Urea Formaldehyde and Cellulose Nanocrystals Adhesive: Studies Applied to Sugarcane Bagasse Particleboards

Mesquita, Ricardo Gabriel de Almeida; Mendes, Lourival Marin; Sanadi, Anand R.; Neto, Alfredo Rodrigues de Sena; Claro, Pedro Ivo Cunha; Corrêa, Ana Carolina; Marconcini, J. M.

doi:10.1007/s10924-018-1189-4

Cited by 30 publications

(14 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The TS and weight change (WC) with WA for fiberboards containing LCNF were lower than those for control fiberboards. Increase in viscosity was shown as the concentration of cellulose nanocrystals (NCC) to urea-formaldehyde (UF) adhesive increased for sugarcane bagasse particle boards [64]. The adhesive dispersion in the particleboard was prevented as NCC loading reached 5% due to the increase in viscosity.…”

Section: Modification Of Wood Adhesives With Nanocellulosementioning

confidence: 99%

Chemical Modification of Nanocellulose in Wood Adhesive: Review

Vineeth¹,

Gadhave²,

Gadekar³

2019

OJPChem

View full text Add to dashboard Cite

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.

show abstract

Section: Modification Of Wood Adhesives With Nanocellulosementioning

confidence: 99%

Chemical Modification of Nanocellulose in Wood Adhesive: Review

Vineeth¹,

Gadhave²,

Gadekar³

2019

OJPChem

View full text Add to dashboard Cite

show abstract

“…Natural fibers, such as palm kernel meal, sago fibers, and lignocellulosic waste fibers, have been investigated as fillers to prepare UF resin composite with improved performance [19][20][21]. However, their addition percentage is relatively low and high loading would prevent the effective dispersion in the particleboard [22]. Fiber dispersion has been identified as a major factor influencing the properties of fiber composite, and high addition increases their tendency to agglomerate.…”

Section: Introductionmentioning

confidence: 99%

Structures, Properties and Potential Applications of Corncob Residue Modified by Carboxymethylation

et al. 2020

View full text Add to dashboard Cite

In this study, corncob residue (CR) valorization was simply and efficiently realized via carboxymethylation, and its enhanced performance as fillers in urea-formaldehyde (UF) resin was investigated. The structures of corncob residue and carboxymethylated derivative were analyzed by nuclear magnetic resonance (NMR), Fourier-transform infrared spectroscopy (FTIR), and Raman techniques, respectively. The thermal stability, morphology, viscosity control, and adhesive strength were then investigated to evaluate its performance as fillers in UF resin composite. Similar to commercial flour, carboxymethylated CR could effectively disperse in UF resin. It also exhibited a better initial viscosity control between 30 and 50 °C. The adhesive test analysis showed that the shear strength of resin with carboxymethylated CR addition could reach 1.04 MPa, which was comparable to flour (0.99 MPa) and significantly higher than raw CR (0.45 MPa). Moreover, a low formaldehyde emission was observed.

show abstract

“…Researchers have been studying new applications for SCB, and trying to bring about changes in a residue by product to create new products with more added value, such as composites (Loh et al, 2013;Mesquita et al, 2018;Oliveira et al, 2016b), and one example of these composites is the particleboard (Lee et al, 2006;Widyorini et al, 2005). Particleboards are normally produced with elements of the breakdown of wood (particles/chips), which are later combined with adhesive bonding under pressure and high temperature (Iwakiri, 2005;Kelly, 1977;Maloney, 1996).…”

Section: Introductionmentioning

confidence: 99%

“…They can be produced in single layers (chipboards) or in three layers (medium density particleboards -MDP). Regarding the raw material wood is the most used, although, any lignocellulosic material can be used for the particleboard production, such as SCB (Carvajal et al, 1996;Guler et al, 2016;Han et al, 2005;Hazrati-Behnagh et al, 2016;Jonoobi et al, 2016;Khazaeian et al, 2015;Lee et al, 2006;Mesquita et al, 2018;Oliveira et al, 2016a;Rangavar et al, 2016). One advantage of SCB is that, it can be easily converted into sliver particles, similarly as with wood (Driemeier et al, 2011;Garzón-Barrero et al, 2016;Hemmasi et al, 2011;Lee et al, 2006;Wu, 2001).…”

Section: Introductionmentioning

confidence: 99%