The Effect of Zephyr Layer Orientation on Zephyrboard Made from Oil Palm Petiole

Abstract

It is very important to utilize oil palm petiole for the production of zephyr boards. This study aimed to analyze the effect of layer orientation on zephyr board quality. Zephyr boards were made with three coating patterns (A = cross perpendicular, B= combine A and C, and C= paralell) and five zephyr layers using urea formaldehyde adhesive. They were pressed for 20 min at a pressure of 25 kgf/cm² and a temperature 120 ºC, to a target density of 0.80 g/cm³ and a size of 300 mm X 300 mm X 12 mm. Our results showed that the physical and mechanical properties fulfilled the standards of JIS A 5908-2003. The best physical properties were found in the type C layer pattern, which had a density of 0.82 g/cm³, Mouisture Content of 9.46%, Water Absorpsion of 16.49%, and Thickness Swelling of 16.49%. The best mechanical properties-Modulus Of Elasticity and Modulus Of Repture-were also found in the type C layer pattern, with values of 35.2 x 10-3 kgf/cm² and 603.9 kgf/cm², respectively. However, the best IB and screw holding strength (SW) results were found with the type B layer pattern (Internal bonding B of 38.65 kgf/cm², Screw Withdrawl of 145.11 kgf). Abstrak Pengaruh Pola Pelapisan Zephyr terhadap Sifat Papan Zephyr dari Pelepah Sawit. Pelepah sawit sangat menarik untuk dibuat menjadi papan zephyr. Penelitian ini bertujuan untuk menganalisa pengaruh pola/arah pelapisan lembaran zephyr terhadap kualitas papan zephyr. Papan zephyr dibuat dengan 3 model pola pelapisan (A= tegaklurus serat , B= kombinasi A dan C, C = sejajar serat) dari 5 lembaran lapisan zephyr dengan menggunakan perekat urea formaldehida. Papan dibuat berukuran 300 mm x 300 mm x 12 mm, pada suhu kempa 120 o C tekanan kempa 25 kgf/cm 2 selama 20 menit, dengan target kerapatan 0,8 g/cm³. Hasil penelitian menunjukan bahwa sifat fisik dan mekanik papan zephyr dapat memenuhi standard JIS A 5908-2003. Sifat fisik terbaik adalah papan zephyr type C, dengan kerapatan 0,82 g/cm³, kadar air 9,46%, penyerapan air 16,49% dengan kembangsusut 16,49 %. Sifat mekanik (MOE dan MOR) menunjukan bahwa papan zephyr type C adalah yang terbaik dengan nilai rata-rata 35,2 x10³ kgf/cm² dan 603,9 kgf/cm². Pada sifat kekuatan rekat (IB) dan kuat pegang sekrup pola lapisan type B adalah yang terbaik (IB= 38,65 kgf/cm² dan SW= 145,11 kgf).

Effect of Ammonium Persulfate Concentration on Characteristics of Cellulose Nanocrystals from Oil Palm Frond

“…Thus, many researchers have developed the utilization of oil palm such as for biopellets (Wistara et al, 2017), densified wood (Hartono et al, 2016a;Hartono et al, 2016b), meanwhile OPF was developed for many applications, i.e. for animal feeds (Ghani et al, 2017;Chanjula et al, 2017), corrosion inhibitors (Shah et al, 2017), succinic acid (Luthfi et al 2016), biofuel production and biorefineries (Sukiran et al, 2017;Tan et al, 2016), metal ions removal (Zainol et al, 2017), composite board (Khalid et al, 2015;Wardani et al, 2014).…”