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All Journal Jurnal Penelitian Hasil Hutan Jurnal Penelitian Hasil Hutan

Paribotro Sutigno

Pusat Penelitian dan Pengembangan Hasil Hutan

Author-ID : 2621512

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Energy Materials Science & Nanotechnology

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SIFAT VENIR DAN KAYU LAPIS LIMA JENIS KAYU HUTAN TANAMAN INDUSTRI Memed Rozak; M I Iskandar; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 5, No 3 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Five Indonesian wood species were investigated for their veneer and plywood properties. These species include are meranti merah (Shorea stenoptera Burck.), akasia (Acacia magnium Willd.), ampupu T (Eucalyptus urophylla), ampupu A (Eucalyptus urophylla) and ekaliptus (Eucalvptus platiphvlla F.v.M). . Four wood species were peeled in cold condition. Only ekaliptus was found unsuitable for peelling due to high density and the interwoven nature of the fibers. Veneer of 1.5 mm thickness could be produced satistactorily at a cutting angle between 90o92°. Average shrinkage of the veneer is 8.28%. Average swelling from oven dry condition to completely saturabed is 3.76%. Water resistance bonding strength for all wood species studied was m conformity with the Indonesian, Japanese, and German standards. Average thickness reduction due to pressing pressure during plywood making is 0,24 mm. .Average specific gravity of the plywood appeared to 0.048 be percent higher than that of the wood from which they are made of.

SIFAT PAPAN WOL KAYU DARI 19 JENIS KAYU SULAWESI TENGAH l M Sulastiningsih; Paribotro Sutigno; Rozak Memed
Jurnal Penelitian Hasil Hutan Vol 4, No 3 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The results of laboratory test on the properties of wood-wood boards manufactured from 19 individual wood species obtained from Central Sulawesi province are reported in this paper. The tests comprised board density, moisture content, thickness reduction due to compression and bending strength.The results show an average yield of wood-wool is 238 kg per cubic meter of log input. Four wood species required presoaking for wood-wool making. The physical and mechanical properties of the wood-woo/ board made from seven wood species mineralized with CaCl2 solution or Ca(OH2) suspension meet DIN 1101 standard.

PENGARUH JUMLAH LAPISAN TERHADAP SIFAT BAMBU LAMINA l M Sulastiningsih; Nurwati Nurwati; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 14, No 9 (1996): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Bambu merupakan hasil hutan non kayu, banyak dijumpai dan dimanfaatkan untuk berbagai keperluan. Dalam rangka peningkatan mutu dan pemanfaatan bambu untuk bahan bangunan, telah dilakukan penelitian sifat fisis dan mekanis bambu lamina yang dibuat dari bambu betung (Dendrocalamus asper) dengan variasi jumlah lapisan (2, 3, 4 dan 5 lapis) yang direkat dengan perekat urea formaldehida cair. Hasil penelitian menunjukkan bahwa sifat fisis dan mekanis bambu lamina dari bambu betung tidak dipengaruhi oleh jumlah lapisan kecuali keteguhan rekat berdasarkan uji geser tarik dalam keadaan kering (makin banyak jumlah lapisan makin tinggi keteguhan tarik). Sifat perekatan bambu lamina dari bambu betung cukup baik dan memenuhi standar Jepang untuk uji delaminasi. Berdasarkan nilai kerapatan, keteguhan lentur statis dan keteguhan tekan, bambu lamina betung setara dengan kayu kelas kuat II.

