The Effect of Storage Time and Humidity on Mechanical and Physical Properties of Medium Density Fiberboard (MDF) from Oil Palm Empty Fruit Bunch and Rubberwood

Khalil, H. P. S. Abdul; Firdaus, Maulidan; Anis, M.; Ridzuan, R.

doi:10.1080/03602550802355644

Cited by 17 publications

(4 citation statements)

References 8 publications

(9 reference statements)

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“…These fibre lumps required more forces to deform during hot pressing as a result more stresses were built in the panels due to the poor distribution of resin and fibres. According to Abdul Khalil et al [14] and Gillah et al [15] these excessive stresses were released when exposed to moisture and caused pronounced reversed densification, lead to high TS value.…”

Section: Thickness Swellingmentioning

confidence: 99%

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Dimensional Stability Properties of Medium Density Fibreboard (MDF) from Treated Oil Palm (<i>Elaeis guineensis</i>) Empty Fruit Bunches (EFB) Fibres

Ibrahim¹,

Ahmad²,

Aziz³

et al. 2016

OJCM

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The aim of the study was to investigate the effect of pre-treatments by using sodium hydroxide (NaOH) and acetic acid on oil palm Empty Fruit Bunch (EFB) fibres for the production of Medium Density Fibreboard (MDF). The EFB fibres were treated with chemicals in the concentration range of 0.2%, 0.4%, 0.6% and 0.8% prior to refining. Single-homogenous layer MDF with 12 mm thickness and density of 720 kg/m 3 was produced. Urea-Formaldehyde (UF) was applied at 10% loading (based on dry weight of dry fibres) as a binder. The physical properties (Water Absorption (WA) and Thickness Swelling (TS)) of the produced panels were tested according to European Standard, EN 622-5:2006. The results show that types of chemical used had greater effects than concentration on the dimensional stability of the MDF. EFB fibres treated with acetic acid produced MDF with better dimensional stability compared to the MDF NaOH treated fibres. High concentration of NaOH produced poor dimensional stability in the panels.

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Section: Thickness Swellingmentioning

confidence: 99%

“…The WA of panels depends on the ability of the fibres to absorb water due to the presence of hydroxyl groups [14]. WA depends on the affinity of the fibres to attract water and hence does not rely much on the bonding strength.…”

Section: Water Absorptionmentioning

confidence: 99%

Dimensional Stability Properties of Medium Density Fibreboard (MDF) from Treated Oil Palm (<i>Elaeis guineensis</i>) Empty Fruit Bunches (EFB) Fibres

Ibrahim¹,

Ahmad²,

Aziz³

et al. 2016

OJCM

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“…The reduction in the mechanical strength of wood-based panels under humid conditions is an expected result [ 2 , 41 , 42 ], which can be attributed to the relative brittleness and inability of cured resin to be plasticized through the induced stress by water molecules at a high relative humidity [ 43 , 44 ]. This may lead to failure in interfiber connection, and thus reduce the mechanical strength of the HDF panels.…”

Section: Resultsmentioning

confidence: 99%

Hydrophobic Formulations Based on Tall Oil Distillation Products for High-Density Fiberboards

Hosseinpourpia

Αδαμόπουλος

Walther³

et al. 2020

Materials

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This study investigates the effect of renewable formulations based on tall oil bio-refinery products on the water vapor sorption and interfiber strength of cellulosic fibers as well as on the properties of high-density fiberboard (HDF) panels. The results obtained for HDF prepared using renewable formulations were compared to the results for HDF obtained using conventional synthetic paraffin wax (hydrowax), which is the hydrophobic agent currently utilized by the industry. Four tall oil distillation products (TODPs) with different levels of fatty and rosin acids were used for preparing the hydrophobic formulations with furfuryl alcohol as an organic solvent. According to determinations with an automated vapor sorption apparatus, the formulations had a similar effect with hydrowax on the sorption behavior of natural fibers. Unlike to hydrowax treatment, the ultimate tensile strength of cellulosic paper-sheets treated with the formulations remained unchanged or significantly increased. At the standard addition load of 1% (wt/wt dry fibers) of the formulations, HDF panels showed comparable and only in one case, e.g., TODP3-based formulation, slightly higher thickness swelling (24 h) than those with hydrowax. The best performing formulation (TODP2-based) in terms of tensile strength of paper sheets did not significantly change the mechanical properties of HDF panels in both standard climate and high humid conditions. Promising results at the standard and humid climate conditions were obtained for HDF panels manufactured with higher TODP2-based formulation amounts (3–5%) and reduced melamine-urea-formaldehyde resin content (10–12% instead of 14%, wt dry resin/wt dry fibers).

