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在高固体含量下生产纤维素微纤维素,有或没有机械或酶性预处理

Xiaoxue Zhang^1,2, Daniel J Yelle², Peter Kitin²

¹Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China.

Biomacromolecules

|March 21, 2024

概括

在高固体含量下生产纤维素微纤维 (CMF) 是可行的,使用行星球磨. 像酶或机械提炼这样的预处理方法可以优化CMF的生产效率和特性.

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.
化学工程是化学工程的重要组成部分.

背景情况:

纤维素微纤维 (CMF) 是一种先进的生物材料,具有多种应用.
高固体含量的CMF的高效生产对于工业可扩展性至关重要.
目前的文献缺乏关于高固体CMF生产方法的全面数据.

研究的目的:

评估从高固体含量 (17-28%) 的硬木纸中生产CMF的可行性.
研究酶和机械预处理对CMF生产的影响.
阐明在高固体削过程中控制纤维纤维化的机制.

主要方法:

在各种固体含量 (1-28%) 的强力漂白硬木纸中进行行星球磨.
在加工前使用内葡萄糖酶预处理和机械提炼 (PFI磨机).
分析CMF形态,水值 (WRV) 和沉积行为.

主要成果:

高固体含量 (高达28%) 的行星球磨粉是CMF生产的可行方法.
内分葡萄糖酶预处理产生了短,类似粉碎的CMF;机械提炼加速了纤维化.
确定了两个纤维化机制:初级 (球纤维相互作用) 和二级 (纤维间摩擦/张力).

结论:

高固体CMF的生产是可以实现的,并且受到纤维分散和削参数的影响.
预处理具有明显的优势:酶为短纤维,机械为更快的纤维化.
该研究提供了对可扩展的CMF生产流程的商业相关见解.

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