Preparation of nanocellulose directly from kenaf bast: The change in particle size
Preparation of nanocellulose directly from kenaf bast: The change in particle size
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DOI：
10.15376/biores.13.3.5598-5607
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发表时间：
2018-06
期刊：
影响因子：
1.5
通讯作者：
Wei Jiang;Shaoyang Liu;Chengfeng Zhou;Shouwu Gao;Yan Song;Wei Li;Wei-guo Zhu;Yu-ming Lv;Guangting Han
中科院分区：
文献类型：
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作者：
Wei Jiang;Shaoyang Liu;Chengfeng Zhou;Shouwu Gao;Yan Song;Wei Li;Wei-guo Zhu;Yu-ming Lv;Guangting Han
从木质纤维植物中生产纳米纤维素是困难的，但可以通过微波辅助处理来实现。然而，在这个过程中，尺寸的变化还没有得到彻底的研究。本研究以红麻韧皮为原料，采用微波、化学和超声波等方法制备纤维素纳米纤维。在整个实验过程中，使用光学显微镜和扫描电子显微镜(SEM)监测了纤维的大小。对红麻单纤维细胞也进行了分离和测定。结果表明，微波处理时间对红麻纤维的破坏有显著影响，而化学处理中氢氧化钠的浓度对红麻纤维粒度的影响有限。微波和化学处理均能对红麻纤维进行纵向破坏，超声波处理能将纤维颗粒从微米级降低到纳米级。
Producing nanocellulose from lignocellulosic plants is difficult but can be achieved with microwave-assisted treatment. However, the changes in dimensions during the process have not been investigated thoroughly. In this study, kenaf bast was used to produce cellulose nanofibers using microwave, chemical, and ultrasonic treatments. Fiber sizes were monitored throughout the experiment using an optical microscope and scanning electron microscopy (SEM). The kenaf single fiber cells were also isolated and measured. The results showed that the duration of microwave treatment notably influenced the destruction of kenaf fibers, and the concentration of NaOH in the chemical treatment had only a limited effect on the reduction of kenaf particle size. Both the microwave and chemical treatments were able to destruct the kenaf fibers longitudinally, and the ultrasonic treatment was able to reduce cellulose particles from micro-size to nano-size.