Solvent resistance of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) treated cellulose nanofiber film for flexible electronics

Kuang, Yudi; Chen, Gang; Ming, Siyi; Wu, Zhenfu; Fang, Zhiqiang

doi:10.1007/s10570-016-0906-1

Cited by 25 publications

(14 citation statements)

References 37 publications

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“…The XRD spectra of CNP and LCNPs are presented in Figure h. It can be found that all samples display intensity peaks at a 2θ value close to 14.8 and 22.7°, indicating that the inner pattern of cellulose I was not damaged during the oxidation and homogenization processes . Moreover, the CrI decreases with the increasing amount of lignin, which is owed to the amorphous nature of lignin (Figure S5).…”

Section: Resultsmentioning

confidence: 99%

Lignocellulose Enabled Highly Transparent Nanopaper with Tunable Ultraviolet-Blocking Performance and Superior Durability

Zhang

Yuan

Qian

et al. 2020

ACS Sustainable Chem. Eng.

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Lignin-containing cellulose nanopaper (LCNP) has emerged as a new generation of sustainable film for packaging and electronics. While compared with pure cellulose nanopaper (CNP), it still exhibits relatively lower transparency or declining mechanical performance, which greatly hinders its practical application. To address these issues, we reported a highly available route involving a TEMPO-mediated oxidation method followed by a homogenization process to prepare lignin-containing cellulose nanofibers (LCNFs) based on a lignocellulose material and then directly processed the LCNFs into a dense film (LCNP) via a mature papermaking process. Due to small fibers produced by this method, the resultant LCNP exhibits an ultrahigh visible light transmittance (∼91%) close to CNP. Moreover, the high lignin reservation (∼16%) endows the nanopaper excellent UVA-blocking efficiency (∼68%) and better environmental durability than CNP. The retaining lignin was found to serve as a reinforcing agent filled in LCNP, resulting in a significant improvement on toughness, wet mechanical property, and thermal stability. Overall, this fully biobased LCNP with outstanding performance is a promising candidate to replace conventional petroleum-based materials in the fields like flexible electronics, packaging, and protective products.

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Section: Resultsmentioning

confidence: 99%

Lignocellulose Enabled Highly Transparent Nanopaper with Tunable Ultraviolet-Blocking Performance and Superior Durability

Zhang

Yuan

Qian

et al. 2020

ACS Sustainable Chem. Eng.

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“…[47] After thoroughly washing in DI water, 1 wt% TEMPO-oxidized pulp was sonicated with a CV334 probe (VC505, SONICS & MATERIALS, INC.) for 30 min to reduce the wood fiber from macro to nanodimensions. [47] After thoroughly washing in DI water, 1 wt% TEMPO-oxidized pulp was sonicated with a CV334 probe (VC505, SONICS & MATERIALS, INC.) for 30 min to reduce the wood fiber from macro to nanodimensions.…”

Section: Methodsmentioning

confidence: 99%

“…Preparation of Conductive CNF : TEMPO‐oxidized pulp was prepared by dispersing bleached softwood pulp in deionized water followed by a TEMPO‐oxidation treatment as we proposed in our previous study . After thoroughly washing in DI water, 1 wt% TEMPO‐oxidized pulp was sonicated with a CV334 probe (VC505, SONICS & MATERIALS, INC.) for 30 min to reduce the wood fiber from macro to nanodimensions.…”

Section: Methodsmentioning

confidence: 99%

Conductive Cellulose Nanofiber Enabled Thick Electrode for Compact and Flexible Energy Storage Devices

