期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 37, 期 13, 页码 1033-1039出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201600186
关键词
amides; heat-induced conversion; ionic bonds; TEMPO-oxidized cellulose nanofibrils; thermal stability
资金
- Japan Society for the Promotion of Science (JSPS) [P14083]
- JSPS [15H04524]
- Core Research for Evolutional Science and Technology (CREST) program of the Japan Science and Technology Agency (JST)
- Grants-in-Aid for Scientific Research [15H04524] Funding Source: KAKEN
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 degrees 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 degrees C is successfully achieved.
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