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关于纤维素纳米纤维悬浮物的厚度

Benjamin J Zhuang¹, S Shams Es-Haghi²

¹Advanced Structures and Composites Center, The University of Maine, 35 Flagstaff Road, Orono, ME 04469-5793, USA.

Journal of colloid and interface science

|October 24, 2024

概括

纤维素纳米纤维素 (CNF) 悬浮体表现出厚度,粘度随着时间的推移而降低,并在休息后恢复. 较高的剪切率有助于结构恢复,而变形可能会阻碍它.

科学领域:

材料科学材料科学材料科学
类风病学类风病学类风病学
纳米技术纳米技术

背景情况:

纤维素纳米纤维 (CNF) 是具有独特特性的先进纳米材料.
了解CNF悬浮物的质性行为对于它们的应用至关重要.
厚性,一个依赖时间的剪切稀释行为,是许多复杂流体的关键特征.

研究的目的:

为了研究纤维素纳米纤维素 (CNF) 水性悬浮物的厚性otropic行为.
分析CNF度和剪切条件对结构演变的影响.
描述CNF悬浮中的流环行为和侵蚀动态.

主要方法:

进行了爬行,剪切恢复,多步振荡,启动和流动循环实验.
使用了机械盘精炼CNF的水性悬浮液,其度为1和3重% .
分析了实验数据,以了解粘度变化和结构恢复.

主要成果:

CNF悬浮物表现出粗性特征,包括粘度降低和结构恢复.
较低的变形水平阻碍了结构恢复,而更高的剪切速率和应变幅度则促进了它.
创业公司的实验揭示了在两个层面的结构形成,在流动过程中发生了流体间侵蚀.

结论:

CNF悬浮物表现出由剪切历史和变形影响的复杂的厚性otropic行为.
叶片侵蚀和纤维重新排列之间的相互作用决定了观察到的质反应.
这些发现为基于CNF的材料的加工和应用提供了洞察力.

关键词:

在CNF中暂停使用.叶片叶片叶片叶片叶片类风病学类风病学类风病学关节炎症的治疗方法这就是Thixotropy.

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