Effect of heat treatment on the structure, piezoelectricity and actuation behavior of a cellulose electroactive-paper actuator

Mahadeva, Suresha K.; Lee, Sang‐Woo; Kim, Jaehwan

doi:10.1016/j.actamat.2007.12.042

Cited by 21 publications

(10 citation statements)

References 35 publications

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“…When the added CNF concentrations were increased, almost all of the tensile strengths of the all-cellulose nanocomposites also were increased. This tendency was consistent with the results given in a previous report [ 26 , 63 ]. When viewing the tensile strengths of the nanocomposite films with different CNF concentrations, the Composite-E films were better than the Composite-A films.…”

Section: Resultssupporting

confidence: 94%

Value-Added Utilization of Wheat Straw: From Cellulose and Cellulose Nanofiber to All-Cellulose Nanocomposite Film

Bian

Yang

et al. 2022

Membranes

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To accelerate the high value-added usage of agricultural residue, cellulose and cellulose nanofibers (CNFs) were extracted from wheat straw and then formed into all-cellulose nanocomposite films. The acid–alkali method (AM) and the extraction method (EM) were respectively adopted to prepare wheat straw cellulose (WSC), and the TEMPO oxidation method was used to extract CNFs. The nanocomposite films were fabricated by dissolving WSC and adding different CNF contents of 0.0, 0.5, 1.5, and 3.0%. There was a better miscibility for the all-cellulose nanocomposite film prepared by EM (Composite-E) compared to that for the all-cellulose nanocomposite film prepared by AM (Composite-A). Composite-E also showed a better optical transparency than Composite-A. The thermal stability of the two RWSCs presented contrary results when the CNFs were added, indicating a higher thermal stability for Composite-E than for Composite-A. This should have determined the properties of the films in which Cellulose I and Cellulose II coexisted for the all-cellulose nanocomposite films, and the forming mechanism of Cellulose II and crystallinity were determined by the cellulose-extracting method. X-ray diffraction (XRD) and Fourier-transform infrared (FT-IR) spectroscopy also showed that there was more Cellulose I in Composite-E than in Composite-A. The results are expected to enrich the data for deep processing of agricultural residues.

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Section: Resultssupporting

confidence: 94%

Value-Added Utilization of Wheat Straw: From Cellulose and Cellulose Nanofiber to All-Cellulose Nanocomposite Film

Bian

Yang

et al. 2022

Membranes

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“…The micro-scale creep deformation is responsible for the changes in the EAPap structure [ 35 ]. The effects of heat treatment, Li + ions, and solvent mixture on the structure, performance, properties, piezoelectricity, and actuation behavior have also been reported [ 36 , 37 , 38 , 39 ].…”

Section: Cellulose Eapapmentioning

confidence: 99%

“…The electrically aligned regenerated cellulose films showed a higher in-plane piezoelectric constant due to the increased crystallinity index [ 41 ]. The heat treatment of the EAPap specimen also improved the piezoelectric effect as compared to the specimen with no heat treatment [ 36 ]. To understand the dielectric behavior of EAPap as a novel piezoelectric material, Yun et al [ 42 ] revealed that the dielectric constant of EAPap was frequency and temperature dependent.…”

Section: Cellulose Eapapmentioning

confidence: 99%

Recent Progress on Cellulose-Based Electro-Active Paper, Its Hybrid Nanocomposites and Applications

Khan

Abas

Kim

et al. 2016

Sensors

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We report on the recent progress and development of research into cellulose-based electro-active paper for bending actuators, bioelectronics devices, and electromechanical transducers. The cellulose electro-active paper is characterized in terms of its biodegradability, chirality, ample chemically modifying capacity, light weight, actuation capability, and ability to form hybrid nanocomposites. The mechanical, electrical, and chemical characterizations of the cellulose-based electro-active paper and its hybrid composites such as blends or coatings with synthetic polymers, biopolymers, carbon nanotubes, chitosan, and metal oxides, are explained. In addition, the integration of cellulose electro-active paper is highlighted to form various functional devices including but not limited to bending actuators, flexible speaker, strain sensors, energy harvesting transducers, biosensors, chemical sensors and transistors for electronic applications. The frontiers in cellulose paper devices are reviewed together with the strategies and perspectives of cellulose electro-active paper and cellulose nanocomposite research and applications.

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“…The crystallinity indexes estimated from Equation (2) for untreated and treated cotton fibers, comparing to the corresponding crystallinity values of the obtained nanocomposites, are exhibited in Table 1. The observed crystallinity increase suggests that heating at 160-170 • C and the chemical treatment applied to the cotton fibers had a clear effect on the cellulose structure [26][27][28][29]. These results point out that the copper nanoparticles synthesized with contents of 2.5 g and 5.0 g of the precursor salt tend to eliminate the amorphous phase of cellulose, increasing the crystalline phase.…”

Section: X-ray Diffractionmentioning

confidence: 80%

Green Synthesis of Copper Nanoparticles Using Cotton

Pérez-Álvarez¹,

Cadenas‐Pliego²,

Pérez‐Camacho³

et al. 2021

Polymers

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Copper nanoparticles (CuNP) were obtained by a green synthesis method using cotton textile fibers and water as solvent, avoiding the use of toxic reducing agents. The new synthesis method is environmentally friendly, inexpensive, and can be implemented on a larger scale. This method showed the cellulose capacity as a reducing and stabilizing agent for synthetizing Cellulose–Copper nanoparticles (CCuNP). Nanocomposites based on CCuNP were characterized by XRD, TGA, FTIR and DSC. Functional groups present in the CCuNP were identified by FTIR analysis, and XRD patterns disclosed that nanoparticles correspond to pure metallic Cu°, and their sizes are at a range of 13–35 nm. Results demonstrated that CuNPs produced by the new method were homogeneously distributed on the entire surface of the textile fiber, obtaining CCuNP nanocomposites with different copper wt%. Thus, CuNPs obtained by this method are very stable to oxidation and can be stored for months. Characterization studies disclose that the cellulose crystallinity index (CI) is modified in relation to the reaction conditions, and its chemical structure is destroyed when nanocomposites with high copper contents are synthesized. The formation of CuO nanoparticles was confirmed as a by-product, through UV spectroscopy, in the absorbance range of 300–350 nm.

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Effect of heat treatment on the structure, piezoelectricity and actuation behavior of a cellulose electroactive-paper actuator

Cited by 21 publications

References 35 publications

Value-Added Utilization of Wheat Straw: From Cellulose and Cellulose Nanofiber to All-Cellulose Nanocomposite Film

Value-Added Utilization of Wheat Straw: From Cellulose and Cellulose Nanofiber to All-Cellulose Nanocomposite Film

Recent Progress on Cellulose-Based Electro-Active Paper, Its Hybrid Nanocomposites and Applications

Green Synthesis of Copper Nanoparticles Using Cotton

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