Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland.
Carbohydr Res. 2011 Dec 13;346(17):2718-26. doi: 10.1016/j.carres.2011.09.017. Epub 2011 Sep 22.
The present paper describes a preparation method and molecular investigations of new biodegradable proton-conducting carbohydrate polymer films based on alginic acid and benzimidazole. Electric conductivity was studied in a wide temperature range in order to check the potential application of these compounds as membranes for electrochemical devices. Compared to pure alginic acid powder or its film, the biodegradable film of alginic acid with an addition of benzimidazole exhibits considerably higher conductivity in the range above water boiling temperature (up to approximately 10(-3) S/cm at 473 K). Due to this important feature the obtained films can be considered as candidates for application in high-temperature electrochemical devices. The microscopic nature and mechanism of the conduction in alginate based materials were studied by proton nuclear magnetic resonance (NMR). The results show specific changes in morphology and molecular dynamics between pure alginate powders and the films obtained without and with the addition of benzimidazole molecules.
本文描述了一种基于海藻酸和苯并咪唑的新型可生物降解质子传导碳水化合物聚合物薄膜的制备方法和分子研究。为了检查这些化合物作为电化学器件膜的潜在应用，我们在很宽的温度范围内研究了电导率。与纯海藻酸粉末或其薄膜相比，添加苯并咪唑的海藻酸可生物降解薄膜在高于水沸点的温度范围内（在 473 K 时高达约 10(-3) S/cm）表现出相当高的电导率。由于这一重要特征，所得到的薄膜可以被认为是在高温电化学器件中应用的候选材料。通过质子核磁共振（NMR）研究了基于海藻酸盐的材料中传导的微观性质和机制。结果表明，纯海藻酸盐粉末和未添加以及添加苯并咪唑分子获得的薄膜之间在形态和分子动力学方面存在特定的变化。
