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One-pot preparation of bi-functional cellulose nanofibrils
Wallenberg Wood Science Center, Sweden.
RISE - Research Institutes of Sweden (2017-2019), Bioeconomy, Biorefinery and Energy.
KTH Royal institute of technology, Sweden.
KTH Royal institute of technology, Sweden.
2018 (English)In: Cellulose, ISSN 0969-0239, E-ISSN 1572-882XArticle in journal (Refereed) Published
Abstract [en]

Herein, we present a route to obtain bi-functional cellulose nanofibrils (CNF) by a one-pot approach using an already established functionalisation route, carboxymethylation, to which a subsequent functionalisation step, allylation or alkynation, has been added in the same reaction pot, eliminating the need of solvent exchange procedures. The total charge of the fibres and the total surface charge of the nanofibrils were determined by conductometric and polyelectrolyte titration, respectively. Furthermore, the allyl and alkyne functionalised cellulose were reacted with methyl 3-mercaptopropionate and azide-functionalised disperse red, respectively, to estimate the degree of functionalisation. The samples were further assessed by XPS and FT-IR. Physical characteristics were evaluated by CP/MAS 13C-NMR, XRD, AFM and DLS. This new approach of obtaining bi-functionalised CNF allows for a facile and rapid functionalisation of CNF where chemical handles can easily be attached and used for further modification of the fibrils. Graphical abstract: [Figure not available: see fulltext.

Place, publisher, year, edition, pages
Springer Netherlands , 2018.
Keywords [en]
Allylation, Chemical modification, Nanofibers, Polyelectrolytes, 3-mercaptopropionate
National Category
Paper, Pulp and Fiber Technology Nano Technology
Identifiers
URN: urn:nbn:se:ri:diva-35536DOI: 10.1007/s10570-018-2066-yScopus ID: 2-s2.0-85054565647OAI: oai:DiVA.org:ri-35536DiVA, id: diva2:1259584
Note

cited By 0; Article in Press

Available from: 2018-10-30 Created: 2018-10-30 Last updated: 2022-05-10Bibliographically approved

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Publisher's full textScopushttps://link.springer.com/article/10.1007%2Fs10570-018-2066-y
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Biorefinery and Energy
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Cellulose
Paper, Pulp and Fiber TechnologyNano Technology

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