Gellan Gum Microgels as Effective Agents for a Rapid Cleaning of Paper

ACS Applied Polymer Materials
Benedetta Di NapoliEmanuela Zaccarelli

Abstract

Microgel particles have emerged in the past few years as a favorite model system for fundamental science and for innovative applications ranging from the industrial to biomedical fields. Despite their potentialities, no works so far have focused on the application of microgels for cultural heritage preservation. Here we show their first use for this purpose, focusing on wet paper cleaning. Exploiting their retentive properties, microgels are able to clean paper, ensuring more controlled water release from the gel matrix, in analogy to their macroscopic counterpart, i.e., hydrogels. However, differently from these, the reduced size of microgels makes them suitable to efficiently penetrate in the porous structure of the paper and to easily adapt to the irregular surfaces of the artifacts. To test their cleaning abilities, we prepare microgels made of Gellan gum, a natural and widespread material already used as a hydrogel for paper cleaning, and apply them to modern and ancient paper samples. Combining several diagnostic methods, we show that microgels performances in the removal of cellulose degradation byproducts for ancient samples are superior to commonly employed hydrogels and water bath treatments. This is due to the compos...Continue Reading

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Citations

Oct 27, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Giovanni Del MonteEmanuela Zaccarelli
Mar 6, 2021·Physical Chemistry Chemical Physics : PCCP·Letizia TavagnaccoEmanuela Zaccarelli
Feb 2, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·S FrancoR Angelini
May 1, 2021·International Journal of Molecular Sciences·Silvia FrancoRoberta Angelini

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Methods Mentioned

BETA
infrared spectroscopy
scanning electron microscopy
Fluorescence microscopy
optical spectroscopy

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