State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
Carbohydr Polym. 2020 Jan 1;227:115366. doi: 10.1016/j.carbpol.2019.115366. Epub 2019 Sep 22.
Developing green substrates based on cellulose to substitute synthetic plastics meet the requirement for the sustainable future. However, cellulose-based substrates supporting for building electronic devices are usually opaque and highly hydrophilic, which ultimately limits the performance of optoelectronic devices. Herein, we report a new avenue for fabrication of highly transparent, weakly hydrophilic and biodegradable cellulose film. The acquired cellulose film not only has high transparency (over 90%), but also displays weak hydrophilicity (∼79° of initial water-contact angle) and still remains 3.5 MPa of tensile strength after soaking for two days in deionized water. Additionally, the degradation half-life of cellulose film is 20 days, and the cellulose films also have better thermostability. Moreover, the flexible electroluminescent devices have been successfully constructed by using this cellulose film as a green substrate. This novel strategy will greatly enrich the applications of cellulose films for next generation green electronics.
基于纤维素开发绿色基底以替代合成塑料符合可持续未来的要求。然而，用于构建电子设备的基于纤维素的基底通常是不透明的和高度亲水的，这最终限制了光电设备的性能。在此，我们报告了一种制造高透明、弱亲水和可生物降解纤维素薄膜的新途径。所获得的纤维素薄膜不仅具有高透明度（超过 90%），而且显示出弱亲水性（初始水接触角约为 79°），并且在去离子水中浸泡两天后仍保持 3.5 MPa 的拉伸强度。此外，纤维素薄膜的降解半衰期为 20 天，纤维素薄膜还具有更好的热稳定性。此外，还成功地使用该纤维素薄膜作为绿色基底构建了柔性电致发光器件。这种新颖的策略将极大地丰富纤维素薄膜在下一代绿色电子学中的应用。
