On the potential of using nanocellulose for consolidation of painting canvases
Journal article, 2018
Nanocellulose has been recently proposed as a novel consolidant for historical papers. Its use for painting canvas consolidation, however, remains unexplored. Here, we show for the first time how different nanocelluloses, namely mechanically isolated cellulose nanofibrils (CNF), carboxymethylated cellulose nanofibrils (CCNF) and cellulose nanocrystals (CNC), act as a bio-based alternative to synthetic resins and other conventional canvas consolidants. Importantly, we demonstrate that compared to some traditional consolidants, all tested nanocelluloses provided reinforcement in the adequate elongation regime. CCNF showed the best consolidation per added weight; however, it had to be handled at very low solids content compared to other nanocelluloses, exposing canvases to larger water volumes. CNC reinforced the least per added weight but could be used in more concentrated suspensions, giving the strongest consolidation after an equivalent number of coatings. CNF performed between CNC and CCNF. All nanocelluloses showed better consolidation than lining with synthetic adhesive (Beva 371) and linen canvas in the elongation region of interest.
Conservation
Cellulose nanofibrils (CNF)
Consolidation
Restoration
Cellulose nanocrystals (CNC)
Easel paintings
Author
Oleksandr Nechyporchuk
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Swerea
Krzysztof Kolman
University of Gothenburg
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Alexandra Bridarolli
Birkbeck University of London
Marianne Odlyha
Birkbeck University of London
Laurent Bozec
Birkbeck University of London
Marta Oriola
University of Barcelona
Gema Campo-Francés
University of Barcelona
Michael Persson
Chalmers, Chemistry and Chemical Engineering
Akzo Nobel - Pulp and Performance Chemicals
Krister Holmberg
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Romain Bordes
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Carbohydrate Polymers
0144-8617 (ISSN)
Vol. 194 161-169Subject Categories
Polymer Chemistry
Food Engineering
Polymer Technologies
DOI
10.1016/j.carbpol.2018.04.020