Journal
RSC ADVANCES
Volume 8, Issue 7, Pages 3619-3625Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra11134g
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Funding
- National Natural Science Foundation of China [21766002]
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control [KF201608, ZR201603]
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Bleached softwood pulp was used to prepare nanofibrillated cellulose (NFC) by mechanical grinding and a high-pressure homogenization process. Acetylation improved the aspect ratio and dispersion of the NFC; however, highly acetylated NFC was not able to form a film by vacuum filtration if the NFC : acetic anhydride (AA) ratio was greater than 1 : 6. An NFC film prepared by acetylated NFC has potential as a flexible organic light-emitting device (FOLED) substrate. Acetylation improved the thermal stability and transmittance of NFC films, which were optimal at 5.43 ppm K-1 and 65%, respectively, when the ratio of NFC : AA was 1 : 3. Moreover, both the mechanical properties and flexibility of the NFC films were well maintained when the NFC : AA ratio was 1 : 3. Additionally, all NFC films prepared by acetylated NFC were smooth, flat, and uniform.
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