Abstract
Abstract
Atomic force microscopy (AFM) can be used to quantitatively study nanomaterials in different media, e.g. vacuum, air, or submerged in a liquid.
A technique was developed to study swelling of individual cellulose nanofibrils (CNFs) using AFM.
As a case study, CNFs with different degrees of crystallinity (DoC) were examined for swellability going from dry to wet (submerged in de-ionized water). Swelling was found to depend on DoC, but no significant correlation between fibril diameter and swellability was seen. Upon introduction of de-ionized water high DoC samples ($$65\pm 2\%$$
65
±
2
%
) were found to have a diameter increase of 34% on average, whereas low DoC ($$44\pm 2\%$$
44
±
2
%
) were found to have a diameter increase of 44% on average. A tested control, consisting of platinum nanowires on silisium, did not swell.
Graphic abstract
Funder
Norges Teknisk-Naturvitenskapelige Universitet
Norges Forskningsråd
NTNU Norwegian University of Science and Technology
Publisher
Springer Science and Business Media LLC
Cited by
20 articles.
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