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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: email

Journal of Renewable Materials 2020, 8(1), 29-43. https://doi.org/10.32604/jrm.2020.07850

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-NH2), 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

Cellulose nanocrystals; amidation; reducing-end modification; Voight model; collision rate efficiency factor; rate constant

Cite This Article

APA Style
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. https://doi.org/10.32604/jrm.2020.07850
Vancouver Style
Chemin M, Moreau C, Cathala B, Villares A. Adsorption Behavior of Reducing End-Modified Cellulose Nanocrystals: A Kinetic Study Using Quartz Crystal Microbalance. J Renew Mater. 2020;8(1):29–43. https://doi.org/10.32604/jrm.2020.07850
IEEE Style
M. Chemin, C. Moreau, B. Cathala, and A. Villares, “Adsorption Behavior of Reducing End-Modified Cellulose Nanocrystals: A Kinetic Study Using Quartz Crystal Microbalance,” J. Renew. Mater., vol. 8, no. 1, pp. 29–43, 2020. https://doi.org/10.32604/jrm.2020.07850

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cc Copyright © 2020 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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