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@ARTICLE{Grachev:1024591,
author = {Grachev, Vladimir and Deschaume, Olivier and Lang, Peter R.
and Lettinga, M.P. and Bartic, Carmen and Thielemans, Wim},
title = {{D}imensions of {C}ellulose {N}anocrystals from {C}otton
and {B}acterial {C}ellulose: {C}omparison of {M}icroscopy
and {S}cattering {T}echniques},
journal = {Nanomaterials},
volume = {14},
number = {5},
issn = {2079-4991},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2024-02265},
pages = {455 -},
year = {2024},
abstract = {Different microscopy and scattering methods used in the
literature to determine the dimensions of cellulose
nanocrystals derived from cotton and bacterial cellulose
were compared to investigate potential bias and
discrepancies. Atomic force microscopy (AFM), small-angle
X-ray scattering (SAXS), depolarized dynamic light
scattering (DDLS), and static light scattering (SLS) were
compared. The lengths, widths, and heights of the particles
and their respective distributions were determined by AFM.
In agreement with previous work, the CNCs were found to have
a ribbon-like shape, regardless of the source of cellulose
or the surface functional groups. Tip broadening and
agglomeration of the particles during deposition cause
AFM-derived lateral dimensions to be systematically larger
those obtained from SAXS measurements. The radius of
gyration determined by SLS showed a good correlation with
the dimensions obtained by AFM. The hydrodynamic lateral
dimensions determined by DDLS were found to have the same
magnitude as either the width or height obtained from the
other techniques; however, the precision of DDLS was limited
due to the mismatch between the cylindrical model and the
actual shape of the CNCs, and to constraints in the fitting
procedure. Therefore, the combination of AFM and SAXS, or
microscopy and small-angle scattering, is recommended for
the most accurate determination of CNC dimensions.},
cin = {IBI-4},
ddc = {540},
cid = {I:(DE-Juel1)IBI-4-20200312},
pnm = {5243 - Information Processing in Distributed Systems
(POF4-524)},
pid = {G:(DE-HGF)POF4-5243},
typ = {PUB:(DE-HGF)16},
pubmed = {38470785},
UT = {WOS:001183051800001},
doi = {10.3390/nano14050455},
url = {https://juser.fz-juelich.de/record/1024591},
}