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关于液相与气相盐酸水解用于从甘包中分离微晶纤维素的比较研究

Jaber Hosseinzadeh¹, Ali Abdulkhani¹, Alireza Ashori²

¹Department of Wood and Paper Science and Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran.

International journal of biological macromolecules

|March 8, 2024

概括

研究人员开发了一种绿色,节能的方法,使用盐酸气体从甘包中生产微晶纤维素 (MCC). 这种快速,低温的工艺产生了MCC,其性能与传统方法相提并论,提供了一个可持续的替代方案.

科学领域:

材料科学材料科学材料科学
绿色化学绿色化学
生物质的价值化生物质的价值化

背景情况:

甘包油是一种丰富的纤维素基农业工业残留物.
传统的纤维素提取方法可能是能源密集型和环境负担.
开发可持续的生物质价值化过程至关重要.

研究的目的:

开发一种节能,绿色的方法,从甘中合成微晶纤维素 (MCC).
为了优化MCC生产液相水解条件.
引入和验证一种新的气相盐酸 (HCl) 水解技术.

主要方法:

甘包通过苏打粉,漂白和冷净化被加工成纤维素纸.
使用响应表面方法 (3.3% HCl,117°C,127分钟) 优化了液相水解.
一种气相水解方法涉及将湿纤维素纤维 (15-18%水分) 暴露在热空气 (40°C) 中的气态化物中.

主要成果:

优化的液相水解产生了MCC,其聚合度为350.
气相水解产生了MCC,其物理化学性能与液相方法相比较.
气体制造的MCC表现出85%的结晶度,71 Å的结晶体尺寸,以及热稳定的杆状形态 (直径<200μm).

结论:

气相HCl处理是一种有效的,节能的,更绿色的替代方案,用于MCC生产的传统水酸水解.
这种可持续的方法使得甘包的价值化成为高纯度的MCC.
开发的方法为从生物质中生产纤维素纳米材料提供了一个有前途的途径.

关键词:

农业工业残留物农业工业残留物水解试验的试验石灰纤维素材料是什么微晶纤维素的微晶纤维素.

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