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Acetylation improves thermal stability and transmittance in FOLED substrates based on nanocellulose films.

ABSTRACT: 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.

SUBMITTER: Yang S

PROVIDER: S-EPMC9077702 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

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Acetylation improves thermal stability and transmittance in FOLED substrates based on nanocellulose films.

Yang Shuang S Xie Qiuxia Q Liu Xiuyu X Wu Min M Wang Shuangfei S Song Xueping X

RSC advances 20180117 7

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 ...[more]

PMID: 35542928

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