Adjustable strength and toughness of dual cross-linked nanocellulose films via spherical cellulose as soft-phase

Zhao, Kaixuan; Li, Ruonan; Qi, Wenhui; Tian, Xiaojing; Zhang, Zhisheng; Wang, Yang; Zhang, Yafei; Zhang, Hongjie; Wang, Wenhang

doi:10.1016/j.carbpol.2023.121708

Cited by 7 publications

(2 citation statements)

References 41 publications

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“…The characteristic peak of Ag 3d corresponds to the Ag element in EDS, confirming that Ag + is reduced by PDA to form Ag. These spectra and diffraction analyses provide conclusive evidence for the in situ doping of Ag + into the wood fiber composite matrix. , Figure g indicates that CNFs and the composite retain the typical diffraction peaks of cellulose at 16.2 and 22.3, whereas the Ag/PDA/CNF composites exhibit diffraction peaks of Ag at 38.2 and 44.2, corresponding to the crystal planes of cubic silver crystals (111) and (200), respectively. The intensity of the crystal plane (111) is more pronounced.…”

Section: Resultsmentioning

confidence: 70%

“…These spectra and diffraction analyses provide conclusive evidence for the in situ doping of Ag + into the wood fiber composite matrix. 43,44 Figure 2g indicates that CNFs and the composite retain the typical diffraction peaks of cellulose 45 In Figure 3c, Ag/PDA/CNF with a 5% Ag content exhibits the best output performance. Figure 3d− The surface potential of Ag/PDA/CNF, at 1069 mV, is 13% higher than that of the PDA/CNF composite (946 mV), as shown in Figure 3g.…”

Section: ■ Introductionmentioning

confidence: 94%

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Wood Fiber-Based Triboelectric Material with High Filtration Efficiency and Antibacterial Properties and Its Respiratory Monitoring in Mask

Sun,

Yuan,

Zhu

et al. 2024

ACS Omega

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Self-powered wearable electronic products have rapidly advanced in the fields of sensing and health monitoring, presenting greater challenges for triboelectric materials. The limited surface polarity and structural defects in wood fibers restrict their potential as substitutes for petroleum-based materials. This study used bagasse fiber as the raw material and explored various methods, including functionalizing cellulose nanofibrils (CNFs) with polydopamine (PDA), in situ embedding of silver particles, filtration, and freezedrying. These methods aimed to enhance the triboelectric output, antibacterial properties, and filtration properties of lignocellulosic materials. The Ag/PDA/CNF-based triboelectric nanogenerator (TENG) demonstrated an open-circuit voltage of 211 V and a short-circuit current of 18.1 μA. An aerogel prepared by freeze-drying the Ag/PDA/CNF material, combined with a polyvinylidene fluoride nanofiber structure fabricated by electrospinning, constitutes the TENG unit. A self-powered respiratory detection mask was created using this combination, achieving a filtration efficiency of 94.23% for 0.3 μm particles and an antibacterial rate exceeding 99%. In addition, it effectively responded to respiratory frequency signals of slow breathing, normal breathing, and shortness of breath, with the output electrical signal correlating with the respiratory frequency. This study considerably contributes to advancing wood fiber-based triboelectric materials as alternatives to petroleumderived materials in self-powered wearable electronic products for medical applications.

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Section: Resultsmentioning

confidence: 70%

Section: ■ Introductionmentioning

confidence: 94%