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Gamma-Irradiation of Cellulose Nanocrystal (CNS): Investigation ofPhysicochemical Properties for Irradiated CNC/ALGINATE Based Beads

Criado, Paula; Fraschini, Carole; Jamshidian, Majid; Salmieri, Stéphane; Lacroix, Monique (2016). Gamma-Irradiation of Cellulose Nanocrystal (CNS): Investigation ofPhysicochemical Properties for Irradiated CNC/ALGINATE Based Beads In: Report of the 3rd RCM of the CRP on Application of Radiation Technology in the Development of Advanced Packaging Materials for Food Products. IAEA-TECDOC . IAEA, Vienne, Autriche, p. 117-138.

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Résumé

Irradiation was performed in dispersed suspensions of cellulosenanocrystals (CNCs). A formation of carboxylic acid and aldehyde groups was observed when gamma irradiation doses were applied from 0 to 80 kGy. Changes in FTIR spectra confirmed the changes of CNC upon irradiation treatment at wavelengths of 1750 and 1650 cm-1of ketones and adsorbed water on CNC surface respectively. These new functional groups improved hydrophilic character of CNC, tested by the decrease of interaction angle between irradiated CNC films and droplet of water. Concerning the degree of polymerization (DP) of CNC, it was found by gel permeation chromatography that DP decreases from 135 (native) to 95 (80 kGy CNC). It was suggested that low molecular weight of CNC and high aldehyde content may enhance the antiradical properties observed in irradiated CNC compared to native CNC.

Type de document: Chapitre de livres
Informations complémentaires: 11-15 July 2016. Chapter 8. The CRP was constituted with 14 participants. The achievements are presented in this final report, giving first the background information and the list of publication by participants, followed by individual full reports. The IAEA wishes to thank all participants of the CRP for their valuable contributions. The IAEA officer responsible for this CRP was Agnes Safrany of the Division of Physical and Chemical Sciences.
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Centre: Centre INRS-Institut Armand Frappier
Date de dépôt: 13 mars 2019 03:33
Dernière modification: 13 mars 2019 03:45
URI: http://espace.inrs.ca/id/eprint/5964

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