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扫描WAXS显微镜的再生纤维素纤维在中镜分辨率的扫描WAXS显微镜

Sara Johansson¹, Francesco Scattarella², Sebastian Kalbfleisch³

¹Division of Solid Mechanics, Lund University, Box 118, Lund SE-22100, Sweden.

|June 11, 2024

概括

再生纤维素纤维 (Ioncell-F) 显示均的结晶性,但从中心向外增加结晶体的方向. 这种方向梯度与线和绘制过程有关.

科学领域:

材料科学材料科学材料科学
织工程织工程织工程
聚合物科学聚合物科学

背景情况:

像Ioncell-F这样的再生纤维素纤维在织工业中至关重要.
了解它们的微观结构特性是优化纤维性能的关键.
以前的研究往往缺乏纳米级的详细横截面分析.

研究的目的:

为了研究Ioncell-F纤维中的微观结构均性和晶体质的方向.
为了将结构发现与干湿线和绘制过程相关联.
利用先进的X射线散射技术进行细致的纤维分析.

主要方法:

扫描广角X射线散射 (WAXS) 用一个介光X射线束.
分析晶体布拉格点强度的亚齐穆斯角依赖.
纤维微结构的截面检查.

主要成果:

离子细胞-F纤维在500nm长度尺度上表现出同质性.
观察到结晶体方向的辐射梯度,随着距离光纤中心的距离而增加.
纤维结晶度在横截面上保持同质.

结论:

观察到的方向梯度归因于纤维挤出和绘制过程中的速度梯度.
尽管方向有变化,但整体结晶性是均的,这表明有控制的纤维形成.
这些发现为再生纤维素纤维的结构性质关系提供了洞察力.

关键词:

晶体的生长晶体的生长结晶化结晶化的过程.材料科学材料科学材料科学纳米焦点X射线探测器探测器固体的特性固体的特性再生纤维素纤维的再生纤维素纤维.扫描WAXSS的扫描方式

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