Heterogeneous deacetylation reaction of chitin under low-frequency ultrasonic irradiation - Université de technologie de Compiègne Access content directly
Journal Articles Carbohydrate Polymers Year : 2021

Heterogeneous deacetylation reaction of chitin under low-frequency ultrasonic irradiation

Abstract

Low-frequency ultrasonic irradiation was employed as a low cost technique for chitin's deacetylation at a relatively low-temperature range (below 70 °C) and a short reaction times (up to 120 min). Eley–Rideal mechanism and the power-law model were carried out to describe the mechanism of the reaction. The results indicated that the produced chitosan deacetylation degree (DD) was up to 87.73% under the optimum conditions compared to 66.82% using the conventional one (thermo-alkaline process). The Fourier Transform Infrared (FTIR) observations of the produced chitosan presented the same fingerprint as the commercial chitosan, X-Ray Diffraction (XRD), and Differential Scanning Calorimetry (DSC) studies show that the DD induced a lousy impact on the chitosan's thermal degradation and crystallinity index.
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Dates and versions

hal-04381875 , version 1 (09-01-2024)

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Endarto Yudo Wardhono, Mekro Permana Pinem, Indar Kustiningsih, Mohammad Effendy, Danièle Clausse, et al.. Heterogeneous deacetylation reaction of chitin under low-frequency ultrasonic irradiation. Carbohydrate Polymers, 2021, 267, pp.118180. ⟨10.1016/j.carbpol.2021.118180⟩. ⟨hal-04381875⟩
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