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KARAKTERISTIK BALOK BAMBU LAMINA SUSUN TEGAK DARI BILAH BAMBU ANDONG (Gigantochloa pseudoarundinacea (Steud.) Widjaja) I.M. Sulastiningsih; Adi Santoso; Krisdianto
Jurnal Penelitian Hasil Hutan Vol. 34 No. 3 (2016): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2016.34.3.167-177

The objective of the study was to determine the effect of various layer compositions on the properties of 3-layer vertically glued laminated bamboo beam (LBB). Bamboo strips for LBB fabrication were prepared from mature culms (± 4 years old) of andong bamboo (Gigantochloa pseudoarundinacea (Steud.) Widjaja) collected from private gardens in West Java. The strips were pre-treated by soaking them in 7% boron solution for four hours. Three-layer LBBs were manufactured with six different layer compositions, including bamboo combination with wood planks of manii (Maesopsis eminii Engl.) or sengon (Falcataria moluccana (Miq.) Barneby & J.W. Grimes) as the core layer. The LBB was manufactured using Water Based Polymer-Isocyanate (WBPI) adhesive. The glue spread and cold pressing time applied were 250 g/m and one hour, respectively. Results showed that the average density, moisture content, thickness swelling, and width expansion of LBB were 0.65 g/cm ; 11.1%; 2.09%; and 1.99%, respectively. No delamination occurred in all samples using WBPI adhesive, which indicates high bonding quality. The average bonding strength and percentage bamboo failure (dry test) of LBB were 61.6 kg/cm and 90%, respectively. The physical and mechanical properties of LBB were significantly affected by the layer composition. The presence of wood laminates as the core layer of LBB and the cross wide orientation of the core layer decreased mechanical properties of LBB. On the contrary, the presence of cross-layer in LBB structure increased dimensional stability of the produced LBB.Three-layer thick laminated bamboo beam made of vertically glued andong bamboo strips with various constituted layer composition and all constitued layers laminated together in parallel grain direction had strength values comparable to those of class II of solid wood strength, eventhough the core layer was made of sengon or manii planks.

PEMANFAATAN EKSTRAK KAYU MERBAU UNTUK PEREKAT PRODUK LAMINASI BAMBU Adi Santoso; I.M. Sulastiningsih; Gustan Pari; Jasni
Jurnal Penelitian Hasil Hutan Vol. 34 No. 2 (2016): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2016.34.2.89-100

The report describes the useof adhesive made frommerbau wood extract (Intsia Spp.) which is allowed tocopolymerize with resorcinol, formaldehyde under alkaline conditions, and tapioca as an extender. The adhesive was used to manufacture three-ply composite board consisting of a back and core layers made from sengon (Falcataria mollucana), and jabon (Anthocephalus chinensis), while the face layer was made either one of three bamboo species, namely, andong (Gigantochloa pseudoarundinacea), mayan (Gigantochloa robusta Kurz.), and bitung (Dendrocalamusasper Schult. F.). Result shows that physical-mechanical properties of the composite board with using adhesive by formula (% of weightratio) Merbau extract :Resorcinol 50%: Formaldehyde 37%:Extender=100 : 10 : 10 : 5) were similar with to those of products made of synthetic phenolic adhesive and classified as an exterior quality type with E or 0 F**** typesof low formaldehyde emission.

PENGARUH JENIS BAMBU, WAKTU KEMPA DAN PERLAKUAN PENDAHULUAN BILAH BAMBU TERHADAP SIFAT PAPAN BAMBU LAMINA I.M. Sulastiningsih; Adi Santoso
Jurnal Penelitian Hasil Hutan Vol. 30 No. 3 (2012): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2012.30.3.199-207

