Binding effect of cellulose nanofibers in wood flour board

Kojima, Yoshiyuki; Minamino, Jun; Isa, Akiko; Suzuki, Shuichi; Ito, Hirokazu; Makise, Rie; Okamoto, Masaki

doi:10.1007/s10086-013-1348-0

Cited by 38 publications

(33 citation statements)

References 6 publications

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“…Increase in the addition of nanocellulose causes an increase in viscosity and the solid content in the adhesive system. To replace Carcinogenic chemical adhesives, CNF as a reinforcement in wood flour (WF) board and binding effect of CNF in this system were investigated by Kojima et al [57]. For the improvement of the mechanical board properties by urea-formaldehyde (UF) and melamine-urea-formaldehyde (MUF), a study on the addition of cellulose nanofibers (CNFs) in various concentrations as reinforcement was investigated by Veigel et al [48].…”

Section: Modification Of Wood Adhesives With Nanocellulosementioning

confidence: 99%

Chemical Modification of Nanocellulose in Wood Adhesive: Review

Vineeth¹,

Gadhave²,

Gadekar³

2019

OJPChem

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Bio-based nanomaterial is more attractive, due to its abundance, eco-friendliness and sustainability, when compared to the non-renewable toxic petrochemicals used in the wood adhesive sector. Recent studies on the formaldehyde emission by petrochemical binders in wood adhesives have attracted scientists for the research in biomaterial-based binders. In this aspect nanocellulose (NC) is one such material which has reinforcing ability and has natural binding properties. Conventional wood adhesive uses petrochemical-based binders and additives. Inclusion of nanocellulose in wood adhesive could drastically reduce the dependency on non-renewable petroleum sources. Even though wood adhesive uses NC for improving mechanical properties of the adhesive, usage is restricted because of its inability to enhance tackiness and adhesion compared with petrochemicals. Availability of free hydroxyl groups and feasibility for modification can be a potential way for functionalization of this nanomaterial. To improve adhesion properties and to make nanocellulose act as a functional filler, the crosslinking approach can be a possible solution. Enhancement of thermal properties with improved thermal degradation, water barrier properties of crosslinked films and enhanced mechanical properties especially in crosslinked poly (vinyl alcohol) (PVA) matrix, which is one of the binders for wood adhesive discussed in this review paper proves the potential applicability of crosslinked NC. Hence by inclusion of NC in wood adhesive and crosslinking with the binder, both mechanical and performance properties are expected to enhance which will create a new world and possibilities for the bio-based eco-friendly wood adhesives. In this review paper, we have reviewed the crosslinking of nanocellulose to enhance the performance of wood adhesives.

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Section: Modification Of Wood Adhesives With Nanocellulosementioning

confidence: 99%

Chemical Modification of Nanocellulose in Wood Adhesive: Review

Vineeth¹,

Gadhave²,

Gadekar³

2019

OJPChem

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“…It is possible to preserve the nanoscale dimensions in the final product and take advantage of the high reinforcement capacity of such materials, and it provides the opportunity to use higher amounts of nanocellulose in the product being made. Efforts have been made recently to use CNF as a binder in the formulation of the wood flour boards (Kojima et al 2013(Kojima et al , 2015, but these studies have been limited in scope and do not provide information on the bonding mechanisms. Veigel et al (2012) utilized CNF as an additive in the formulation of formaldehyde-based adhesives of particleboards and oriented strand boards to improve their mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Cellulose Nanofibrils as a Binder for Particleboard Manufacture

et al. 2017

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Cellulose nanofibrils (CNF) were investigated as a binder in the formulation of particleboard (PB) panels. The panels were produced in four different groups of target densities with varying amounts of CNF binder.The produced panels were then tested to determine the modulus of rupture (MOR), modulus of elasticity (MOE), internal bond (IB), water absorption (WA), and thickness swelling (TS) properties. Density gradients through the thickness of the panels were evaluated using an Xray density profiler. The effect of drying on the strength development and adhesion between CNF and wood particles (WP) was investigated, and the effect of surface roughness on the wood-CNF bonding strength was evaluated through lap shear testing and scanning electron microscopy. It was found that at lower panel densities, the produced samples met the minimum standard values recommended for particleboard panels. Medium-density panels met the standard levels for IB, but they did not reach the recommended values for MOR and MOE. The possible bonding mechanism and panel formation process are discussed in light of microscopic observations and the results of lap shear tests were presented.

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“…As the most abundant natural biomass, wood based materials have some advantages, such as excellent mechanical strength, biodegradability and low cost [1e3]. However, wood based biomass materials are usually burnt to generate energy, which is not only a low-efficiency utilization, but also produces secondary haze pollution [4]. How to find an environment-friendly and high-value utilization of natural biomass materials has been a big and urgent challenge worldwide.…”

Section: Introductionmentioning

confidence: 99%