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All Journal Jurnal Penelitian Hasil Hutan Makara Journal of Technology
Surdiding RUHENDI
Department of Forest Products, Faculty of Forestry, Bogor Agricultural University, Dramaga, Bogor 16680, Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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PENGARUH KOMPOSISI ARAH LAPISAN TERHADAP SIFAT PAPAN BAMBU KOMPOSIT Sulastiningsih, I.M.; Ruhendi, Surdiding; Massijaya, Muh. Yusram; Darmawan, Wayan; Santoso, Adi
Jurnal Penelitian Hasil Hutan Vol 32, No 3 (2014): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Litbang Keteknikan Kehutanan dan Pengolahan Hasil Hutan

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Penelitian ini bertujuan untuk mengetahui pengaruh komposisi arah lapisan terhadap sifat papan bambu komposit (PBK). Jenis bambu yang digunakan adalah bambu andong (Gigantochloa pseudoarundinacea) berumur sekitar 4 tahun yang diperoleh dari tanaman rakyat di Jawa Barat. Bilah bambu andong yang digunakan untuk membuat PBK diberi perlakuan pendahuluan dengan jalan direndam dalam larutan boron 7% selama 2 jam. Produk PBK 5 lapis dibuat dengan 4 macam variasi komposisi arah lapisan. Bambu lamina dibuat dengan menggunakan perekat isosianat water based polymer-isocyanate (WBPI) dengan berat labur perekat 250 g/m2 permukaan, dikempa dingin dengan lama pengempaan 45 menit. Hasil penelitian menunjukkan bahwa rata-rata kerapatan, kadar air, pengembangan tebal, dan pengembangan lebar PBK berturut-turut adalah 0,79g/cm3, 12,60%, 2,38%, dan 1,13%. Kualitas perekatan PBK yang dibuat dengan perekat isosianat (WBPI) cukup baik yang ditunjukkan oleh tidak terjadinya delaminasi pada semua contoh uji untuk pengujian delaminasi. Keteguhan rekat rata-rata (uji kering) PBK yang dibuat dari bambu andong dengan perekat isosianat adalah 70,4 kg/cm2.  Sifat fisis dan mekanis PBK sangat dipengaruhi oleh komposisi arah lapisan penyusun PBK. Sifat mekanis PBK menurun dengan meningkatnya jumlah lapisan silang dalam komposisi lapisan penyusun PBK. Sebaliknya keberadaan lapisan silang dalam komposisi lapisan penyusun PBK meningkatkan kestabilan dimensi PBK yang dihasilkan.
The Effect of Pressing Temperature and Time on the Quality of Particle Board Made from Jatropha Fruit Hulls Treated in Acidic Condition Iswanto, Apri Heri; Febrianto, Fauzi; Hadi, Yusuf Sudo; Ruhendi, Surdiding; Hermawan, Dede
Makara Journal of Technology Vol. 17, No. 3
Publisher : UI Scholars Hub

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The high of pH of jatropha fruit hulls causes the negative properties of particleboard made from this material. Adjusting the particle acidity and pressing conditions (temperature and time) is among the technical modifications available to improve this particleboard’s properties. Particle acidity has been adjusted in a previous research project, and immersing the particles in acetic acid was found to be the best treatment in this preliminary research. In order to improve the particleboard’s properties, an experiment was conducted to determine the best pressing temperature and time. The objective of the research was to evaluate the influence of pressing temperature and time on the physical and mechanical properties of the board. Jatropha fruit hulls were immersed in 1% acetic acid solution for 24 hours. UF resin was used as the adhesive in the amount of 10%. The pressing temperatures and times used in this research were 110 °C, 120 °C, and 130 °C for 8 and 10 minutes, respectively. The particleboards were tested to determine their physical and mechanical properties according to JIS A 5908-2003. The result showed that pressing at 130 °C for 10 minutes resulted in the best physical and mechanical properties. Increasing the pressing temperature at a constant time or increasing the pressing time at a constant temperature caused the particleboard to exhibit decreased water absorption. The thickness swelling and modulus of elasticity (MOE) of the particleboard did not fulfil JIS A 5908-2003.
Co-Authors A.A. Ketut Agung Cahyawan W Apri Heri Iswanto Apri Iswanto, Apri Dede Hermawan Fauzi Febrianto I Wayan Darmawan Ignasia Maria Sulastiningsih Muh. Yusram Massijaya Yusuf Hadi, Yusuf Yusuf Sudo Hadi