Investigation of the molecular description of small molecules in void spaces of wood using dielectric measurements
Investigation of the molecular description of small molecules in void spaces of wood using dielectric measurements
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DOI：
10.1007/s00226-022-01433-7
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发表时间：
2022-11
影响因子：
3.4
通讯作者：
S. Sudo;Youki Suzuki;M. Asano;S. Yagihara
中科院分区：
文献类型：
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作者：
S. Sudo;Youki Suzuki;M. Asano;S. Yagihara
在这项研究中，介电测量进行木材从万年青针叶树，柳杉，浸渍各种水溶液中的水和溶质分子在木材的空隙空间的分子描述进行调查。而Kohlrausch-Williams-Watts型的不对称松弛过程反映了自由水和溶质分子的运动被观察到在体状态，科尔-科尔型的对称松弛过程被观察到时，木材被浸渍的水溶液。这种对称的松弛过程中观察到的木材浸渍的水溶液中可以解释使用一个合作域与非均匀的尺寸分布，描述了散装水溶液的介电性能。溶质的分子结构之间的关系和合作域所形成的水和溶质分子的木材的空隙内保留的讨论。
In this study, dielectric measurements were performed on wood from an evergreen conifer tree,Cryptomeria japonica, impregnated with various aqueous solutions to investigate the molecular description of water and solute molecules in the void spaces of the wood. While the Kohlrausch–Williams–Watts-type asymmetric relaxation process reflecting the motion of the free water and solute molecules was observed in the bulk state, the Cole–Cole-type symmetric relaxation process was observed when the wood was impregnated with the aqueous solution. This symmetric relaxation process observed in the wood impregnated with the aqueous solution can be interpreted using a cooperative domain with a heterogeneous size distribution that describe the dielectric properties of bulk aqueous solutions. The relationship between the molecular structure of the solute and the cooperative domain formed by water and solute molecules that remain inside the voids of wood is discussed.