ACS Applied Materials & Interfaces
ACS Applied Materials & Interfaces
5 years ago

Thermally Stable Cellulose Nanocrystals toward High-Performance 2D and 3D Nanostructures

Thermally Stable Cellulose Nanocrystals toward High-Performance 2D and 3D Nanostructures
Iain Michael Kierzewski, Liangbing Hu, Huiyang Bian, Ziqiang Shao, Yilin Wang, Chao Jia, J. Y. Zhu, Liheng Chen, Tingting Gao, Yonggang Yao, Feng Jiang
Cellulose nanomaterials have attracted much attention in a broad range of fields such as flexible electronics, tissue engineering, and 3D printing for their excellent mechanical strength and intriguing optical properties. Economic, sustainable, and eco-friendly production of cellulose nanomaterials with high thermal stability, however, remains a tremendous challenge. Here versatile cellulose nanocrystals (DM-OA-CNCs) are prepared through fully recyclable oxalic acid (OA) hydrolysis along with disk-milling (DM) pretreatment of bleached kraft eucalyptus pulp. Compared with the commonly used cellulose nanocrystals from sulfuric acid hydrolysis, DM-OA-CNCs show several advantages including large aspect ratio, carboxylated surface, and excellent thermal stability along with high yield. We also successfully demonstrate the fabrication of high-performance films and 3D-printed patterns using DM-OA-CNCs. The high-performance films with high transparency, ultralow haze, and excellent thermal stability have the great potential for applications in flexible electronic devices. The 3D-printed patterns with porous structures can be potentially applied in the field of tissue engineering as scaffolds.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b08760

DOI: 10.1021/acsami.7b08760

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