Cellulose nanocrystal/graphene oxide composite film as humidity sensor

Kafy, Abdullahil; Akther, Asma; Shishir, Md. Imrul Reza; Kim, Jaehwan; Yun, Youngmin

doi:10.1016/j.sna.2016.05.045

Cited by 117 publications

(79 citation statements)

References 43 publications

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“…CNC and graphene both are hydrophilic with higher water uptake capacity. CNC-GO film displayed even increased water uptake capacity which is desirable for moisture sensitivity [114]. The sensing film did not compromise its performance with temperature change, demonstrating practical use of humidity sensor [114].…”

Section: Smart and Responsive Materialsmentioning

confidence: 93%

“…CNC-GO film displayed even increased water uptake capacity which is desirable for moisture sensitivity [114]. The sensing film did not compromise its performance with temperature change, demonstrating practical use of humidity sensor [114]. Similarly, CNC can be functionalized to make gas sensing material which can detect other organic and toxic vapors.…”

Section: Smart and Responsive Materialsmentioning

confidence: 99%

“…Smart CNC-based sensors can be designed for moisture, ions, organic vapors, and biological species sensing applications. Humidity sensor designed by Kafy et al [114] is made from CNC-graphene oxide (GO) composite. CNC and graphene both are hydrophilic with higher water uptake capacity.…”

Section: Smart and Responsive Materialsmentioning

confidence: 99%

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Trends in Advanced Functional Material Applications of Nanocellulose

2018

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The need to transition to more sustainable and renewable technology has resulted in a focus on cellulose nanofibrils (CNFs) and nanocrystals (CNCs) as one of the materials of the future with potential for replacing currently used synthetic materials. Its abundance and bio-derived source make it attractive and sought after as well. CNFs and CNCs are naturally hydrophilic due to the abundance of -OH group on their surface which makes them an excellent recipient for applications in the medical industry. However, the hydrophilicity is a deterrent to many other industries, subsequently limiting their application scope. In either light, the increased rate of progress using CNCs in advanced materials applications are well underway and is becoming applicable on an industrial scale. Therefore, this review explores the current modification platforms and processes of nanocellulose directly as functional materials and as carriers/substrates of other functional materials for advanced materials applications. Niche functional attributes such as superhydrophobicity, barrier, electrical, and antimicrobial properties are reviewed due to the focus and significance of such attributes in industrial applications.

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Section: Smart and Responsive Materialsmentioning

confidence: 93%

Section: Smart and Responsive Materialsmentioning

confidence: 99%

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Trends in Advanced Functional Material Applications of Nanocellulose

2018

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“…CNF was also used by Xu et al 46 to stabilize the dispersion of chemical reduced graphene oxide (rGO) merged in aqueous system with poly(vinyl alcohol) (PVA). Another variant of CNC utilization for humidity sensing was presented in a paper by Kafy et al, 50 where a composite film with GO was prepared by a simple blending process. Hu et al 47 developed a humidity sensor based on QCM with bacterial cellulose (BC) nanofibrous membranes as sensitive coatings.…”

Section: Introductionmentioning

confidence: 99%

Wide range humidity sensors printed on biocomposite films of cellulose nanofibril and poly(ethylene glycol)

Syrový

Maronová

Kuberský

et al. 2019

J of Applied Polymer Sci

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Cellulose nanofibril (CNF) films were prepared from side streams generated by the sugarcane industry, that is, bagasse. Two fractionation processes were utilized for comparison purposes: (1) soda and (2) hot water and soda pretreatments. 2,2,6,6-Tetramethylpiperidinyl-1-oxyl-mediated oxidation was applied to facilitate the nanofibrillation of the bagasse fibers. Poly(ethylene glycol) (PEG) was chosen as plasticizer to improve the ductility of CNF films. The neat CNF and biocomposite films (CNF and 40% PEG) were used for fabrication of self-standing humidity sensors. CNF-based humidity sensors exhibited high change of impedance, within four orders of magnitude, in response to relative humidity (RH) from 20 to 90%. The use of plasticizer had an impact on sensor kinetics. While the biocomposite film sensors showed slightly longer response time, the recovery time of these plasticized sensors was two times shorter in comparison to sensors without PEG. This study demonstrated that agroindustrial side streams can form the basis for high-end applications such as humidity sensors, with potential for, for example, packaging and wound dressing applications.

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“…Similar type of sensor which made up of a matrix of CNC isolated from cotton linter and graphene oxide composite was fabricated. At the highest filler loading of 10%, the cheaper and flexible composites were able to show admirable response time when tallied with commercial hygrometers …”

Section: Introductionmentioning

confidence: 99%

Surface functionalized nanocellulose as a veritable inclusionary material in contemporary bioinspired applications: A review

Chin

Ting

Ong

et al. 2017

J of Applied Polymer Sci

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The past few decades have seen extraordinary gain in interest for bio-based products, driven by the intensifying call of the society for petrochemical material replacement and developing materials with next-to-no environmental impact. Cellulose, which is an abundantly available "green" material, can be derived from plant fibers and tailored for a plethora of possible uses where it can be used as a substrate or as a filler material. However, emerging technologies and product advancements necessitate the search for materials that are small, biodegradable, lightweight, and strong. Nanocellulose, which can be obtained through as mechanical and chemical production methods with tensile strength and Young's modulus of up to 0.5 and 130 GPa, respectively, proves to be the answer that they were looking for. However, the inherent hydrophilic nature of nanocellulose limited its potential widespread application. Surface modifications of nanocellulose to alter and diminish its hydrophilicity were done to address the aforementioned issues. In this article, we had reviewed on different types of surface modifications and their resulting impact on the properties of nanocellulose and their effect on polymer composites. The importance of nanocellulose in emerging applications such as biosensor, nanoremediation, papermaking, and automotive as well as the current state of the industry and the commercialization progress of nanocellulose were also discussed.

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Cellulose nanocrystal/graphene oxide composite film as humidity sensor

Cited by 117 publications

References 43 publications

Trends in Advanced Functional Material Applications of Nanocellulose

Trends in Advanced Functional Material Applications of Nanocellulose

Wide range humidity sensors printed on biocomposite films of cellulose nanofibril and poly(ethylene glycol)

Surface functionalized nanocellulose as a veritable inclusionary material in contemporary bioinspired applications: A review

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