Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia.
J Nanosci Nanotechnol. 2020 Sep 1;20(9):5642-5647. doi: 10.1166/jnn.2020.17879.
Two Australian native wooden sources (Acacia Mangium and Eucalyptus Globulus) derived pulps were explored as raw feed stocks to prepare the valuable nanomaterial of cellulose nanocrystals (CNC). After bleaching and acid hydrolysis, cellulose nanocrystals were successfully produced with high yields of approximately 60% for both kraft pulps. According to the characterization of SEM and AFM, the as prepared CNC had a rod like structure with the length and diameter in the range of 2001000 nm and 10100 nm, respectively based on the initial wooden source. XRD confirmed the crystalline structure of the resulting CNC. Further characterisation by TGA showed that the chemical treatment of the wood pulp had impact upon the thermal stability, evidenced by a lower onset temperature of the thermal decomposition of CNC.
两种澳大利亚本土木质原料（马占相思和蓝桉）制成的纸浆被探索作为原始原料来制备有价值的纳米纤维素晶体（CNC）。经过漂白和酸水解后，两种硫酸盐浆的纤维素纳米晶体的产率都高达约 60%。根据 SEM 和 AFM 的表征，所制备的 CNC 具有棒状结构，长度和直径分别在 2001000nm 和 10100nm 范围内，这取决于初始木质原料。XRD 证实了所得 CNC 的结晶结构。进一步的热重分析（TGA）表明，木浆的化学处理对热稳定性有影响，这表现为 CNC 热分解的起始温度更低。
