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半纤维素水解盐添加剂对纤维素纳米纤维素脱水和再分散特性的影响

Jungkyu Kim¹, Jonghwa Kim², Seungoh Jung¹

¹Department of Agriculture, Forestry and Bioresources, College of Agriculture & Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.

Carbohydrate polymers

|March 29, 2024

概括

半纤维素水解盐 (HH) 在干燥过程中防止纤维素纳米纤维 (CNF) 中的纳米结构聚合. 这种限制剂增强了再分散,并保持了CNF的特性,使其更容易商业化.

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:

纳米纤维素具有环保性质,但面临商业化障碍.
干燥导致纳米纤维素中不可逆转的聚合,改变其结构.
木材的自然结构激发了纳米纤维素加工的新方法.

研究的目的:

为纤维素纳米纤维 (CNF) 开发一个干燥系统,防止聚合.
调查半纤维素化物 (HH) 作为CNF的限制剂的疗效.
评估HH对干燥CNF的再分散和稳定性的影响.

主要方法:

在纤维素纳米纤维素 (CNF) 悬浮剂中加入1重量%的半纤维素水解剂 (HH).
脱水和干燥的CNF/HH悬浮液.
对干燥CNF的再分散率和分散稳定性的评估.
重复分散的CNF/HH悬浮物的物理化学性质的表征.

主要成果:

在干燥过程中添加1重%的HH有效防止了CNF聚合.
干燥的CNF显著提高了再分散率和分散稳定性.
重复分散的CNF/HH悬浮剂保留了与原始CNF悬浮剂相比的物理化学特性.
在重新分散后,HH很容易通过水冲洗去除.

结论:

半纤维素化酸 (HH) 作为有效的封闭剂,抑制了CNF中不可逆转的结合.
与HH一起开发的CNF干燥系统保留了纳米纤维素的纳米结构和特性.
HH是一种有前途的,易于移除的药物,可以克服纳米纤维素聚合的挑战.

关键词:

添加剂是一种添加剂.聚合是一种聚合.纤维素纳米纤维素 (CNFs) 是一种干燥干燥干燥半纤维素酸化解液

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