School of Materials Science and Engineering, South China University of Technology, Wushan Road, Tianhe District, Guangzhou, Guangdong, 510640, China.
School of Materials Science and Engineering, South China University of Technology, Wushan Road, Tianhe District, Guangzhou, Guangdong, 510640, China.
Carbohydr Polym. 2020 Jan 1;227:115368. doi: 10.1016/j.carbpol.2019.115368. Epub 2019 Sep 22.
This paper reveals the structural variations of cellulose nanocrystals (CNC) prepared from sugarcane bagasse (SCB) using different methods and the organic-inorganic hybrid nanomaterials were constructed with polyhedral oligomeric silsesquioxane (POSS). First, pure cellulose was extracted from SCB, and four CNCs were successfully obtained. The huge differences in structure and properties provide a choice for various applications. Subsequently, novel CNC/POSS hybrid nanomaterials were prepared from carboxylated CNC via carbodiimide-assisted coupling chemistry. The morphology and properties of hybrids were investigated in detail. The hybrids exhibit great differences in structure and properties due to the difference in CNC. The incorporation of POSS has improved the thermal performance of the CNC, and the mass ratio has a significant impact on molecular structure. This work provides useful information for the preparation of multi-type CNCs using agricultural and forestry by-products, and the novel CNC/POSS hybrid has opened up new ideas for the application of nanocellulose.
本文揭示了使用不同方法制备的来自甘蔗渣（SCB）的纤维素纳米晶（CNC）的结构变化，并构建了具有多面体低聚倍半硅氧烷（POSS）的有机-无机杂化纳米材料。首先，从 SCB 中提取出纯纤维素，并成功获得了四种 CNC。其结构和性能的巨大差异为各种应用提供了选择。随后，通过碳二亚胺辅助偶联化学，从羧基化 CNC 制备了新型 CNC/POSS 杂化纳米材料。详细研究了混合物的形态和性能。由于 CNC 的差异，混合物在结构和性能上表现出很大的差异。POSS 的加入提高了 CNC 的热性能，质量比对分子结构有显著影响。这项工作为利用农林副产品制备多类型 CNC 提供了有用信息，新型 CNC/POSS 杂化材料为纳米纤维素的应用开辟了新思路。
