Nanocellulose for Sensing Applications

Nguyen, Long H.; Naficy, Sina; Chandrawati, Rona; Dehghani, Fariba

doi:10.1002/admi.201900424

Cited by 70 publications

(43 citation statements)

References 152 publications

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“…Cellulose nanofibril (CNF) has become an ideal starch film enhancer due to its low cost, low density, renewability, recyclability, high surface area, chemical reactivity, strength, modulus, elasticity, transparency, tensile rigidity, light weight, low thermal expansion, and biodegradability (due to its nano-size characteristics) [15][16][17].Cellulose nanofibril comes from various sources of natural fibers, such as cotton, wood, corn cobs, sisal, wheat straw, flax, bamboo, rice husks, pea husks, coconut shells, bagasse, and cassava residues. However, CNF is hydrophilic and absorbs moisture when exposed [18]. Therefore, the surface hydrophobicity of CNF can be changed using various chemical modification techniques, thereby improving the compatibility and dispersibility of CNF in specific solvents [19].…”

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confidence: 99%

“…Cellulose nanofibril comes from various sources of natural fibers, such as cotton, wood, corn cobs, sisal, wheat straw, flax, bamboo, rice husks, pea husks, coconut shells, bagasse, and cassava residues. However, CNF is hydrophilic and absorbs moisture when exposed [18]. Therefore, the surface hydrophobicity of CNF can be changed using various chemical modification techniques, thereby improving the compatibility and dispersibility of CNF in specific solvents [19].…”

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confidence: 99%

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Preparation and Properties of Cassava Residue Cellulose Nanofibril/Cassava Starch Composite Films

Huang

Zhao

et al. 2020

Nanomaterials

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Because of its non-toxic, pollution-free, and low-cost advantages, environmentally-friendly packaging is receiving widespread attention. However, using simple technology to prepare environmentally-friendly packaging with excellent comprehensive performance is a difficult problem faced by the world. This paper reports a very simple and environmentally-friendly method. The hydroxyl groups of cellulose nanofibrils (CNFs) were modified by introducing malic acid and the silane coupling agent KH-550, and the modified CNF were added to cassava starch as a reinforcing agent to prepare film with excellent mechanical, hydrophobic, and barrier properties. In addition, due to the addition of malic acid and a silane coupling agent, the dispersibility and thermal stability of the modified CNFs became significantly better. By adjusting the order of adding the modifiers, the hydrophobicity of the CNFs and thermal stability were increased by 53.5% and 36.9% ± 2.7%, respectively. At the same time, the addition of modified CNFs increased the tensile strength, hydrophobicity, and water vapor transmission coefficient of the starch-based composite films by 1034%, 129.4%, and 35.95%, respectively. This material can be widely used in the packaging of food, cosmetics, pharmaceuticals, and medical consumables.Nanomaterials 2020, 10, 755 2 of 19 starch films, researchers have often added different types of enhancers to starch film to improve its strength [11][12][13][14]. Cellulose nanofibril (CNF) has become an ideal starch film enhancer due to its low cost, low density, renewability, recyclability, high surface area, chemical reactivity, strength, modulus, elasticity, transparency, tensile rigidity, light weight, low thermal expansion, and biodegradability (due to its nano-size characteristics) [15][16][17].Cellulose nanofibril comes from various sources of natural fibers, such as cotton, wood, corn cobs, sisal, wheat straw, flax, bamboo, rice husks, pea husks, coconut shells, bagasse, and cassava residues. However, CNF is hydrophilic and absorbs moisture when exposed [18]. Therefore, the surface hydrophobicity of CNF can be changed using various chemical modification techniques, thereby improving the compatibility and dispersibility of CNF in specific solvents [19]. Through phosphorylation, carboxymethylation, oxidation and sulfonation reactions, ionic charge can be introduced to the surface of cellulose [20-23]; esterification, silylation, amidation, urethanation, and etherification can make the cellulose surface hydrophobic [24][25][26]. In summary, no matter what surface chemistry is ultimately required, the modification technology depends almost entirely on the reaction of the hydroxyl groups on the surface of the CNF. The challenge for these chemical modification technologies is to change only the surface of the CNF, maintaining its original morphology and the complex structure of its internal hydroxyl groups.Wei et al. extracted CNF from oil palm waste by acid hydrolysis using natural lime juice as a cross-linking agent. The struc...

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confidence: 99%

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confidence: 99%

Preparation and Properties of Cassava Residue Cellulose Nanofibril/Cassava Starch Composite Films

Huang

Zhao

et al. 2020

Nanomaterials

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“…Very recently, Ogundare and van Zyl23 reviewed research in using nanocellulose‐based substrates for surface enhanced Raman spectroscopy (SERS) since SERS offers a useful platform for sensing applications. Nguyen et al24 also reported the utilization of nanocellulose for different sensors.…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, materials of different dimensions possess different features/performances. For example, the large surface area brought by nanocellulose can be enhanced when it is in the form of a highly porous structure 24. In this context, 1‐, 2‐, or 3D nanocellulose‐based products may endow sensors with substrate or sensing elements of tunable strength, flexibility, porosity, compressibility, hydrophilicity, and transparency.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the large surface area brought by nanocellulose can be enhanced when it is in the form of a highly porous structure. [24] In this context, 1-, 2-, or 3D nanocellulose-based products may endow sensors with substrate or sensing elements of tunable strength, flexibility, porosity, compressibility, hydrophilicity, and transparency. So far, there are no review articles summarizing work on the application of nanocellulose to sensor products focusing on structure.…”

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confidence: 99%

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Ultrasensitive Physical, Bio, and Chemical Sensors Derived from 1‐, 2‐, and 3‐D Nanocellulosic Materials

Dai

Wang

Zou

et al. 2020

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Sensors are of increasing interest since they can be applied to daily life in different areas from various industrial sectors. As a natural nanomaterial, nanocellulose plays a vital role in the development of novel sensors, particularly in the context of constructing multidimensional architectures. This review summarizes the utilization of nanocellulose including cellulose nanofibers, cellulose nanocrystals, and bacterial cellulose for sensor design, mainly focusing on the influence of nanocellulose on the sensing performance of these sensors. Special attention is paid to nanocellulose in different forms (1D, 2D, and 3D) to highlight the impact of nanocellulose constructed structures. The aim is to provide a critical review on the most recent progress (especially after 2017) related to nanocellulose‐containing sensors, since there are significantly increasing research activities in this area. Moreover, the outlook for the development of nanocellulose‐containing sensors is also provided at the end of this work.

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