TY - JOUR
T1 - Scanning WAXS microscopy of regenerated cellulose fibers at mesoscopic resolution
AU - Johansson, Sara
AU - Scattarella, Francesco
AU - Kalbfleisch, Sebastian
AU - Johansson, Ulf
AU - Ward, Christopher
AU - Hetherington, Crispin
AU - Sixta, Herbert
AU - Hall, Stephen
AU - Giannini, Cinzia
AU - Olsson, Ulf
PY - 2024/7
Y1 - 2024/7
N2 - In this work, regenerated cellulose textile fibers, Ioncell-F, dry-wet spun with different draw ratios, have been investigated by scanning wide-Angle X-ray scattering (WAXS) using a mesoscopic X-ray beam. The fibers were found to be homogeneous on the 500nm length scale. Analysis of the azimuthal angular dependence of a crystalline Bragg spot intensity revealed a radial dependence of the degree of orientation of crystallites that was found to increase with the distance from the center of the fiber. We attribute this to radial velocity gradients during the extrusion of the spin dope and the early stage of drawing. On the other hand, the fiber crystallinity was found to be essentially homogeneous over the fiber cross section.
AB - In this work, regenerated cellulose textile fibers, Ioncell-F, dry-wet spun with different draw ratios, have been investigated by scanning wide-Angle X-ray scattering (WAXS) using a mesoscopic X-ray beam. The fibers were found to be homogeneous on the 500nm length scale. Analysis of the azimuthal angular dependence of a crystalline Bragg spot intensity revealed a radial dependence of the degree of orientation of crystallites that was found to increase with the distance from the center of the fiber. We attribute this to radial velocity gradients during the extrusion of the spin dope and the early stage of drawing. On the other hand, the fiber crystallinity was found to be essentially homogeneous over the fiber cross section.
KW - crystal growth
KW - crystallization
KW - materials science
KW - nanofocus X-ray probe
KW - properties of solids Vetenskapsrådet
KW - regenerated cellulose fibers
KW - scanning WAXS
U2 - 10.1107/S205225252400383X
DO - 10.1107/S205225252400383X
M3 - Article
C2 - 38860956
AN - SCOPUS:85198179590
SN - 2052-2525
VL - 11
SP - 570
EP - 577
JO - IUCrJ
JF - IUCrJ
IS - Pt 4
ER -