学術論文

基本情報

氏名 村瀬 浩貴
氏名(カナ) ムラセ ヒロキ
氏名(英語) Murase Hiroki
所属 大学 家政
職名 教授
researchmap研究者コード
researchmap機関

発行又は発表の年月

2025/12

学術論文名

Reversible and irreversible structural changes of cellulose microfibrils in single cotton fibers during the drying process (査読あり)

単著・共著の別

共著

発行雑誌等又は発表学会等の名称

Carbohydrate Polymers

369

開始ページ

124232

終了ページ

概要

Carbohydrate Polymers, 369, December 2025, 124232
Hiroki Murase, Kenich Funaki, Hiroyasu Masunaga, Taizo Kabe

Abstract

This study investigates the structural evolution of cellulose microfibrils in single cotton fibers during the drying process using simultaneous small- and wide-angle X-ray scattering (SAXS/WAXS) with synchrotron radiation. To examine reversible and irreversible changes, we systematically compared never-dried cotton (NDC) and rewetted cotton (RWC). Scattering profiles across a broad q-range revealed that NDC possesses a significantly thicker amorphous shell surrounding the crystalline core of cellulose microfibrils than RWC. Upon drying, both the crystallite size and crystallinity decreased; however, these changes were largely recovered upon rewetting. In contrast, the amorphous shell underwent irreversible densification and shrinkage. Based on the SAXS profiles and structural parameters derived from a core-shell-cylinder model, the drying process was categorized into three distinct stages. These findings emphasize the critical role of hydration history in determining the nanoscale architecture of cellulose microfibrils and provide new insights into the dynamic structural behavior of cellulose-based fibers.