Yang Yongqi, Li Jiaqi, Li Xinyao, Guan Lin, Gao Zijian, Duan Lijie, Jia Fei, Gao Guanghui
Polymeric and Soft Materials Laboratory, School of Chemical Engineering, and Advanced Institute of Materials Science , Changchun University of Technology , Changchun 130012 , P. R. China.
ACS Appl Mater Interfaces. 2019 Apr 17;11(15):14322-14328. doi: 10.1021/acsami.9b01207. Epub 2019 Apr 2.
Paper, for writing and printing, is consumed a lot in modern life. However, the production of conventional paper could cause many problems, such as deforestation and environmental pollution. Therefore, it is necessary and urgent to explore novel strategies to solve these problems. In this work, a polyoxometalate-doped gelatin film with high strength, excellent transparency, and fast photochromic properties is designed and prepared. The film can display different colors by using a variety of reagents, exhibiting its potential application as a paper medium. Its rapid photochromic properties allow complex high-resolution images to be displayed by UV light printing. It is found that the mechanical and photochromic properties could be regulated by the introduction of triethylene glycol, and the fading process could be controlled by changing the temperature and humidity. Moreover, it is rewritable, self-repairable, and recyclable, and can also achieve long-term preservation without fading. It is envisioned that the environmentally friendly films with low cost, ease of preparation, and recycling advantages have the potential to be an alternative to conventional paper for writing and printing.
用于书写和印刷的纸张在现代生活中消耗量大。然而，传统纸张的生产会引发诸多问题，如森林砍伐和环境污染。因此，探索解决这些问题的新策略既必要又紧迫。在这项工作中，设计并制备了一种具有高强度、优异透明度和快速光致变色性能的多金属氧酸盐掺杂明胶薄膜。该薄膜通过使用多种试剂可呈现不同颜色，展现出其作为纸张介质的潜在应用。其快速光致变色性能使得通过紫外光印刷能够显示复杂的高分辨率图像。研究发现，通过引入三甘醇可调节其机械性能和光致变色性能，并且通过改变温度和湿度可控制褪色过程。此外，它具有可重写、自修复和可回收的特性，还能实现长期保存且不褪色。可以预想，这种具有低成本、易于制备和回收优势的环保薄膜有潜力成为传统书写和印刷纸张的替代品。
