Comparison of fracture properties of cellulose nanopaper, printing paper and buckypaper

Mao, Rui; Goutianos, Stergios; Tu, Wei‐Chen; Meng, Nan; Yang, Guang; Berglund, Lars A.; Peijs, Ton

doi:10.1007/s10853-017-1108-4

Cited by 45 publications

(23 citation statements)

References 35 publications

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“…In analogy with classic paper sheets, also CNF allows preparation of sheets or films, often termed “nanopapers.” Such nanopapers have much better mechanical properties in comparison to classic paper sheets, for example, the tensile strength in nanopapers is ≈200–300 MPa compared to 30–40 MPa in classical papers . Due to their smaller fibrils, the nanopapers have fundamentally different properties.…”

Section: Functional Materials Based On Nanocellulosesmentioning

confidence: 99%

Advanced Materials through Assembly of Nanocelluloses

et al. 2018

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There is an emerging quest for lightweight materials with excellent mechanical properties and economic production, while still being sustainable and functionalizable. They could form the basis of the future bioeconomy for energy and material efficiency. Cellulose has long been recognized as an abundant polymer. Modified celluloses were, in fact, among the first polymers used in technical applications; however, they were later replaced by petroleum-based synthetic polymers. Currently, there is a resurgence of interest to utilize renewable resources, where cellulose is foreseen to make again a major impact, this time in the development of advanced materials. This is because of its availability and properties, as well as economic and sustainable production. Among cellulose-based structures, cellulose nanofibrils and nanocrystals display nanoscale lateral dimensions and lengths ranging from nanometers to micrometers. Their excellent mechanical properties are, in part, due to their crystalline assembly via hydrogen bonds. Owing to their abundant surface hydroxyl groups, they can be easily modified with nanoparticles, (bio)polymers, inorganics, or nanocarbons to form functional fibers, films, bulk matter, and porous aerogels and foams. Here, some of the recent progress in the development of advanced materials within this rapidly growing field is reviewed.

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Section: Functional Materials Based On Nanocellulosesmentioning

confidence: 99%

Advanced Materials through Assembly of Nanocelluloses

et al. 2018

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“…At the same content of mNFC, the grammage and density slightly increased with higher amplitude of sonication process, further indicating an increase in the final solid content and confirming the retention of added nanofibers in these sheets [48]. With these increased sheet densities, an expected improvement in tensile strength (UTS) of around 10 MPa based on a typical strength of cellulose nanopaper ($200 MPa) and composite rule of mixture (ROM) was obtained only in BG/ mNFC sheets [49,50]. This is attributed to the retained nanofibers which can promote the contact areas between BG microfibers and increase the number of hydrogen bonding (inter-fiber bond density) and inter-fiber bond strength within the structures, facilitating stress transfer in cellulose networks and providing reinforcement to the sheet properties [51][52][53].…”

Section: Integration Of Nfc Mnfcs and Cpam þ Nfc In Molded Pulp Sheets: Draining Time Morphology Physical Mechanical And Water Resistancementioning

confidence: 66%

Tailoring nanofibrillated cellulose through sonication and its potential use in molded pulp packaging

et al. 2021

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Nanofibrillated cellulose (NFC) was systematically tailored by ultrasonic-assisted esterification with lactic acid at different amplitudes and times, which led to modified NFC (mNFC) with different degrees of substitution (DS), between 0.21 and 0.55, as confirmed by titration, FTIR, and C 13 NMR. A partial fragmentation and decrease in crystallinity of mNFC were revealed by TEM and XRD. To form molded pulp sheets, 5 wt% mNFC was added into a bagasse (BG) pulp slurry, then partially dewatered before hot-pressed. mNFC worked effectively as selfretention aid, partly solving the issue of drainage during sheet forming as commonly observed from unmodified NFC. The BG/mNFC (DS 0.55) sheet exhibited an enhancement in tensile properties. Water resistance and barrier performance of the current sheets were also evidently increased. The results suggested that the higher DS on mNFC can improve water resistance and mechanical properties, simultaneously overcoming drainage challenges in processing of molded pulp products.

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“…It is observed that with increase in ligament length samples take more load but the strength (force/area) is insensitive to the ligament length. This insensitivity is due to stress delocalization at the ends of the ligament (Supporting Information Movies S3 , S4 , and Figure S9 ) which has been observed in BP and other fibrous network materials 62 , 63 . The fracture toughness, and the critical strain energy release rate, , of BP and HBP as a function of ligament length are compared in Fig.…”

Section: Resultsmentioning

confidence: 84%

A wet-filtration-zipping approach for fabricating highly electroconductive and auxetic graphene/carbon nanotube hybrid buckypaper

Patole

Arif

Susantyoko

et al. 2018

Sci Rep

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A combination of carbon nanotubes (CNT) and graphene in the form of macroscopic hybrid buckypaper (HBP), exhibits a unique set of properties that can be exploited for many emerging applications. Here, we present a simple, inexpensive and scalable approach for the synthesis of highly conductive auxetic graphene/CNT HBP via wet-filtration-zipping and demonstrate the electrical, electrochemical and mechanical performance (tensile, mode I and mode III fracture) of synthesized HBP. An overall increase in electrical conductivity of 247% is observed for HBP (50 wt.% graphene and 50 wt.% CNT) as compared to BP (100 wt.% CNT) due to effective electronic percolation through the graphene and CNT. As a negative electrode for lithium-ion batteries, HBP shows 50% higher gravimetric specific capacity and 89% lower charge transfer resistance relative to BP. The graphene content in the HBP influences the mechanical performance providing an auxetic structure to HBP with large negative Poisson’s ratio. The facile green-chemistry approach reported here can be readily applied to any other 1D and 2D materials and solves key challenges associated with existing buckypaper manufacturing methods. The potential of the synthesis method to integrate with current cellulose paper manufacturing technology and its scalability demonstrate the novelty of the work for industrial scale production.

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Comparison of fracture properties of cellulose nanopaper, printing paper and buckypaper

Cited by 45 publications

References 35 publications

Advanced Materials through Assembly of Nanocelluloses

Advanced Materials through Assembly of Nanocelluloses

Tailoring nanofibrillated cellulose through sonication and its potential use in molded pulp packaging

A wet-filtration-zipping approach for fabricating highly electroconductive and auxetic graphene/carbon nanotube hybrid buckypaper

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