结晶度
纤维素
无定形固体
纤维
散射
材料科学
衍射
纤维素纤维
小角X射线散射
再生纤维素
X射线晶体学
化学工程
复合材料
结晶学
光学
化学
物理
工程类
作者
Luigi Gentile,Herbert Sixta,Cinzia Giannini,Ulf Olsson
出处
期刊:IUCrJ
[International Union of Crystallography]
日期:2022-06-11
卷期号:9 (4): 492-496
被引量:4
标识
DOI:10.1107/s205225252200570x
摘要
Here, a new accurate approach is presented to quantify the degree of crystallinity of regenerated cellulose textile fibers using wide-angle X-ray scattering. The approach is based on the observation that the contributions to the scattering from crystalline and amorphous domains of the fibers can be separated due to their different degree of orientation with respect to the fiber direction. The method is tested on Ioncell-F fibers, dry jet wet spun with different draw ratios from an ionic liquid solution. The analysis output includes, apart from an accurate estimate of the fiber crystallinity, the degrees of orientation of the cellulose nanocrystals and the cellulose chains in the amorphous domains.
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