Nanomaterials for combined stabilisation and deacidification of cellulosic materials - the case of iron-tannate dyed cotton
Journal article, 2020
The conservation of textiles is a challenge due to the often fast degradation that results from the acidity combined with a complex structure that requires remediation actions to be conducted at several length scales. Nanomaterials have lately been used for various purposes in the conservation of cultural heritage. The advantage with these materials is their high efficiency combined with a great control. Here, we provide an overview of the latest developments in terms of nanomaterials-based alternatives, namely inorganic nanoparticles and nanocellulose, to conventional methods for the strengthening and deacidification of cellulose-based materials. Then, using the case of iron-tannate dyed cotton, we show that conservation can only be addressed if the mechanical strengthening is preceded by a deacidification step. We used CaCO3 nanoparticles to neutralize the acidity, while the stabilisation was addressed by a combination of nanocellulose, and silica nanoparticles, to truly tackle the complexity of the hierarchical nature of cotton textiles. Silica nanoparticles enabled strengthening at the fibre scale by covering the fibre surface, while the nanocellulose acted at bigger length scales. The evaluation of the applied treatments, before and after an accelerated ageing, was assessed by tensile testing, the fibre structure by SEM and the apparent colour changes by colourimetric measurements.
Stabilisation
Paper
Acid-catalysed degradation
Canvas
Deacidification
Iron-tannate dye
Nanoparticle
Author
Nicoletta Palladino
Swedish National Heritage Board
Marei Hacke
Swedish National Heritage Board
Giovanna Poggi
University of Florence
Oleksandr Nechyporchuk
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Swerea
Krzysztof Kolman
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Nouryon
Qingmeng Xu
University of Florence
Michael Persson
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Nouryon Pulp and Performance Chemicals AB
R. Giorgi
University of Florence
Krister Holmberg
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
P. Baglioni
University of Florence
Romain Bordes
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Nanomaterials
20794991 (eISSN)
Vol. 10 5 900NANOmaterials for the REStoration of works of ART (NANORESTART)
European Commission (EC) (EC/H2020/646063), 2015-06-01 -- 2018-12-31.
Subject Categories
Paper, Pulp and Fiber Technology
Polymer Technologies
Textile, Rubber and Polymeric Materials
DOI
10.3390/nano10050900