Transparent Woody Film Made by Dissolution of Finely Divided Japanese Beech in Formic Acid at Room Temperature
Transparent Woody Film Made by Dissolution of Finely Divided Japanese Beech in Formic Acid at Room Temperature
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DOI：
10.1021/acssuschemeng.7b02839
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发表时间：
2017-11
影响因子：
8.4
通讯作者：
Yuri Nishiwaki-Akine;Sui Kanazawa;Takashi Uneyama;K. Nitta;R. Yamamoto-Ikemoto;Takashi Watanabe
中科院分区：
文献类型：
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作者：
Yuri Nishiwaki-Akine;Sui Kanazawa;Takashi Uneyama;K. Nitta;R. Yamamoto-Ikemoto;Takashi Watanabe
通过将细碎的日本山毛榉木在室温下直接溶解在甲酸中 4-7 天，然后在基材上缓慢蒸发溶剂，开发出一种新的透明扁平木质薄膜。所得木质薄膜可弯曲、折叠而不断裂（可用于折纸），且具有较高的杨氏模量和拉伸强度。热分析表明，即使在相对较高的温度下，木质薄膜也具有机械和热稳定性，并且可以在高达 180 °C 的温度下使用而不会软化。该膜吸收的水量与纤维素膜吸收的水量几乎相同，并且具有非常高的生物降解性，可与纤维素相媲美。该薄膜的制备无需去除木材中的任何成分，并使用非常简单的加工方法。我们认为这项工作为生产可生物降解且可持续的“模制木材”材料开辟了道路。
A new transparent flat woody film was developed by direct dissolution of finely divided Japanese beech wood in formic acid at room temperature for 4−7 days and subsequent slow evaporation of the solvent on a substrate. The obtained woody film was bendable and foldable without breaking (it could be used for origami) and had a relatively high Young’s modulus and tensile strength. The thermal analyses showed that the woody film was mechanically and thermally stable even at relatively high temperatures and can be utilized up to 180 °C without softening. The film absorbed almost the same amount of water as that absorbed by the cellulose film and had very high biodegradability, which was comparable with that of cellulose. The film was prepared without removing any constituents from wood and using a very simple processing method. We think that this work opens the way for the production of biodegradable and sustainable “molded wood” materials.