的晶体结构的Cu 2 +− Cu 2+二聚体结构。随着温度的升高，阳离子-阳离子相互作用在70°C左右发生显著变化，这代表了聚集离子结构中阳离子运动的开始。
The ionic interaction of poly(ethylene-co-methacrylic acid) ionomer neutralized with Mn2+ or Cu2+ was studied by ESR spectroscopy to explore the local structure in the ionic aggregate. ESR spectra of the ethylene ionomer were obtained as functions of degree of neutralization and temperature. The existence of both isolated and aggregated cations in the ionomer was confirmed by ESR. In addition, the formation of a Cu2+−Cu2+ dimer structure similar to the crystal structure of copper acetate monohydrate was found in ethylene ionomer containing the Cu2+. Cation-cation interactions changed markedly around 70°C with increasing temperature, representing the onset of the motion of cations in the aggregated ionic structure.