Scholarlink

<p>Fibrillated cellulose, such as micro- and nanofibrillated cellulose (MNFC) and fines, plays a significant role in papermaking. However, characterizing its complex morphology across multiple scales remains challenging due to the limitations of conventional microscopy. Optical microscopy lacks the resolution to detect nanoscale fibrils, and electron and atomic force microscopy are limited by the trade-off between resolution and field of view. To overcome these limitations, we employed large-area transmission electron microscopic (TEM) imaging. The automatic stitching of thousands of images generated a single image as large as 523 × 886 µm<sup>2</sup>, enabling the visualization of both fibril length and width across multiple scales, from micrometers to nanometers. Moreover, large-area TEM imaging revealed distinct morphological differences between two samples that have previously been considered comparable by a standard optical method: one, slender and fibrillar, prepared by the aqueous counter collision method; the other, sheet-like with a broader size distribution, prepared by a grinder.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Large-area TEM imaging for characterization of fibrillated cellulose across microscale to nanoscale

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月20日

查看全文
  • Haruka Koizumi,
  • Takumi Kitagawa,
  • Kai Okubo,
  • Takuma Kozono,
  • Ryota Kose

摘要

Fibrillated cellulose, such as micro- and nanofibrillated cellulose (MNFC) and fines, plays a significant role in papermaking. However, characterizing its complex morphology across multiple scales remains challenging due to the limitations of conventional microscopy. Optical microscopy lacks the resolution to detect nanoscale fibrils, and electron and atomic force microscopy are limited by the trade-off between resolution and field of view. To overcome these limitations, we employed large-area transmission electron microscopic (TEM) imaging. The automatic stitching of thousands of images generated a single image as large as 523 × 886 µm2, enabling the visualization of both fibril length and width across multiple scales, from micrometers to nanometers. Moreover, large-area TEM imaging revealed distinct morphological differences between two samples that have previously been considered comparable by a standard optical method: one, slender and fibrillar, prepared by the aqueous counter collision method; the other, sheet-like with a broader size distribution, prepared by a grinder.