Danang Sudarwoko Adi
Research Center for Biomaterials, Indonesian Institute of Sciences (LIPI)

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CENTRAL KALIMANTAN’S FAST GROWING SPECIES: SUITABILITY FOR PULP AND PAPER Adi, Danang Sudarwoko; Wahyuni, Ika; Risanto, Lucky; Rulliaty, Sri; Hermiati, Euis; Dwianto, Wahyu; Watanabe, Takashi
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (624.734 KB) | DOI: 10.20886/ijfr.2015.2.1.%p

Abstract

Fast growing wood species could be promising to fulfill the gap between wood demand and supply. Due to their low quality, the utilization of fast growing wood species has been limited to pulp and paper. Our previous study on the fiber characteristic and density of the 30 unutilized fast growing wood species from PT Sari Bumi Kusuma, Central Kalimantan, showed that there were five species which could be promising as pulp and paper material. These wood species have fiber lengths of more than 2200 µm. This research was conducted to get information another property of the five woods to more discover their potential utilization, especially for pulp and paper material. The wood species investigated were Endospermum diadenum, Dillenia sp., Adinandra dumosa, Adinandra sp., and Nauclea junghuhnii. The results showed that these five species have a long of fiber length, which are classified in Class I, low to medium density, fiber derived value which the total score felt in the class I. The chemical compositions showed that extractive, holocelullose, α-cellulose, and lignin contents were 1.74-4.12%, 62.73-73.83%, 37.24-46.97%, 29.68-38.92%, respectively. Based on fiber characteristic, density, and chemical properties, these five species could be used as an alternative raw material for pulp and paper industries. 
EVALUATION OF THE WOOD QUALITY OF PLATINUM TEAK WOOD Adi, Danang Sudarwoko
Teknologi Indonesia Vol 39, No 1 (2016)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jti.v39i1.241

Abstract

The quality of platinum teak wood (Tectona grandis), which is developed by Indonesian Institute of Sciences(LIPI) through tissue culture method was observed in this study. The aims were to asses and evaluate the woodquality, i.e. physical and mechanical properties, and also to investigate the potential use as well as the challengeof this wood in the future compared to others wood, especially with the conventional ones. Two-year-old platinumteak wood was analyzed for physical properties, while five-year-old platinum weak was analyzed for physicaland mechanical properties. Both of these woods were planted in Cibinong, Bogor. Ten-year-old teak wood fromcommunity forest in Serpong, Tangerang and secondary data from various conventional teak woods from variousregions were used as comparisons. The results show that physical properties of 2-and 5-year-old platinum teakwood are better than 10 years teak wood from community forest. The basic densities of 2-and 5-year-old platinumteak wood are 0.50 and 0.53 g/cm3, respectively, while ten-year-old community forest teak wood is 0.42 g/cm3. Thedimensional stability of 5 years platinum teak wood is low and similar to ten-year-old community and progeny testteak wood, which the value of tangential and radial ratio (TR ratio) of this wood is 2.16. TR ratio of two-year-oldplatinum teak wood is ~1. The MOR of five-year-old platinum teak wood is 919.79 kg/cm2. This value is almostsimilar to 2030-year-old conventional teak wood from East Java. Almost all of wood qualities depend on age ofthe trees. Therefore, it is predicted that platinum teak wood has a good potency to be used for structural applicationsas well as for furniture.