从可可豆荚壳（CPH）生物质废弃物中分离和表征纳米晶纤维素
Isolation and characterization of nanocrystalline cellulose from cocoa pod husk (CPH) biomass wastes.
作者信息
Akinjokun Adebola Iyabode, Petrik Leslie Felicia, Ogunfowokan Aderemi Okunola, Ajao John, Ojumu Tunde Victor
机构信息
Department of Chemical Engineering, Cape Peninsula University of Technology, Cape Town, South Africa.
Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria.
出版信息
Heliyon. 2021 Apr 11;7(4):e06680. doi: 10.1016/j.heliyon.2021.e06680. eCollection 2021 Apr.
In this paper, cellulose nanocrystals (CNCs) were isolated from the cellulose extracted from cocoa pod husk waste, followed by characterization using XRD, FT-IR, TGA, SEM and TEM to determine its crystallinity, structural properties, thermal characteristics, morphology and dimensions respectively. The result revealed that the cocoa pod husk amorphous segments containing hemicelluloses and lignin were extensively removed with increasing chemical treatments leading to increased purity, crystallinity index and thermal stability of the extracted materials. The diameter, length and crystallinity index of the CNC isolated from the CPH are 10-60 nm, 41-155 nm and 67.60% respectively.
在本文中，从可可豆荚壳废料中提取的纤维素中分离出纤维素纳米晶体（CNC），随后分别使用X射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）、热重分析（TGA）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对其进行表征，以确定其结晶度、结构性质、热特性、形态和尺寸。结果表明，随着化学处理次数的增加，含有半纤维素和木质素的可可豆荚壳无定形部分被大量去除，从而提高了提取物的纯度、结晶度指数和热稳定性。从可可豆荚壳中分离出的CNC的直径、长度和结晶度指数分别为10-60纳米、41-155纳米和67.60%。
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