The objectives of this study were to determine the effects of bamboo species, pressing time and pre-treatment of bamboo strips on the properties of laminated bamboo board (LBB). Bamboo strips for LBB fabrication were prepared from mature culms (± 4 years old) of andong bamboo (Gigantochloa pseudoarundinacea) and mayan bamboo (Gigantochloa robusta) collected from private gardens in West Java. The stript from each bamboo species were assigned into 3 groups iry pre-treatment methods, untreated, cold soaking in 7% boron solution for 2 hours, and bleached with 15% bydrogen perocide solution. The LBB was manufactured wring urca formaldeiryde (UF) added with wheat flour equal to 10% of UF. The cold pressing time applied were 4 hours and 5 hours. The results showed that the average density, moisture content and thickness swelling of laminated bamboo boards were 0.76 g) cum', 9.70% and 3.97% respectively. No delamination occurred in all samples using UF Jur, abich indicating high bonding quality. The average bonding strength (dry tests of laminated bamboo board made from andong was bigber (74.8 kg) cnl) than that of mayan bambou (67.9 kylen). Preservation and bleaching treatment of bamboo strips reduced the strength of 1.BB. Several properties of 1.BB were not significantly affected try bamino species esccept the compression strength. In general three-layer thick laminated bamboo board either made from andong or masan bambos hal strength values cumparable to wood strength clars 1. ubereas those stripe bleached witi 15% bydrogen perascide solution bad strength valuer similar to wood strength dair H. Laminated bamboo board is suitable for solid wood sulistitute and performs as alternative material for furniture, interior dezen and building materials.

KARAKTERISTIK LAMINASI BAMBU PADA PAPAN JABON Achmad Supriadi; I.M. Sulastiningsih; Subyakto
Jurnal Penelitian Hasil Hutan Vol. 35 No. 4 (2017): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2017.35.4.263-272

Jabon (Anthocephalus cadamba Miq.) has been widely planted by communities as an alternative of building and furniture materials. However, there are two inferior jabon wood proferties i.e. low strength (Class IV) and less durable (Class V). Jabon-Bamboo Laminated Board (JBLB) is one posible product that may be developed to improve jabon’s wood properties. This study investigates quality improvement of jabon boards due to fabrication as JBLB and the effect of bamboo layers number on JBLB properties. Andong bamboo (Gigantochloa pseudoarundinaceae (Steudel) Widjaja) and mayan bamboo (Gigantochloa robusta Kurz) were used in this study. Initially, jabon boards and 3 bamboo strips were preserved by soaking in 7% boron solution until reaching the targeted retention of 6 kg/m . The JBLB were manufactured in four different layer compositions using Isocyanate adhesive. The glue spread and cold pressing time 2 applied were 250 g/m and one hour, respectively. Results showed that quality of JBLB was significantly affected by the number of bamboo layers, except bonding strength. Bamboo lamination on jabon board has increased the product density by 10%, modulus of elasticity (MOE) by 71%, modulus of rupture (MOR) by 34% and compression strength by 20% compared with the initial jabon properties. Strength values of JBLB are classified into wood strength class-III .

PENGKLASIFIKASIAN KETAHANAN JENIS BAMBU 20 TERHADAP RAYAP KAYU KERING Jasni; Ratih Damayanti; I.M. Sulastiningsih
Jurnal Penelitian Hasil Hutan Vol. 35 No. 3 (2017): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2017.35.3.171-183

The resistance of twenty bamboo species from different regions of Indonesia were tested against drywood termites (Cryptotermes cynocephalus Light.). Each bamboo species was cut into dimension of 5 cm × 2.5 cm × 1 cm. The test was conducted according to SNI 7207-2014. Parameters mass loss percentage of bamboo, survival rate of the termites, and degree of attack (subjectively) were observed as the basic to classify the resistance of bamboo against drywood termites. According to the mass loss percentage, the bamboo species were assigned into five groups: two bamboo species as resistance class I, six bamboo species as class II, five bamboo species as class III, four bamboo species as class IV, and three bamboo species as class V. Based on the survival rate of the termites, the natural resistance of bamboo could be assigned into five groups: two bamboo species as resistance class I, one species as class II, ten bamboo species as class III, five bamboo species as class IV, and two bamboo species as class V. The classification according to the degree of attack showed that two bamboo species experienced severely attack (38 - 40.5% / score 90), while the rest eighteen bamboo species had medium attack (18.4 - 34.9% / score 70).

