Nanocellulose Reinforced Flexible Composite Nanogenerators with Enhanced Vibrational Energy Harvesting and Sensing Properties

Ram, Farsa; Gudadhe, Aniket; Vijayakanth, Thangavel; Aherrao, Swapnil; Borkar, Vivek; Boomishankar, Ramamoorthy; Shanmuganathan, Kadhiravan

doi:10.1021/acsapm.0c00158

Cited by 28 publications

(7 citation statements)

References 64 publications

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“…In this case, the vibration sensor is connected to the piezoelectric activity, showing that if piezoelectric coefficients will be enhanced, it is mostly due to the well-developed electro-active β-phase. Additionally, the vibration sensor provides higher values by means of sensitivity, which was detected on a real electrical device [44].…”

Section: Introductionmentioning

confidence: 94%

Vibration Sensing Systems Based on Poly(Vinylidene Fluoride) and Microwave-Assisted Synthesized ZnO Star-Like Particles with Controllable Structural and Physical Properties

et al. 2020

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This study deals with the effect of zinc oxide (ZnO) star-like filler addition to the poly(vinylidene fluoride) (PVDF) matrix, and its effect on the structural and physical properties and consequences to the vibration sensing performance. Microwave-assisted synthesis in open vessel setup was optimized for the preparation of the star-like shape of ZnO crystalline particles. The crystalline and star-like structure was confirmed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDX). Furthermore, the PVDF-based composites were prepared using a spin-coating technique from solution. An investigation of the transformation of the α crystalline phase to the β crystalline phase of the neat PVDF matrix and with various filler concentrations was performed using Fourier-Transform infrared (FTIR) spectroscopy, which shows an enhanced β-phase from 44.1% to 66.4% for neat PVDF and PVDF with 10 wt.% of particles, respectively. Differential scanning calorimetry (DSC) measurements and investigation showed enhanced crystallinity and melting enthalpy of the composite systems in comparison to neat PVDF, since ZnO star-like particles act as nucleating agents. The impact of the filler content on the physical properties, such as thermal and dynamic mechanical properties, which are critical for the intended applications, were investigated as well, and showed that fabricated composites exhibit enhanced thermal stability. Because of its dynamic mechanical properties, the composites can still be utilized as flexible sensors. Finally, the vibration sensing capability was systematically investigated, and it was shown that the addition of ZnO star-like filler enhanced the value of the thickness mode d33 piezoelectric constant from 16.3 pC/N to 29.2 pC/N for neat PVDF and PVDF with 10 wt.% of ZnO star-like particles.

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Section: Introductionmentioning

confidence: 94%

Vibration Sensing Systems Based on Poly(Vinylidene Fluoride) and Microwave-Assisted Synthesized ZnO Star-Like Particles with Controllable Structural and Physical Properties

et al. 2020

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“…When fluorinated CNC (2-5 wt%) was used to fabricate composite films, it has enabled the energy harvesting capacity of a 4.7 µF capacitor by 3.8 times higher than neat PVDF films. [90,91] Reproduced with permission. [83] Copyright 2020, Wiley.…”

Section: Nanocellulose Incorporated Polymermentioning

confidence: 99%

An Overview of Cellulose‐Based Nanogenerators

Annamalai

Kumar

Dubal

et al. 2021

Adv Materials Technologies

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Developing nanogenerators (NGs) is achieved by exploiting the piezoelectric, triboelectric, and pyroelectric effects of both organic and inorganic materials. Many exhibit beneficial electrical properties (dielectric, conductive, or insulating) or have surfaces that are polarizable upon friction or physical contact. Recently, biomass‐derived materials and recycled materials, whose electrical activity can be induced, are explored for application in the design of more sustainable, cost‐effective, biodegradable, disposable NGs, and have demonstrated a wide range of output (microenergy) power densities. Among them, cellulose, the most abundant biopolymer, is found to offer excellent opportunities for designing and manufacturing NGs with multifunctional capacities. Cellulose can be derived into varied forms with multifunctionalities and physical morphologies. This account provides an overview of how cellulose is utilized in creating NGs based on piezoelectric, triboelectric, and pyroelectric effects. Because the mechanical properties of cellulose are tunable, current research trends on NGs originate with the triboelectric effect. The discussion here focuses on design, fabrication methods, achievable electrical power output, and combinations with other materials and devices. Challenges in efficient fabrication and consistent power densities, and opportunities for integrating different technologies and developing more sustainable (in terms of economic, environmental, and ecological) nature–human–machine interfacial devices are also discussed.

