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Efficient Cleavage of Strong Hydrogen Bonds in Cotton by Deep Eutectic Solvents and Facile Fabrication of Cellulose Nanocrystals in High Yields
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-08-03 00:00:00 , DOI: 10.1021/acssuschemeng.7b00954 Yongzhuang Liu 1 , Bingtuo Guo 1 , Qinqin Xia 1 , Juan Meng 1 , Wenshuai Chen 1 , Shouxin Liu 1 , Qingwen Wang 1 , Yixing Liu 1 , Jian Li 1 , Haipeng Yu 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-08-03 00:00:00 , DOI: 10.1021/acssuschemeng.7b00954 Yongzhuang Liu 1 , Bingtuo Guo 1 , Qinqin Xia 1 , Juan Meng 1 , Wenshuai Chen 1 , Shouxin Liu 1 , Qingwen Wang 1 , Yixing Liu 1 , Jian Li 1 , Haipeng Yu 1
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The content of cellulose in biomass is important for producing nanocellulose in high yields. Cotton fibers containing ultrahigh purity (∼95%) cellulose are ideal feedstock for nanocellulose production. However, the presence of strong hydrogen bonding between the cellulose chains limits the use of cotton fibers for the production of nanocellulose in a facile and mild process. Here, efficient cleavage of the strong hydrogen bonds in cotton and ultrafast fabrication of cellulose nanocrystals (CNCs) with a high yield of 74.2% were first realized through a 3 min microwave-assisted deep eutectic solvent pretreatment and a subsequent high-intensity ultrasonication process. The obtained CNCs had diameters of 3–25 nm, and lengths ranged between 100 and 350 nm. The CNCs also displayed a relative crystallinity of 82%, and the thermal degradation temperature started from 320 °C. The study provides a green and efficient method for the mass production of cotton CNCs, and is expected to contribute to improving the refinery utilization of cotton feedstock.
中文翻译：
通过深共晶溶剂有效裂解棉花中的强氢键，并以高产简便地制备纤维素纳米晶体
生物质中纤维素的含量对于高产量生产纳米纤维素很重要。包含超高纯度（约95％）纤维素的棉纤维是生产纳米纤维素的理想原料。但是，纤维素链之间存在强氢键，限制了棉纤维在简便，温和的过程中用于生产纳米纤维素的用途。在这里，首先通过3分钟的微波辅助深度低共熔溶剂预处理和随后的高强度超声处理，首先实现了棉花中强氢键的有效裂解和纤维素纳米晶体（CNC）的超快制备，产率高达74.2％。获得的CNC直径为3–25 nm，长度在100和350 nm之间。CNC也显示出82％的相对结晶度，热降解温度从320°C开始。该研究为批量生产CNC棉提供了一种绿色高效的方法，有望为提高棉花原料的精炼利用做出贡献。
更新日期：2017-08-03
中文翻译：
通过深共晶溶剂有效裂解棉花中的强氢键，并以高产简便地制备纤维素纳米晶体
生物质中纤维素的含量对于高产量生产纳米纤维素很重要。包含超高纯度（约95％）纤维素的棉纤维是生产纳米纤维素的理想原料。但是，纤维素链之间存在强氢键，限制了棉纤维在简便，温和的过程中用于生产纳米纤维素的用途。在这里，首先通过3分钟的微波辅助深度低共熔溶剂预处理和随后的高强度超声处理，首先实现了棉花中强氢键的有效裂解和纤维素纳米晶体（CNC）的超快制备，产率高达74.2％。获得的CNC直径为3–25 nm，长度在100和350 nm之间。CNC也显示出82％的相对结晶度，热降解温度从320°C开始。该研究为批量生产CNC棉提供了一种绿色高效的方法，有望为提高棉花原料的精炼利用做出贡献。
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