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All Journal Indonesian Journal of Forestry Research Jurnal Penelitian Hasil Hutan
Jamal Balfas
Pusat Litbang Keteknikan Kehutanan dan Pengolahan Hasil Hutan Jl. Gunung Batu 5, Bogor. Telp. 0251-8633378
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management

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STABILISASI DIMENSI KAYU JATI CEPAT TUMBUH DAN JABON DENGAN PERLAKUAN PEMADATAN SECARA KIMIA Basri, Efrida; Balfas, Jamal
Jurnal Penelitian Hasil Hutan Vol 33, No 4 (2015): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2015.33.4.315-327

Abstract

Kayu yang berasal dari hutan tanaman umumnya memiliki dimensi yang tidak stabil, sehingga penggunaannya sangat terbatas. Tulisan ini mempelajari  stabilitas dimensi pada kayu jati cepat tumbuh (JCT) dan kayu jabon yang diberi  perlakuan densifikasi secara kimia.  Kayu JCT dan jabon diimpregnasi dengan  larutan campuran ekstrak serbuk kayu jati tua dan resin. Resin yang digunakan adalah vinil akrilat dan polivinil asetat, masing-masing dengan konsentrasi 8, 10, dan 12% (b/v),  serta 2 komposisi resin resorsinol. Hasil penelitian menunjukkan bahwa secara umum kayu yang diberi perlakuan impregnasi menjadi lebih stabil dari yang tidak diimpregnasi.  Kayu yang diimpregnasi dengan larutan campuran ekstrak jati dan resin resorsinol memberikan nilai stabilitas dimensi yang lebih baik dibandingkan dengan penggunaan resin lain.
ANATOMICAL CHANGES OF KEKABU WOOD (Bombax ceiba L.) DUE TO MECHANICAL DENSIFICATION Krisdianto, Krisdianto; Balfas, Jamal
Indonesian Journal of Forestry Research Vol 2, No 1 (2005): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2005.2.1.27-36

Abstract

Kekabu wood  (Bombax  ceiba L.), which is  locally known as kapok or randu  has long been planted  as crops troughout  the country, as fiber producer aimed for stuffing  pillow. This species is considered as a giant tree which could produce a large quantity of timber. Unfortunately, the timber is too soft, having low density and several physical defects during drying, limiting its uses in conventional wood processing. Any treatment which could significantly increase its structural density may be useful for diversifying the uses of this timber.   This study examined some anatomical changes that may exist during mechanical densification. Wood samples measuring 40 mm thick, 40 mm wide and 500 mm long were steamed at 126°C for 30 minutes prior to  pressing of 23.75 kg/cm.  Anatomical measures were undertaken using light microscope and scanning electron microscope  on both treated and untreated samples. Results showed that the treatment  significantly reduced void volume and ray distance of approximately a half the initial wood structure, followed by an increased in wood density of more than 50%.
Co-Authors Abdurachman Abdurachman Efrida Basri Jasni Jasni Krisdianto Sugiyanto Nurwati Hadjib