Transformation of a Kurome natural lacquer film from glassy to rubbery polymer by the presence of moisture
Transformation of a Kurome natural lacquer film from glassy to rubbery polymer by the presence of moisture
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DOI：
10.1016/j.porgcoat.2016.12.003
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发表时间：
2017-03-01
影响因子：
6.6
通讯作者：
Nagai, Kazukiyo
中科院分区：
文献类型：
--
作者：
Sato, Shuichi;Ido, Ryohei;Nagai, Kazukiyo
系统地研究了气态氧和溶解于水中的氧气和二氧化碳在黑木耳天然漆膜中的透过率以及水蒸气的透过率。Kurome漆膜的油乳结构中含有水，膜具有相分离结构，具有疏水玻璃(即漆酚)和亲水性橡胶(即多糖)聚合物成分。Kurome漆膜对水蒸气的透过率高于对氧气和二氧化碳的透过率，表明亲水组分的存在影响了水蒸气的透过率。Kurome漆膜的气体渗透行为表明，在干燥和潮湿状态下，它们分别表现为玻璃聚合物和橡胶聚合物。因此，Kurome漆膜是一种聚合物材料，可以在有水分的情况下适应不同的环境。(C)2016爱思唯尔B.V.保留所有权利。
The permeabilities of gaseous and dissolved (in water) oxygen and carbon dioxide through a Kurome natural lacquer film, as well as the water vapor permeability, were systematically investigated. The Kurome lacquer films contained water in their oil emulsion structure, and the films had phase-separated structures with hydrophobic glassy (i.e., urushiol) and hydrophilic rubbery (i.e., polysaccharide) polymer components. The Kurome lacquer films exhibited a relatively higher permeability for water vapor than for oxygen and carbon dioxide, indicating that the presence of hydrophilic components influenced the water vapor permeability. The gas permeation behavior of the Kurome lacquer films revealed that they behave like glassy and rubbery polymers in the dry and wet states, respectively. Thus, Kurome lacquer films are polymer materials that adapt to different environments in the presence of moisture. (C) 2016 Elsevier B.V. All rights reserved.