Preparation and property assessment of neat lignocellulose nanofibrils (LCNF) and their composite films

Horseman, Thomas; Tajvidi, Mehdi; Diop, Cherif Ibrahima Khalil; Gardner, Douglas J.

doi:10.1007/s10570-017-1266-1

Cited by 68 publications

(43 citation statements)

References 19 publications

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“…Table 3 shows that the thermal stability of CNF1 is better than CNF2 and CNF3. This aligns with the explanation of other previous results [36,[38][39][40][41]. The phenomenon that occurred on CNF1 is the impact of the oxidation reaction by TEMPO [25,[41][42][43], but the phenomenon of CNF2 and CNF3 is caused by the lignin contamination [44].…”

Section: Resultssupporting

confidence: 91%

Thermal and Morphology Properties of Cellulose Nanofiber from TEMPO-oxidized Lower part of Empty Fruit Bunches (LEFB)

et al. 2019

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Cellulose nanofiber (CNF) gel has been obtained from TEMPO-oxidized differently treated lower part of empty fruit bunches (LEFB) of oil palm. Three kinds of materials were initially used: (i) α-cellulose, (ii) raw LEFB fiber two-times bleaching, and (iii) raw LEFB three-times bleaching. The obtained nanofibers (CNF1, CNF2 and CNF3, respectively) were then characterized using several methods, e.g. FT-IR, SEM, UV-Visible, TEM, XRD and TGA. The LEFB at different levels of bleaching showed that the Kappa number decreased with the increase of the bleaching levels. The decrease of lignin and hemicellulose content affected the increase of the yield of fibrillation and optical transmittance of CNF2 and CNF3 gels. The FT-IR analysis confirmed the presence of lignin and hemicellulose in the CNF2 and CNF3 film. Based on TEM analysis, the lignin and hemicellulose content significantly affected the particle structure of CNFs, i.e. CNF1 was found as a bundle of fibril, while the CNF2 and CNF3 were visualized as individual fibers and interwoven nanofibril overlapping each other, respectively. The XRD data of the CNF’s film showed that CNF2 and CNF3 have a lower crystallinity index (CI) than CNF1. The presence of lignin and hemicellulose in the CNFs decreased its decomposition temperature.

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Section: Resultssupporting

confidence: 91%

Thermal and Morphology Properties of Cellulose Nanofiber from TEMPO-oxidized Lower part of Empty Fruit Bunches (LEFB)

et al. 2019

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“…In this respect a viable path seems to be the use of lignocellulose nanofibrils (LCNF) in place of CNF. It has been shown that LCNF films are slightly weaker than CNF but the properties can be considerably enhanced when they are hybridized with CNF [ 156 ].…”

Section: Cnf As Binder In Particleboard Fiberboard and Laminatesmentioning

confidence: 99%

Cellulose Nanomaterials—Binding Properties and Applications: A Review

et al. 2018

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Cellulose nanomaterials (CNs) are of increasing interest due to their appealing inherent properties such as bio-degradability, high surface area, light weight, chirality and the ability to form effective hydrogen bonds across the cellulose chains or within other polymeric matrices. Extending CN self-assembly into multiphase polymer structures has led to useful end-results in a wide spectrum of products and countless innovative applications, for example, as reinforcing agent, emulsion stabilizer, barrier membrane and binder. In the current contribution, after a brief description of salient nanocellulose chemical structure features, its types and production methods, we move to recent advances in CN utilization as an ecofriendly binder in several disparate areas, namely formaldehyde-free hybrid composites and wood-based panels, papermaking/coating processes, and energy storage devices, as well as their potential applications in biomedical fields as a cost-effective and tissue-friendly binder for cartilage regeneration, wound healing and dental repair. The prospects of a wide range of hybrid materials that may be produced via nanocellulose is introduced in light of the unique behavior of cellulose once in nano dimensions. Furthermore, we implement some principles of colloidal and interfacial science to discuss the critical role of cellulose binding in the aforesaid fields. Even though the CN facets covered in this study by no means encompass the great amount of literature available, they may be regarded as the basis for future developments in the binder applications of these highly desirable materials.

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“…It has been reported that lignin interferes with hydrogen bonding (Horseman, Tajvidi, Diop, & Gardner, 2017;Rojo et al, 2015). WNFs are covered with lignin ( Figure 2) (Figure 3b).…”

Section: Mechanical Properties Of Nanopapersmentioning

confidence: 94%

A fast method to prepare mechanically strong and water resistant lignocellulosic nanopapers

Sethi

Visanko

Österberg

et al. 2019

Carbohydrate Polymers

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This study covers a green method to prepare hybrid lignocellulosic nanopapers by combining wood nanofibres (WNFs) and cellulose nanofibres (CNFs). The WNFs and CNFs behave synergistically to compensate for the drawbacks of each other resulting in enhanced hybrid nanopapers. The draining time of hybrid nanopapers was improved by up to 75% over CNF nanopaper, and the mechanical properties (modulus, strength and elongation) were respectively improved up to 35%, 90% and 180% over WNF nanopaper. Additionally, the water resistance of hybrid nanopapers was considerably improved with a water contact angle of 95°; the neat CNF nanopaper had a contact angle of 52°. The morphology of nanopapers, studied by electron microscopy, indicated that lignin acts as a matrix, which binds the nanofibres together and makes them impervious to external environmental factors, such as high humidity. The reported hybrid nanopapers are 100% biobased, prepared by a simple and environmentally friendly processing route. Reported hybrid nanopapers can be used in novel applications such as gas barrier membranes and printable electronics.

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Preparation and property assessment of neat lignocellulose nanofibrils (LCNF) and their composite films

Cited by 68 publications

References 19 publications

Thermal and Morphology Properties of Cellulose Nanofiber from TEMPO-oxidized Lower part of Empty Fruit Bunches (LEFB)

Thermal and Morphology Properties of Cellulose Nanofiber from TEMPO-oxidized Lower part of Empty Fruit Bunches (LEFB)

Cellulose Nanomaterials—Binding Properties and Applications: A Review

A fast method to prepare mechanically strong and water resistant lignocellulosic nanopapers

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