Kuang

Chen

Pastel

et al. 2018

Advanced Energy Materials

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173

133

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the current collector. Recently, progresses have been made in thick electrode architecture design by incorporating external magnetic fields and carbon templates for fast charge transfer kinetics, but the complicated producing processes and fragile electrode mechanical properties limit their ability for practical applications. [10][11][12][13][14][15] Fiber like carbon materials with large aspect ratio, such as carbon nanotubes (CNT), can significantly improve electrode mechanical strength and energy density due to its excellent electron conductivity and good compatibility to form continuous network with lower electrical percolation threshold. [16][17][18][19] Nonetheless, CNT is still constrained to complicated syntheses by expensive or low throughput methods which limits their application in bunch commercial products.Cellulose nanofiber (CNF) as an emerging biomass binder shows great potential in field of flexible and freestanding electrode fabrication due to its 1D nanostructure, excellent electrochemical stability, and robust mechanical property. [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] However, conventional CNFbased electrodes are characterized by low energy density owing to inadequate conductivity arising from the poor compatibility between CNF and conductive agents. Here, we report a conductive nanofiber network with decoupled electron and ion transfer pathways based on neutral carbon black (CB) nanoparticles and negatively charged CNF for high-loading thick electrode (up to 60 mg cm −2 ). This unique conductive CNF is achieved by a spontaneous electrostatic self-assembly technology as shown in Figure 1a. Microsize cellulose pulp was pretreated by 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) oxidization, which selectively oxidized the C6-hydroxyl group to a carboxyl group, leading to a strong negatively charged surface of the cellulose fibers. Negatively charged CNF was then obtained by disintegrating the microsized cellulose fiber down to the nanoscale by a probe sonication process for 1 h (Figures S1-S5, Supporting Information). Such negatively charged CNF can firmly absorb neutral CB nanoparticles by electrostatic attraction, forming a conformal conductive nanofiber. The conductive CNF can further assemble into an interconnected 3D network and tightly wrap the active electrode materials such as lithium iron phosphate (LFP) during the freeze-drying process (Figure 1b).Thick electrodes are appealing for high energy density devices but succumb to sluggish charge transfer kinetics and poor mechanical stability. Nanomaterials with large aspect ratio, such as carbon nanotubes, can help improve the charge transfer and strength of thick electrodes but represent a costly solution which hinders their utility outside of "lab scale production." Here, a conductive nanofiber network with decoupled electron and ion transfer pathways by the conformal electrostatic assembly of neutral carbon black particles on negatively charged cellulose nanofibers is reported. After integrating with ...

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“…As shown in Figure 2g, three peaks at 2θ = 14.6°, 16.5°, and 22.4°correspond to the (1−10), (110), and (200) lattice planes, respectively, which suggest that the prepared NFC exhibits a typical cellulose I crystalline form. 35 With regard to CNTs, a peak at 2θ = 26°assigns to the (002) lattice plane, but the intensity of the peak becomes so weak in the CNT10 composite film. Furthermore, the effect of CNTs on the index of crystallinity (CrI) of NFC in the composite film was studied.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Flexible and Highly Sensitive Humidity Sensor Based on Cellulose Nanofibers and Carbon Nanotube Composite Film

et al. 2019

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Flexible and highly sensitive humidity sensors are crucial for humidity detection. In this study, a flexible cellulose nanofiber/carbon nanotube (NFC/CNT) humidity sensor with high sensitivity performance was developed via fast vacuum filtration. CNTs were well dispersed in water by using 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO)-oxidized NFC as a dispersant. More importantly, NFC also acted as a humidity sensitive material, achieving superior performance of NFC/CNT humidity sensors. The obtained NFC/CNT humidity sensor with 5 wt % CNT loading exhibits outstanding sensitive performance, and its response value reaches a maximum of 69.9% (ΔI/I 0) at 95% relative humidity (RH). It also displays good bending resistance and long-term stability. In addition, the NFC/CNT humidity sensor was employed to monitor human breath. Therefore, we believe that the flexible, highly sensitive, and simply designed NFC/CNT humidity sensor is a promising candidate for various applications in the field of humidity measurement.

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Solvent resistance of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) treated cellulose nanofiber film for flexible electronics

Cited by 25 publications

References 37 publications

Lignocellulose Enabled Highly Transparent Nanopaper with Tunable Ultraviolet-Blocking Performance and Superior Durability

Lignocellulose Enabled Highly Transparent Nanopaper with Tunable Ultraviolet-Blocking Performance and Superior Durability

Conductive Cellulose Nanofiber Enabled Thick Electrode for Compact and Flexible Energy Storage Devices

Flexible and Highly Sensitive Humidity Sensor Based on Cellulose Nanofibers and Carbon Nanotube Composite Film

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