@Article{jrm.2020.07850,
AUTHOR = {Maud Chemin, Céline Moreau, Bernard Cathala, Ana Villares},
TITLE = {Adsorption Behavior of Reducing End-Modified Cellulose Nanocrystals: A Kinetic Study Using Quartz Crystal Microbalance},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {8},
YEAR = {2020},
NUMBER = {1},
PAGES = {29--43},
URL = {http://www.techscience.com/jrm/v8n1/38254},
ISSN = {2164-6341},
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<sub>2</sub>), 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.},
DOI = {10.32604/jrm.2020.07850}
}