Open Access
ARTICLE
Adsorption Behavior of Reducing End-Modified Cellulose Nanocrystals: A Kinetic Study Using Quartz Crystal Microbalance
Maud Chemin, Céline Moreau, Bernard Cathala, Ana Villares*
INRAE, UR BIA, F-44316, Nantes, France
* Corresponding Author: Ana Villares. Email:
Journal of Renewable Materials 2020, 8(1), 29-43. https://doi.org/10.32604/jrm.2020.07850
Received 05 July 2019; Accepted 08 October 2019; Issue published 01 January 2020
Abstract
In this work, we studied the adsorption of modified cellulose nanocrystals onto solid surfaces by quartz crystal microbalance with dissipation monitoring
(QCM-D). Cellulose nanocrystals obtained from tunicate (CNC) were modified at
reducing end by amidation reactions. Two different functionalities were investigated: a polyamine dendrimer (CNC-NH
2), which interacts with gold surface
by the amine groups; and a biotin moiety (CNC-Biot), which has a strong affinity
for the protein streptavidin (SAV). QCM-D results revealed different adsorption
behaviors between modified and unmodified CNCs. Hence, unmodified CNCs
covered almost all the surface forming a rigid and flat layer whereas reducing
end modified CNCs remained rather upright forming a hydrated and viscoelastic
layer with lower surface coverage. The analysis of adsorption kinetics allowed the
calculation of an apparent collision rate factor, which resulted 10-fold higher for
unmodified CNCs compared to reducing end modified CNCs, therefore, demonstrating the different adsorption behavior.
Keywords
Cite This Article
Chemin, M., Moreau, C., Cathala, B., Villares, A. (2020). Adsorption Behavior of Reducing End-Modified Cellulose Nanocrystals: A Kinetic Study Using Quartz Crystal Microbalance.
Journal of Renewable Materials, 8(1), 29–43.
Citations