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“…Palm (Elaeis guineensis) is grown on over 11 million hectares worldwide [1], and its oil is one of the most important branches of agribusiness in many countries. In 2017 alone, worldwide palm oil production reached around 70 million tons [2].…”

Section: Introductionmentioning

confidence: 99%

Study of the Antioxidant Power of the Waste Oil from Palm Oil Bleaching Clay

et al. 2020

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Palm oil is one of the most consumed oils, one of whose refining steps is the removal of pigments and other substances using bleaching clay as adsorbent. Worldwide production of this oil was 70 million tons in 2017, requiring 1 t of clay to produce 1000 t of refined oil. The residual bleaching clay, having an oil fraction (12.70%) rich in phenolics, carotenoids and tocopherols, was extracted in this study with ethanol to obtain an antioxidant-rich palm oil bleaching extract (POBE), with the aim of using it as a natural antioxidant source. The POBE antioxidant capacity determined by the DPPH method corresponded to a 20.29% inhibition of radical formation. The POBE was also tested for its potential to enhance oxidative stability of passion fruit, pracaxi and Brazil nut oils used as reference oils, and compared to common synthetic antioxidants (tert-butylhydroquinone and propyl gallate), either separately as controls or in mixtures with them. Besides the increased oxidative stability of these oils induced by the POBE, a positive synergistic effect between it and the synthetic antioxidants was observed. These results taken together suggest that the exploitation of the waste oil from bleaching clay as an additive to improve the oxidative stability of biofuels or lubricating oils is feasible.

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The Effect of Storage Time and Humidity on Mechanical and Physical Properties of Medium Density Fiberboard (MDF) from Oil Palm Empty Fruit Bunch and Rubberwood

Cited by 17 publications

References 8 publications

Dimensional Stability Properties of Medium Density Fibreboard (MDF) from Treated Oil Palm (<i>Elaeis guineensis</i>) Empty Fruit Bunches (EFB) Fibres

Dimensional Stability Properties of Medium Density Fibreboard (MDF) from Treated Oil Palm (<i>Elaeis guineensis</i>) Empty Fruit Bunches (EFB) Fibres

Hydrophobic Formulations Based on Tall Oil Distillation Products for High-Density Fiberboards

Study of the Antioxidant Power of the Waste Oil from Palm Oil Bleaching Clay

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The Effect of Storage Time and Humidity on Mechanical and Physical Properties of Medium Density Fiberboard (MDF) from Oil Palm Empty Fruit Bunch and Rubberwood

Cited by 17 publications

References 8 publications

Dimensional Stability Properties of Medium Density Fibreboard (MDF) from Treated Oil Palm (&lt;i&gt;Elaeis guineensis&lt;/i&gt;) Empty Fruit Bunches (EFB) Fibres

Dimensional Stability Properties of Medium Density Fibreboard (MDF) from Treated Oil Palm (&lt;i&gt;Elaeis guineensis&lt;/i&gt;) Empty Fruit Bunches (EFB) Fibres

Hydrophobic Formulations Based on Tall Oil Distillation Products for High-Density Fiberboards

Study of the Antioxidant Power of the Waste Oil from Palm Oil Bleaching Clay

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Product

Resources

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Dimensional Stability Properties of Medium Density Fibreboard (MDF) from Treated Oil Palm (<i>Elaeis guineensis</i>) Empty Fruit Bunches (EFB) Fibres

Dimensional Stability Properties of Medium Density Fibreboard (MDF) from Treated Oil Palm (<i>Elaeis guineensis</i>) Empty Fruit Bunches (EFB) Fibres