Accessibility of the functional groups of chitosan aerogel probed by FT-IR-monitored deuteration

Authors :: Edoardo Garrone
Françoise Quignard
Barbara Bonelli
Francesco Di Renzo
Romain Valentin
Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM)
Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)
Dipartimento di Scienza dei Materiali e Ingegneria Chimica
Politecnico di Torino = Polytechnic of Turin (Polito)
Source :: Biomacromolecules, Biomacromolecules, American Chemical Society, 2007, 8 (12), pp.3646-3650. ⟨10.1021/bm070391a⟩
Publication Year :: 2007
Abstract: International audience; Transmission FT-IR spectroscopy allowed to monitor the deuteration of wafers of chitosan aerogel and xerogel by D2O vapor at room temperature. The complete deuteration of the alcohol and amine groups of the aerogel (surface area 175 m2 g-1 as measured by N2 volumetry) confirmed the high accessibility of the functional groups of the polymer. The xerogel (surface area 5 m2 g-1) was only partially deuterated in more severe conditions. The isotopic shift of the deuterated groups allowed to confirm or revise some attributions of infrared bands of chitosan.

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