SIFAT FISIS DAN MEKANIS PAPAN UNTAI BERARAH DARI BAMBU TALI ( (J.A. & J.H. Schultes) Kurz) Gigantochloa apus I.M. Sulastiningsih; Dian Anggraini Indrawan; Jamal Balfas; Adi Santoso; Mohammad Isa Iskandar
Jurnal Penelitian Hasil Hutan Vol. 35 No. 3 (2017): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2017.35.3.197-209

Bamboo is potential as an alternative material to substitute wood. This paper examines the effects of using different resin contents and strand dimensions on the properties of its oriented strand board (bamboo OSB). Tali bamboo (Gigantochloa apus (J.A. & J.H. Schultes) Kurz) was used as raw material in manufacturing the bamboo OSB. Laboratory scale oriented bamboo strand boards were fabricated using each bamboo strand length (7.5, 10, and 15 cm) and glued with liquid phenol formaldehyde adhesive at various resin contents (6, 7 and 8%) of the bamboo strands dry 3 weight. Results show that the average density of fabricated bamboo OSB was 0.75 g/cm . Physical and mechanical properties of bamboo OSB were significantly affected by resin content, except the modulus of elasticity (MOE). Higher resin content gave better physical and mechanical properties of the boards. MOE of bamboo OSB was also significantly affected by the strand length. The longer strand dimension produces boards with higher MOE values. All oriented bamboo strand boards studied meet the Indonesian and Japanese Standard requirements of type 24 particleboard and also meet the British Standard requirements of both Type OSB/2 and Type OSB/3.

KUALITAS HARDBOARD DUA JENIS BAMBU DENGAN TAMBAHAN TANIN RESORSINOL FORMALDEHIDA Dian Anggraini Indrawan; I.M. Sulastiningsih; Rossi Margareth Tampubolon; Gustan Pari; Adi Santoso
Jurnal Penelitian Hasil Hutan Vol. 35 No. 1 (2017): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2017.35.1.29-42

All kinds of ligno-cellulose fiber stuffs are technically suitable for hardboard manufacture. In Indonesia, currently the available conventional ligno-cellulose fibers (esp. tropical natural-forest woods) become scarce and depleted. Meanwhile, domestic fiberboard-production is lower than its demands. Alternative fibers, abundantly potential and largely still unutilized, should be introduced, e.g. bamboo. Research on bamboo utilization for hardboard has been carried out using two bamboo species i.e. tali bamboo (Gigantochloa apus) and ampel bamboo (Bambusa vulgaris). Each bamboo species was pulped using open hot-soda semi-chemical process. Five proportions of bamboo pulp mixtures were prepared from tali-bamboo pulp and ampel-bamboo pulps i.e: 100%+0%, 75%+25%, 50%+50%, 25%+75%, and 0%+100%. Tannin-resorcinol-formaldehyde (TRF) adhesive was added to each bamboo pulp mixtures at three different resin contents, i.e. 0%, 6% and 8% based on dry weight of the bamboo pulp mixture. Bamboo hardboards were manufactured using wet forming process and the resulted boards were then tested for their physical and mechanical properties. Results showed that addition of TRF (up to 8%) improved hardboard properties. Hardboard made from the ampel-bamboo pulp (100%) produced the highest hardboard quality, as its properties mostly conform with the standards (JIS and ISO) requirements for density, modulus of elasticity (MOE), modulus of rupture (MOR) and internal bond (IB); while hardboards made from tali-bamboo pulp (100%) possessed the lowest quality. Hardboard from tali-bamboo pulp and ampel-bamboo pulp mixture (at 50%+50% and 25% + 75% proportions) afforded the second and third performances. The least prospective tali-bamboo pulp (100%) could expectedly be improved by using more TRF.

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2014.32.3.221-234

The objective of this study was to determine the effect of layer orientation composition on the properties of bamboo composite lumber (BCL). Bamboo strips for BCL fabrication were prepared from mature culms (± 4 years old) of andong bamboo (Gigantochloa pseudoarundinacea (Steudel) Widjaja) collected from private gardens in West Java. The strips were pre-treated by soaking it in 7% boron solution for 2 hours. Five-layer BCLs were manufactured with 4 different compositions of layer orientation. The BCL was manufactured using water based polymer-isocyanate (WBPI) adhesive. The glue spread and cold pressing time applied were 250 g/m² and 45 minutes, respectively. Results showed that the average density, moisture content, thickness swelling, and width expansion of BCL were 0.79 g/cm³, 12.60%, 2.38%, and 1.13%, respectively. No delamination occurred in all samples using WBPI adhesive, which indicating high bonding quality. The average bonding strength (dry test) of BCL was 70.4 kg/cm². The physical and mechanical properties of BCL were significantly affected by layer orientation composition. The mechanical properties of BCL decreased as the number of cross-layer increased in the BCL structure. On the contrary, the present of cross-layer in BCL structure increased dimensional stability of the produced BCL.

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