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All Journal Jurnal Riset Industri Hasil Hutan Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Penelitian Hasil Hutan Jurnal Nasional Teknologi Terapan Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society Mechanical Engineering for Society and Industry Jurnal Ilmu Kehutanan Jurnal Penelitian Hasil Hutan

Ragil Widyorini

Departemen Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada, Jl. