| DOI | Trouver le DOI : https://doi.org/10.1021/sc3001367 |
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| Auteur | Rechercher : Lam, Edmond1; Rechercher : Leung, Alfred C. W.1; Rechercher : Liu, Yali1; Rechercher : Majid, Ehsan1; Rechercher : Hrapovic, Sabahudin1; Rechercher : Male, Keith B.1; Rechercher : Luong, John H. T.1 |
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| Affiliation | - Conseil national de recherches du Canada. Institut de recherche en biotechnologie du CNRC
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| Format | Texte, Article |
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| Sujet | Nanocrystalline cellulose; Raman spectroscopy; persulfate; sulfate; sulfuric acid |
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| Résumé | A one-pot green procedure for the treatment of cellulosic biomass with ammonium persulfate (APS) was developed for the synthesis of highly crystalline carboxylated nanocrystalline cellulose (NCC–COOH), an emerging nanomaterial with a plethora of diversified applications. Raman spectroscopy proved applicable for monitoring the fate of APS and its two byproducts during the production of NCC–COOH from microcrystalline cellulose (MCC). The two main byproducts were then identified and quantified as ammonium sulfate (AS) and H₂SO₄ with the latter accounted for 60% of the total sulfate ions in solution. On the basis of such findings, one-step neutralization of H₂SO₄ and NCC with NH₄OH immediately after reaction was implemented for the formation of additional AS, followed by its quantitative recovery by precipitation. This was a very effective and critical step in waste stream management and cost reduction for the large scale production of NCC. In addition, the process resulted in highly crystalline NCC with COO⁻NH₄⁺ groups, a nanomaterial with improved dispersion and thermal characteristics over NCC with COOH and COO⁻Na⁺ groups. |
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| Date de publication | 2012-12-17 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro du CNRC | NRCC 55425 |
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| Numéro NPARC | 21268410 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 80becf3c-b467-4b58-81e8-6753d02ee465 |
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| Enregistrement créé | 2013-07-10 |
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| Enregistrement modifié | 2020-04-21 |
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