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Nanomaterials for Combined Stabilisation and Deacidification of Cellulosic Materials-The Case of Iron-Tannate Dyed Cotton. | LitMetric

AI Article Synopsis

  • The conservation of textiles is challenging due to their rapid degradation from acidity and complex structures, requiring multi-scale remediation techniques.
  • Recent advancements have introduced nanomaterials like inorganic nanoparticles and nanocellulose as effective alternatives for strengthening and deacidifying cellulose-based textiles.
  • In a study using iron-tannate dyed cotton, a deacidification step with CaCO nanoparticles was essential before applying nanocellulose and silica nanoparticles for mechanical strengthening, with evaluations done through tensile testing and structural analysis.

Article Abstract

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 CaCO 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.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7279213PMC
http://dx.doi.org/10.3390/nano10050900DOI Listing

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