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“…The first studies about piezoelectric effect in cellulose dates back to 50s [184] and several applications of cellulose in this field have been reported. [185][186][187][188][189] Piezoelectric effect refers to the development of a voltage drop across a material upon applying a pressure that produces a deformation of the material lattice and its consequent polarization. [190] Figure 12a displays a schematic view of a piezoelectric material that, upon compression, develops an electrical potential difference across its surfaces.…”

Section: Piezo and Triboelectric Effectsmentioning

confidence: 99%

Nanocellulose and Its Interface: On the Road to the Design of Emerging Materials

Bettotti

Scarpa

2021

Adv Materials Inter

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The interest in the hierarchical structure, the multi-scale organization, and the properties of cellulose has long been the prerogative of botanists and plant physiologists. The last decade has witnessed the potential of a top-down approach to take apart cellulose-based raw materials into their micro-and nano-sized building blocks and to use them to design and fabricate functional materials and devices with new and, in some cases, outstanding properties. At present, cellulose is not only one of the main constituents of the plant and bacterial kingdom, it is also an important component of materials and manufactured goods, such as paper, textiles, or food additives. Depending on the extent of the scale down process, the fragments have variable size and in this review are collectively indicated as nanocellulose (NC). Although the interfacial properties of NC are always mentioned and recognized to contribute significantly to NC behavior, there is still room for reviewing the several recent reports highlighting the role of the interaction at the interface. In this scenario, the interface driven performances of some advanced NC-based materials are gaining in importance. This review aims at providing an overview of the most advanced of them, such as the Pickering emulsions, the supercapacitors, the drug crystallizing capsules, the nanowood.In nature, cellulose is synthesized by plants and also by some bacterial strains which can polymerize the glucose residues into linear β − 1, 4 −glucan chains. Once extracellularly secreted, the chains assemble, crystallize (the degree of crystallinity is up to 90%), and form nanostructures called bacterial nanocellulose (BNC) which in turn assemble forming microfibrils. Different from plant tissues where cellulose is embedded in a heterogeneous macrostructure, bacterial secretions are made of pure cellulose and are considered an excellent source of NC. [2] However, due to the large availability of cellulose from wood or other lowcost vegetable sources such as agriculture wastes, plant cellulose is the most common material for NC production. Several strategies for the preparation of NC have been reported. [3] A popular production route uses a pretreatment to introduce negative charges by 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) mediated oxidation followed by a mechanical disintegration. [4] The behavior of NC has been largely studied, and it is well assessed that when NC colloidal suspensions are dried, they form flexible and transparent films with multifunctional properties. [5] These properties, first of all, depend on the degree of fibrillation of the colloidal NC. [6] Conversely, in aqueous solutions, NC Nanocellulose has several unique properties that render it a versatile mate rial with possible uses in a broad spectrum of applications. Nanocellulose is proved to form stable colloidal suspensions with interesting rheological properties, assemble in soft hydrogels of tunable porosity, compact dried films. Suggested or already current applications of these systems are in the f...

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Nanocellulose Reinforced Flexible Composite Nanogenerators with Enhanced Vibrational Energy Harvesting and Sensing Properties

Cited by 28 publications

References 64 publications

Vibration Sensing Systems Based on Poly(Vinylidene Fluoride) and Microwave-Assisted Synthesized ZnO Star-Like Particles with Controllable Structural and Physical Properties

Vibration Sensing Systems Based on Poly(Vinylidene Fluoride) and Microwave-Assisted Synthesized ZnO Star-Like Particles with Controllable Structural and Physical Properties

An Overview of Cellulose‐Based Nanogenerators

Nanocellulose and Its Interface: On the Road to the Design of Emerging Materials

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