Details

Autor(en) / Beteiligte

• Wang, Ruiliu
• Chen, Chaoji
• Pang, Zhenqian
• Wang, Xizheng
• Zhou, Yubing
• Dong, Qi
• Guo, Miao
• Gao, Jinlong
• Ray, Upamanyu
• Xia, Qinqin
• Lin, Zhiwei
• He, Shuaiming
• Foster, Bob
• Li, Teng
• Hu, Liangbing

Titel

Fabrication of Cellulose–Graphite Foam via Ion Cross-linking and Ambient-Drying

Ist Teil von

• Nano letters, 2022-05, Vol.22 (10), p.3931-3938

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Conventional plastic foams are usually produced by fossil-fuel-derived polymers, which are difficult to degrade in nature. As an alternative, cellulose is a promising biodegradable polymer that can be used to fabricate greener foams, yet such a process typically relies on methods (e.g., freeze-drying and supercritical-drying) that are hardly scalable and time-consuming. Here, we develop a fast and scalable approach to prepare cellulose–graphite foams via rapidly cross-linking the cellulose fibrils in metal ions-containing solution followed by ambient drying. The prepared foams exhibit low density, high compressive strength, and excellent water stability. Moreover, the cross-linking of the cellulose fibrils can be triggered by various metal ions, indicating good universality. We further use density functional theory to reveal the cross-linking effect of different ions, which shows good agreement with our experimental observation. Our approach presents a sustainable route toward low-cost, environmentally friendly, and scalable foam production for a range of applications.