Effect of nanoclay on some applied properties of oriented strand board (OSB) made from underutilized low quality paulownia (Paulownia fortunei) wood

Salari, Ayoub; Tabarsa, Taghi; Khazaeian, Abolghasem; Saraeian, A R

doi:10.1007/s10086-012-1278-2

Cited by 37 publications

(17 citation statements)

References 51 publications

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“…Apparently, regardless of resin concentration, wood treated using PF/nanoclay admixture had lower FE value compared to that of the wood treated using PF alone, suggesting that incorporation of nanoclay into PF resin had reduced the FE of the wood. As reported by Salari et al (2012Salari et al ( , 2013, a good degree of nanoclay dispersion could absorb and reduce the formaldehyde gas releases. Moreover, Zeng et al (2005) and Lin et al (2006) also suggested that the Fig.…”

Section: Formaldehyde Emissionmentioning

confidence: 78%

Characterisation of phenolic resin and nanoclay admixture and its effect on impreg wood

et al. 2015

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Bulking treatment with low molecular weight phenol formaldehyde (LmwPF) resin has been found to successfully enhance the properties of low-density wood but emit higher formaldehyde. Incorporation of nanoparticle to the phenolic matrix could possibly reduce the use of high concentration LmwPF and thus lower the formaldehyde emission (FE) without adversely affecting the other properties. The aim of the study was to examine the characteristics of LmwPF resin and nanoclay admixture and determine its effects on the performance of impreg wood. Montmorillonite nanoclay nanomer (0.5-1.5 % w/w based on solid PF) was dispersed in LmwPF resin (10-20 % w/v) using ultrasonication technique. The dispersion of nanoclay in LmwPF was examined using X-ray diffraction (XRD) analysis and transmission electron microscopy (TEM). XRD and TEM analyses confirmed that the nanoclay dispersion in the resin was in exfoliated form. Air-dried sesenduk (Endospermum diadenum) wood was impregnated with these admixtures using vacuum pressure process followed by curing at 150°C for 30 min. The FE, dimensional stability and strength properties were evaluated and compared with impreg wood treated solely with LmwPF. The results showed that the polymer retention and density of the LmwPF/nanoclay-impregnated samples were higher than the LmwPF-impregnated samples. This admixture had successfully bulked the cell wall of the wood and imparted higher dimensional stability to the treated wood. The modulus of rupture and modulus of elasticity, compressive stress and hardness & Zaidon Ashaari

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Section: Formaldehyde Emissionmentioning

confidence: 78%

Characterisation of phenolic resin and nanoclay admixture and its effect on impreg wood

et al. 2015

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“…The improvement was attributed to the strong adsorption of NW on cellulose surface. Salari et al (2012) also observed that that MOR significantly improved by incorporation of organo-modified montmorillonite (MMT) up to 5%. Hosseyni et al (2014) also reported 33% to 39% improvement in MOR of particle boards made with nanoclay mixed UF and MDI resins.…”

Section: Modulus Of Rupture (Mor)mentioning

confidence: 81%

“…Clays are classified according to their crystalline structures and also to the quantity and position of the ions within the elementary mesh (Marquis et al, 2011). The most important characteristics pertinent to application of clay minerals in polymer nanocomposites are the richest intercalation chemistry, high strength and stiffness and high aspect ratio of individual platelets, abundance in nature, low cost and high gas barrier quality (Salari et al, 2012). It is found that slight percentage of nanoclay could improve the curing performance of the UF resin and physical and mechanical properties of wood and bamboo-based composites (Lei et al, 2008;Andrabi and Ismita, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effects of different nanoclay loadings on the physical and mechanical properties of Melia composita particle board

Ismita¹,

Lokesh

2018

Bois for. trop.

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La présente étude a permis d’analyser les effets de l’ajout d’une charge de nanoparticules de Cloisite Na+ (nanoargile) dans une résine d’urée-formaldéhyde utilisée dans la fabrication de panneaux de particules. La Cloisite Na+ a été incorporée à 2 %, 4 % et 6 % de la masse sèche de résine. La densité, l’absorption d’eau (AE), le gonflement (G), les modules de rupture (MR) et d’élasticité (ME) et la résistance interne à l’arrachement (RI) ont été mesurés pour évaluer la performance des panneaux. Des améliorations significatives ont été constatées pour G, MR et ME avec de la Cloisite Na+ incor- porée dans la résine. Plus précisément, pour les échantillons au liant UF additionné de 6 % de nanoargile, les valeurs MR et ME augmentent respectivement de 34 % et de 65 % par rapport aux panneaux de référence.

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“…Particulate additives may also reduce emissions from UF. Nanoclay was added to UF with the help of a coupling agent substituting up to 6% resin without negatively affecting its properties [8] or even improving its properties [9]. All these findings have shown that a substitute of a few percent of UF resin is possible without diminishing its properties.…”

Section: Introductionmentioning

confidence: 99%

“…Besides formaldehyde emission, also the brittleness of cured UF resin presents a rewarding target for improvement [11]. Inorganic particles such as nanoclay [8,9,[12][13][14][15] and cellulose nanoparticles [16][17][18] were successfully used as modifiers improving adhesive toughness and bond strength.…”

Section: Introductionmentioning

confidence: 99%

Urea-formaldehyde microspheres as a potential additive to wood adhesive

et al. 2018

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Urea formaldehyde (UF) resins are important for wood industry due to their attractive properties at reasonable price. Particulate fillers added to UF are of interest with regard to improving the functionality of UF and also in terms of reduced UF consumption. To study their potential as filler, solid UF microspheres were synthesized and characterised respecting its morphology, chemical curing and thermal stability. Marigold flower structured spheres with diameters between 5 and 20 µm are presented and application trials demonstrated that high amounts of UF may be replaced by solid microspheres without impairing adhesive bond strength of solid wood bond lines. Fluorescence microscopy showed that microspheres greatly reduce adhesive penetration into the wood substrate, retaining the modified adhesive in the bondline. UF microspheres may thus be considered as viable filler for UF adhesives, particularly with regard to the possibility of endowing them with added functionality like self-healing properties.

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Effect of nanoclay on some applied properties of oriented strand board (OSB) made from underutilized low quality paulownia (Paulownia fortunei) wood

Cited by 37 publications

References 51 publications

Characterisation of phenolic resin and nanoclay admixture and its effect on impreg wood

Characterisation of phenolic resin and nanoclay admixture and its effect on impreg wood

Effects of different nanoclay loadings on the physical and mechanical properties of Melia composita particle board

Urea-formaldehyde microspheres as a potential additive to wood adhesive

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