SIFAT PAPAN WOL KAYU DARI 8 JENIS KAYU MALUKU UTARA I M Sulastiningsih; Paribotro Sutigno; M l Iskandar
Jurnal Penelitian Hasil Hutan Vol 13, No 2 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The result of laboratory test of wood-wool board properties manufactured from 8 individual wood species obtained from North Maluku are reported in this paper. The tests comprising board density, moisture content, thickness reduction due to compression, and bending strength.The study reveals that the average yield of wood-wool is 492. 75 kg/m3 of log input. The wood-wool of Parinari corymbosa, Shorea koordersii, Hopea sp. and Horsfieldia sylvestris must be soaked in cold water for 24 hours prior to wood-wool board manufacture, while the otherfour species do not require the soaking. The physical and mechanical properties of wood- wool board from seven wood species mineralized with Ca CJ 2 are in comformity with the DIN 1 101 standard. Only six wood species, however, mineralized with Ca(OH)2 suspension meet the standard requirement. The identical commercial name of wood not necessarily produce a comparable quality board. Apart from the species, growth and environmental factors are believed to contributing to board properties.

HUBUNGAN ANTARA KETEGUHAN GESER DENGAN KETEGUHAN REKAT INTERNAL PAPAN PARTIKEL Paribotro Sutigno; I M Sulastiningsih
Jurnal Penelitian Hasil Hutan Vol 10, No 1 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

One of the partideboard properties that must be tested is internal bond strength or tensile strength perpendicular to surface. the testing procedure is relatively difficult because before applying a tension load vertically to the board face, the specimen must be adhere to steel or wood blocks for seuerol hours to obtain good adhesion. To simplify the pro- cedure, the use of another testing procedure called shear strength test was tried. It is found that there is a relationship between shear strength (X) and internal bond strength (Y) which can be expressed by linear regression equations i.e,: Y = - 0.105 + 0.180 X for interior particleboard and Y = - 0.925 + 0.398 X for exterior particleboard. The interior particleboard specimens were tested under dry condition whereas exteriorparticleboard specimem were boiled for two hours before testing. Both regression equations can not be pooled, Based on the result it can be cohcluded that internal bond strength of particleboard can be estimated by using its shear strength value.

SIFAT KAYU LAPIS PINUS DENGAN BEBERAPA MACAM KETEBALAN Suwandi Kliwon; M I Iskandar; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 5, No 3 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Experimental plywood panels were made from bolts of tapped and untapped Pinus merkusii trees obtained from East Java. The bolts were rotary peeled into veneers of 1.5 mm, 2.0 mm and 3.0 mm thick. Veneer of 1.5 mm was exclusively used as face veneer and others for core. Plywood panels were glued with urea formaldehyde resin. Plywood were made with 5 thickness variation (5.00 mm, 6.00 mm, 7.5 mm, 9.0 mm and 12.00 mm). The physical and mechanical properties of all panels were tested according to the ASTM standard, and bonding strength of plywood was tested according to Indonesian, Japanese (JAS) and Germany (DIN) standards. The results indicated that there is no significant difference in moisture content, density of plywood made tapped and untapped pine wood. Mechanical properties of plywood (bending strength, tensile strength and compression strength) were significant difference made of tapped and untapped pine wood also vice versa with its thickness variation.Bonding of glue of plywood there is no significant difference made tapped and untapped pine wood. Only plywood which tested its bonding strength using Germany standard indicated significant shear strength of plywood with thick ness 5.00 mm is better than that of the 6.00 mm thickness.Modulus of rupture and compression strength of tapped pine plywood are better than the untapped one.

PENGARUH PENYADAPAN DAN KADAR PEREKAT TERHADAP SIFAT PAPAN PARTIKEL TUSAM Rozak Memed; I M Sulastiningsih; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 5, No 3 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The result of a study on the properties of particle board made from pine wood is reported in this paper. The pine as raw material was classified into three groups i.e. tapped, untapped, and combination of them. The particle board was manufactured by using urea formaldehyde resin with four levels i.e. 6%, 8%, 10%, and 12% by weight of wood dry basis.The result reveals that the average density of particle board made of tapped, untapped, and combination of them is 0.61 g/cm3, so that it can be classified as medium density particle board. The properties of particle board were affected by both tapping and glue proportion. However, density and internal bond were affected by glue proportion but not by the raw material.Except for water absorption, overall properties of particle board made from tapped pine appeared to have superior properties than that from untapped one.

