Effects of Different Extraction Solvents on the Extractive Removal and Properties of Oil Palm Empty-Fruit Bunch Cellulosic Nanofibers

IF 0.8 Q3 MULTIDISCIPLINARY SCIENCES Makara Journal of Science Pub Date : 2021-09-30 DOI:10.7454/mss.v25i3.1236
A. Solikhin, Y. Hadi, M. Y. Massijaya, S. Nikmatin
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Abstract

In this study, the effect of different extraction solvents on the isolation and properties of cellulosic nanofibers (CNFs) were investigated. The unextracted and different solvent-extracted CNFs formed horn-like features and irregularly aggregated nanofibers after oven drying. Scanning electron microscopy at 10000× magnification revealed the smooth external surfaces of all extracted CNFs; this finding is attributed to the limited deposition of amorphous lignocellulosic components on the fibers. All resultant CNF solutions revealed aggregation, with a particle size distribution and zeta average of 21.39–513.00 nm and 162.26–342.13 nm, respectively. Extraction with different solvents and chemical treatment yielded CNF solutions with good transparency. Increases in crystallinity indices were generated by extractive removal and enhanced the delignification and bleaching processes. The atomic crystal size of untreated and different solvent-treated CNFs varied with the type of native cellulose. A dramatic decrease in organic (i.e., C, N, and O) and inorganic (i.e., Na, K, and Si) elements was observed following extractive removal and cellulose purification.
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不同萃取溶剂对油棕空果束纤维素纳米纤维萃取去除及性能的影响
研究了不同提取溶剂对纤维素纳米纤维(CNFs)分离及性能的影响。未提取的和不同溶剂提取的CNFs在烘箱干燥后形成角状特征和不规则聚集的纳米纤维。扫描电镜显示提取的CNFs外表面光滑;这一发现归因于无定形木质纤维素成分在纤维上的有限沉积。所得CNF溶液均呈聚集状,粒径分布为21.39 ~ 513.00 nm, zeta平均值为162.26 ~ 342.13 nm。不同溶剂萃取和化学处理得到的CNF溶液具有良好的透明度。除去萃取物后,结晶度指数增加,脱木质素和漂白过程增强。未经处理和不同溶剂处理的CNFs的原子晶体大小随天然纤维素的类型而变化。在萃取物去除和纤维素净化后,观察到有机(即C、N和O)和无机(即Na、K和Si)元素的急剧减少。
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来源期刊
Makara Journal of Science
Makara Journal of Science MULTIDISCIPLINARY SCIENCES-
CiteScore
1.30
自引率
20.00%
发文量
24
审稿时长
24 weeks
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