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Article Dans Une Revue ACS Applied Bio Materials Année : 2020

Antimicrobial cellulose nanofibril porous materials obtained by supercritical impregnation of thymol

Résumé

This study presents the impregnation in supercritical carbon dioxide (scCO 2) of nanocellulose-based structures with thymol as a natural antimicrobial molecule to prepare bioactive biosourced materials. First, cellulose nanofibrils (CNFs) were used to produce four types of materials (nanopapers, cryogels from water or tert-butyl alcohol suspensions and aerogels) of increasing specific surface area up to 160 m 2 .g-1 thanks to the use of different processes, namely vacuum filtration, freeze-drying and supercritical drying. Secondly, these CNF-based structures were impregnated with thymol in scCO 2 medium using relatively low temperature and pressure of 40°C and 100 bars during 1 hour. The amount of impregnated thymol in the different CNF-materials was investigated by fluorescence spectroscopy, 13 C NMR analysis and gas
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Dates et versions

hal-03002985 , version 1 (13-11-2020)

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Clémentine Darpentigny, Pierre R Marcoux, Mathilde Menneteau, Bastien Michel, Florence Ricoul, et al.. Antimicrobial cellulose nanofibril porous materials obtained by supercritical impregnation of thymol. ACS Applied Bio Materials, 2020, 3 (5), pp.2965-2975. ⟨10.1021/acsabm.0c00033⟩. ⟨hal-03002985⟩
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