Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 40, Pages 27081-27090Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b08616
Keywords
cellulose nanofiber; sodium carboxymethyl cellulose; alkalization and sodium acetoxylation; flexible electronics; magnetic permalloy device
Funding
- Fundamental Research Funds for the Central Universities [201522044]
- State Key Laboratory of Pulp and Paper Engineering [2016C08]
- Guangdong Province Youth Science and technology innovation talents [2014TQ01C781]
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We report a novel partial dissolution strategy to liberate uniform cellulose nanofibers with diameter of 5-10 nm from macroscopic cellulose fibers and promote separation of nanofibers in an aqueous environment by forming water-soluble sodium carboxymethylcellulose (CMC) through heterogeneous sodium acetoxylation of cellulose. With the obtained cellulose nanofibers, we fabricated nanopapers which exhibit high optical transparency of 90.5% (@550 nm) with promising mechanical properties and high thermal stability. By directly depositing Ag nanowires on a wet nanofiber sheet, we fabricated a flexible transparent electrode with 86.5% (@550 nm) transparency and 26.2 Omega/sq sheet resistance (R-s). Meanwhile, we studied the magnetic properties of sputter deposited thin film of permalloy on nanopaper which exhibited a similar magnetic coercivity and a close saturation magnetization to conventional silicon dioxide-based permalloy.
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