Department of Chemistry, The Federal University of Technology, PMB 704, Akure, Nigeria.
Sci Rep. 2021 Jan 13;11(1):1025. doi: 10.1038/s41598-020-78533-6.
This study attempted to valorise wild Dioscorea bulbifera yam presently known to be poisonous and inedible obtained from three sources. The functional properties as well as its chemical composition were determined and isolated. Isolated cellulose was modified by the actions of sodium hydroxide and maleic anhydride. The biomass, isolated products and modified cellulose were characterized. Results showed that the highest cellulose obtained was 82.6%. FT-IR results showed successful modification of cellulose with the presence of a carbonyl (C = O) adsorption band at around 1725 cm. SEM images and XRD data showed a clear decrease in crystallinity but a slight increase in crystallite size after modification of the mercerized cellulose. TGA results showed the polymers degraded between 284 and 414 °C. The study reveals that the modified cellulose has potential application as an adsorbent and industrial material.
本研究试图对三种来源的目前已知有毒且不可食用的野生薯蓣块茎进行增值利用。测定并分离了其功能特性和化学成分。用氢氧化钠和马来酸酐的作用对分离出的纤维素进行了改性。对生物质、分离产物和改性纤维素进行了表征。结果表明，最高可获得 82.6%的纤维素。FT-IR 结果表明，纤维素的成功改性，在约 1725 cm 处出现了一个羰基 (C = O) 吸附带。SEM 图像和 XRD 数据表明，在对纤维素进行丝光化改性后，结晶度明显降低，但结晶度略有增加。TGA 结果表明，聚合物在 284 至 414°C 之间降解。该研究表明，改性纤维素具有作为吸附剂和工业材料的应用潜力。