Pengaruh komposisi perekat tanin urea formaldehida terhadap keteguhan rekat kayu lapis meranti Adi Santoso; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 13, No 3 (1995): 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.1995.13.3.87-93

Based on previous research tannin formaldehyde resin from Acacia decurens bark can be used for exterior plywood adhesive. To reduce the cost, the effect of urea addition to produce tannin urea formaldeliyde resin has been studied. The other treatment employed is percentage of paraformaldehyde as hardener.The results show that the properties of tannin urea formaldehyde resin conform with Indonesian standard for phenol formaldehyde resin. The effect of weight ratio based on mol ratio on the plywood bonding strenght is significant, while the effect ofpercentage of hardener is not significant. the weight ratio tannin.urea = 1:2 with three percentages of hardener meet German standardfor exterior plywood (type AW-100). The weight ratio tannin urea = 1=2,5 with 2,5% and 5% hardener meet the standard, while the weight ratio tannin:urea = 1:3 do not meet the standard. The plywood bonding strenght tends to decrease if using more urea. Based on economic consideration, it is recommended 10 use weight ratio tannin.urea = 1:2,5 based on mol ratio with percentage of hardener 2,5% of liquid resin.

SIFAT VENIR DAN KAYU LAPIS DARI KAYU SENGON DAN KARET PADA BEBERAPA MACAM UMUR M I Iskandar; Suwandi Kliwon; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 12, No 6 (1994): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The result of the suitability study of two wood species as raw material for veneer and plywood are reported. The wood raw material used rubber wood (Hevea brasiliensis) and sengon (Paraserianthes falcataria). The wood used were obtained from different age classes i.e.10 and 20 years for rubber wood and 10 and 15 years for sengon. The study consisted of log peeling characteristic, veneer properties and some physical-mechanical properties of plywood (triplex and multiplex).All of the logs from two wood species could be peeled in cold condition, producing 1,5 mm veneer at a cutting angle between 89o30'-91o30'. The average shrinkage of veneer is 4.51% and the average veneer swelling from oven-dry to air dry is 3.30 %.The bonding strength of plywood from all wood species conform with the Indonesian standard, German standard and Japanese standard for type 11 or water resistant. The spesific gravity and mechanical properties of plywood from the older tree tends higher than that from the younger tree.

SIFAT PAPAN WOL KAYU DARI 12 JENIS KAYU HUTAN TANAMAN INDUSTRI I M Sulastiningsih; Rozak Memed; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 5, No 4 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The results of laboratory test of wood-wood board properties made from 12 individual wood species obtained from West Java, Lampung and East Nusa Tenggara province are reported in this paper. The properties tested were board density, moisture content, thickness reduction due to compression and bending strength.The study has revealed that Eucalyptus urophylla and Eucalyptus platiphylla F.V.M. obtained from natural forests are impossible to plane because they are very hard. The average yield of wood-wool from the rest is 454.43 kg percubic meter of log input. These wood-wool can be processed to become wood-wool boards without first immersing them in cold water. The physical and mechanical properties of wood-wool boards made from seven wood species (meranti merah I, pinus I, mahoni uganda, meranti tembaga, leda, akasia and meranti merah II) catalyzed with CaCl2 solution are in conformity with the DIN 1101Standard. However, only four wood species (meranti merah I, meranti tembaga, leda and meranti merah II) catalyzed with Ca(OH)2 suspention meet the standard requirement.

Co-Authors Adi Santoso Adi Santoso Santoso Adl Santoso Ignasia Maria Sulastiningsih Jasni Jasni M I Iskandar M I Jslrandar M I lskandar M Isa Iskandar M l Iskandar Memed Rozak Nurwati Nurwati Rodjak Memed Rozak Memed Setiasih Irawanti Setiasih lrawati Suwandi Kliwon

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