《Grafted nanocellulose and alkaline nanoparticles for the strengthening and deacidification of cellulosic artworks》 was published in Journal of Colloid and Interface Science in 2020. These research results belong to Xu, Q.; Poggi, G.; Resta, C.; Baglioni, M.; Baglioni, P.. Category: imidazoles-derivatives The article mentions the following:
Strongly degraded cellulosic artworks usually need deacidification and consolidation. Alk. nanoparticles are known to be effective in neutralizing the acidity, while cellulose nanocrystals have the potential to be used as compatible and effective strengthening agents. We have grafted cellulose nanocrystals with oleic acid using a 1’1-carbonyldiimidazole-mediated procedure, to increase their dispersibility in organic solvents, and synthesized Ca(OH)2 or CaCO3 nanoparticles via a solvothermal process. Grafted nanocellulose and alk. nanoparticles were used to prepare ethanol-based “”hybrids””. Prior to the application, the physico-chem. properties of nanocellulose dispersions and “”hybrids”” were studied by rheol. and small-angle X-ray scattering. Cellulose nanocrystals were effectively grafted and stably dispersed in ethanol. It was shown that the use of ethanol as a dispersing medium, and the addition of alk. nanoparticles act in a synergistic way, increasing the interactions between grafted cellulose nanocrystals, leading to the formation of clusters. These dispersions are thixotropic, a behavior particularly appealing to conservation purposes, since they can be applied in the liquid state, or, when a more confined application is required, they can be applied in a gel-like state. As a result of the application, an improvement in the mech. properties of paper and an increase of pH were obtained. In the experimental materials used by the author, we found Di(1H-imidazol-1-yl)methanone(cas: 530-62-1Category: imidazoles-derivatives)
Di(1H-imidazol-1-yl)methanone(cas: 530-62-1) is a peptide coupling reagent,it is used in the synthesis of peptides. Reacts readily with carboxylic acids to form acyl imidazoles; subsequent reaction with amines to form amides goes smoothly.Category: imidazoles-derivatives
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem