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纤维素纳米晶体和纳米纤维悬浮物的风学

Jiatong Xu¹, Pengguang Wang¹, Baihua Yuan²

¹Advanced Rheology Institute, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

Carbohydrate polymers

|November 20, 2023

概括

纤维素纳米晶体 (CNCs) 和纤维素纳米纤维素 (CNFs) 悬浮体表现出度和时间依赖的质. 由于其更高的面积比率,CNF悬浮表现出比CNC更大的厚度和屈服应力.

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:

纳米纤维素是一种可持续的纳米材料,提供了一个绿色平台,具有多样化的应用.
了解纳米纤维素悬浮物的质性行为,特别是产量,对于它们的实际使用至关重要,但仍然有限.

研究的目的:

系统地研究纤维素纳米晶体 (CNC) 和纤维素纳米纤维素 (CNF) 悬浮物的粘性弹性,厚度和产量行为.
为了确定这些纳米纤维素悬浮物的结构和质性质之间的关系.
为纳米纤维素悬浮剂的应用提供理论的风湿学基础.

主要方法:

风湿学分析包括稳定状态剪切,频率扫描,爬行恢复,歇斯底里循环和厚性otropic恢复测试.
使用爬行,稳定状态剪切,步骤剪切率,应力坡道,振幅扫描和大振幅振荡剪切测试来评估收益行为.
微形态学分析和Simha方程的应用以支持发现.

主要成果:

无论是CNC和CNF悬浮液的风湿性质都显示出严重的依赖于度和时间.
与CNC悬浮相比,CNF悬浮表现出更明显的厚度和更高的屈服应力.
CNF悬浮剂的增强性能归因于它们的更高的面比和形成更强大的结构骨架.

结论:

该研究提供了CNC和CNF悬浮液的综合性风学特征.
风质行为上的差异与CNC和CNF的结构特征有关.
研究结果为优化纳米纤维素悬浮剂在各种工业应用中的使用提供了理论基础.

关键词:

纤维素纳米晶体纤维素纳米晶体纤维素纳米纤维的纤维素.类风病学类风病学类风病学这就是Thixotropy.收益率应激应激应激应激应激应激应激应激应激应激

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