从ionoSolv纸中有效地提取碳氧化纳米纤维素,使用性H2O2辅助氧化
Aida Abouelela Rafat1, Pedro Verdía Barbará1, Asim Ullah1
1Department of Chemical Engineering, Imperial College London, South Kensington, Exhibition Road, London, SW7 2AZ UK.
概括
研究人员开发了一种简单的方法,可以从Miscanthus生物质中制造碳氧化纤维素纳米晶体 (CNC). 这一过程产生了稳定的CNC悬挂,具有可调节的性能,适用于各种应用.
科学领域:
- 材料科学 材料科学 材料科学
- 生物质的价值化 生物质的价值化
- 纳米技术纳米技术
背景情况:
- 纤维素纳米晶体 (CNC) 是由纤维素衍生的有吸引力的纳米材料.
- 从丰富的生物质来源可持续生产CNC至关重要.
- 碳氧化增强了CNC的稳定性和功能.
研究的目的:
- 开发一种简单的方法,从Miscanthus X Giganteus中生产碳氧化纤维素纳米晶体 (CNC).
- 为了研究生物质分化严重程度对CNC属性的影响.
- 为了优化CNC生产产量和结晶性保存.
主要方法:
- 两个步骤的过程:生物质的分化使用一个前离子离子液体,其次是过氧化 (H2O2) 的氧化.
- 评估CNC的组成,结构,尺寸,热稳定性,结晶性和聚合度.
- 优化使用较温和的氧化和超声波.
主要成果:
- 分割的严重程度影响了纸的纯度和反应性,但对最终的CNC特性影响很小.
- 与纸 (65-69%) 相比,生产了稳定,负电荷,针状的CNC,结晶度降低 (58-61%).
- 碳基组改善了悬浮的稳定性,但略有降低了热稳定性;优化的方法产生了63%的结晶性.
结论:
- 建立了一种简单而有效的方法,用于从草地生物质中进行碳氧化CNC生产.
- 该过程允许生成适合进一步应用的稳定CNC悬挂.
- 优化条件平衡了CNC产量与保存的纤维素结晶性.
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