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.

Canvas

Stabilisation

Paper

Acid-catalysed degradation

Deacidification

Nanoparticle

Iron-tannate dye

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, Applied Surface Chemistry

Swerea

Krzysztof Kolman

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Applied Surface Chemistry

Nouryon

Qingmeng Xu

University of Florence

Michael Persson

Nouryon Pulp and Performance Chemicals AB

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

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 5 900

NANOmaterials for the REStoration of works of ART (NANORESTART)

European Commission (EC), 2015-06-01 -- 2018-12-31.

Subject Categories

Paper, Pulp and Fiber Technology

Polymer Technologies

Textile, Rubber and Polymeric Materials

DOI

10.3390/nano10050900

More information

Latest update

11/11/2020