Improvement of the Thermal Stability of TEMPO‐Oxidized Cellulose Nanofibrils by Heat‐Induced Conversion of Ionic Bonds to Amide Bonds
- 17 May 2016
- journal article
- research article
- Published by Wiley in Macromolecular Rapid Communications
- Vol. 37 (13), 1033-1039
- https://doi.org/10.1002/marc.201600186
Abstract
Improving thermal stability of TEMPO‐oxidized cellulose nanofibrils (TOCNs) is a major challenge for the development and preparation of new nanocomposites. However, thermal degradation of TOCNs occurs at 220 °C. The present study reports a simple way to improve thermal stability of TOCNs by the heat‐induced conversion of ionic bonds to amide bonds. Coupling amine‐terminated polyethylene glycol to the TOCNs is performed through ionic bond formation. Films are produced from the dispersions by the casting method. Infrared spectroscopy and thermogravimetric analysis confirm conversion of ionic bonds to amide bonds for the modified TOCN samples after heating. As a result, improvement of TOCNs' thermal stability by up to 90 °C is successfully achieved.Keywords
Funding Information
- Japan Society for the Promotion of Science (JSPS) Postdoctoral Fellowship for Overseas Researchers (P14083)
- JSPS Grant-in-Aid for Scientific Research B (15H04524)
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