来自农业残留物的纤维素纳米晶体 (
Mohamed H Hemida1, Hesham Moustafa2,3, Sherif Mehanny4
1Agricultural Engineering Department, Faculty of Agriculture, Cairo University, Egypt.
Heliyon
|June 9, 2023
概括
纤维素纳米晶体 (CNCs) 是从尼罗河纤维中提取的,使用酸水解. 在20分钟的最佳提取过程中,产生了纤维状CNC,证明了可持续材料应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 生物技术是生物技术.
- 可持续化学 可持续化学
背景情况:
- 农业残留物越来越多地被用于纤维素纳米晶 (CNC) 提取.
- 尼罗河 (Eichhornia crassipes) 是一个可行的,未充分利用的生物质来源.
- CNC为各种应用和气候变化缓解提供了独特的特性.
研究的目的:
- 通过酸性水解从尼罗河纤维 (NRF) 提取CNC.
- 为了研究水解持续时间对CNC性能的影响.
- 为了比较NRF衍生的CNC与微晶纤维素 (MCC) 作为对照.
主要方法:
- NRF经过性纤维化和漂白预处理.
- 酸水解在45°C进行,持续时间为5到30分钟.
- 鉴定包括XRD,FT-IR,TEM和XPS.
主要成果:
- 结晶度指数在10分钟的水解后达到峰值,然后下降,由FT-IR证实.
- 在30分钟后,TEM显示了球形的CNC,在20分钟后出现了最佳的纤维状结构.
- XPS证实CNC主要由碳和氧组成.
结论:
- 酸解的持续时间显著影响CNC形态和结晶性.
- 20分钟的水解是从尼罗河纤维产生纤维CNC的最佳方法.
- 尼罗河纤维是可持续CNC生产的有希望的来源.
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