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Convertible cellulosic platforms with manageable loads of 1-hydroxybenzotriazole: their preparation and conductive behavior

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Abstract

A homogenous approach for manufacturing films composites that might be used as proton conducting membranes has been developed. This is attributable to cellulose acetate's excellent solubility in organic solvents, allowing it to incorporate heterocyclic nitrogen molecules such as 1-hydroxybenzotriazole (HOBt) in varied amounts. These films are quickly and conveniently converted to cellulose, making them prone to further TEMPO-oxidation on the surface, altering their properties, having a significant influence on overall morphology and proton conductivity. The surface features (contact angle, water uptake), morphology (scanning electron microscopy), and component compliance of all produced films were evaluated (FTIR). Furthermore, thermal characteristics show that the addition of HOBt seems to have no impact on the film's stability. As anticipated by molecular docking simulations, the composites based on TEMPO-oxidized matrix exhibited the best proton conductivity over a wide temperature range when measured using broadband dielectric spectroscopy.

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Acknowledgments

This work was supported by a grant of the Ministry of Research, Innovation and Digitization, CNCS/CCCDI—UEFISCDI, Project Number PN-III-P4-ID-PCE-2020-0476, within PNCDI III.

Funding

The funding was provided by Ministry of Research,Innovation and Digitization,CNCS/CCCDI-UEFISCDI (Grant No. PN-III-P4-ID-PCE-2020-0476).

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Madalina Elena Culica: Investigation, Writing—original draft, Methodology, Formal analysis, Data curation. Mihai Asandulesa: Investigation, Writing—original draft, Methodology, Formal analysis, Data curation. Andreea-Laura Chibac-Scutaru: Methodology, Data curation, Writing – original draft. Violeta Melinte: Data curation, Formal analysis. Corneliu Cojocaru: Investigation, Formal analysis, Data curation. Sergiu Coseri: Supervision, Investigation, Project administration, Conceptualization, Writing—review & editing.

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Correspondence to Sergiu Coseri.

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Culica, M.E., Chibac-Scutaru, AL., Asandulesa, M. et al. Convertible cellulosic platforms with manageable loads of 1-hydroxybenzotriazole: their preparation and conductive behavior. Cellulose 29, 9847–9863 (2022). https://doi.org/10.1007/s10570-022-04865-3

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  • DOI: https://doi.org/10.1007/s10570-022-04865-3

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