Effects of Refining Parameters on the Properties of Oil Palm Frond (OPF) Fiber for Medium Density Fibreboard (MDF)

Studies on the manufacture of medium density fiberboard (MDF) from oil palm frond (OPF) fibre were conducted to provide a sustainable and feasible source of lignocellulosic materials. The quality and properties of the fibre are very important as it dictates the final MDF properties. The properties of fibre like fibre pH, buffering capacity, and morphology can influence most of the MDF performances. Refining condition is one of the most important factors which determine the properties of the refined fibre. In this study, the effects of different refining pressures and temperatures on OPF fibre were evaluated. The refining of OPF fibre was observed at four levels of refining parameters; which were categorized as low (2 bar at 130 °C), medium (4 bar at 150 °C), high (6 bar at 170 °C), and severe (8 bar at 190 °C). The refining heating time of 5 minutes was employed. The pH, buffering capacity, morphology, and the surface of the fibres were evaluated. The refined fibres were used to manufacture fibreboard panels at a target density of 720 kg/m3 and 12% urea formaldehyde (UF) resin. The panel's physical (thickness swelling) and mechanical properties (bending and internal bonding strength) were then evaluated according to European Standard (EN 622-5, 2006). The results indicated that refining conditions affected the properties of the fibres and final boards. High steam pressure and temperature-induced pH changes in OPF fibres, leading to more acidic fibres and greater acid buffering capacity. The fibre separation was more adequate at this level and produced fibre with a smooth surface. Based on the test results for fibreboard properties, high steam pressure and temperature produced better dimensional stability of panels and bending and bonding strength. However, at the highest refining condition (severe level), the board performances began to deteriorate. The best performances of the samples were found for the panels made under refining conditions of 6 bar at 170 °C.

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Mechanical and Acoustical Properties of Short Oil Palm Frond Fibre Reinforced Polyester Composites

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1082/1/012013 ◽

2021 ◽

Vol 1082 (1) ◽

pp. 012013

Author(s):

Sabri ◽

Zahrul Fuadi ◽

Rudi Kurniawan ◽

Samsul Rizal

Keyword(s):

Oil Palm ◽

Acoustical Properties ◽

Oil Palm Frond ◽

Polyester Composites ◽

Palm Frond

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Enzymatic Hydrolysis of Pretreated Fibre Pressed Oil Palm Frond by using Sacchariseb C6

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/206/1/012008 ◽

2017 ◽

Vol 206 ◽

pp. 012008

Author(s):

F S Hashim ◽

H W Yussof ◽

M A K M Zahari ◽

R A Rahman ◽

R M Illias

Keyword(s):

Enzymatic Hydrolysis ◽

Oil Palm ◽

Oil Palm Frond ◽

Hydrolysis Of ◽

Palm Frond

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Investigation on the Dielectric Properties of Pulverized Oil Palm Frond and Pineapple Leaf Fiber for X-Band Microwave Absorber Application

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.893.488 ◽

2014 ◽

Vol 893 ◽

pp. 488-491 ◽

Cited By ~ 1

Author(s):

Elfarizanis Baharudin ◽

Alyani Ismail ◽

Adam Reda Hasan Alhawari ◽

Edi Syams Zainudin ◽

Dayang L.A. Majid ◽

...

Keyword(s):

Dielectric Constant ◽

Dielectric Properties ◽

Oil Palm ◽

Microwave Absorber ◽

Band Frequency ◽

Pineapple Leaf Fiber ◽

X Band ◽

Oil Palm Frond ◽

Palm Frond ◽

Leaf Fiber

This paper presents the results on dielectric properties of pulverized material based on agricultural waste namely oil palm frond and pineapple leaf fiber for microwave absorber application in the X-band frequency range. The investigation is started by identifying the pulverized materials permittivities and loss tangents using coaxial probe technique, followed by density measurement comprising the determination of bulk and solid densities. Then, by using dielectric mixture model, the solid particle dielectric properties were determined. It is observed that the air properties give quite an effect on the permittivity and loss tangent of the pulverized materials. It is also found that the lower the material density the higher material dielectric constant will be. Furthermore, the results show that, both oil palm frond and pineapple leaf fiber are potential to be X-band absorber with average dielectric constant of 4.40 and 3.38 respectively. The loss tangents for both materials were observed to be more than 0.1 which mark them as lossy materials.

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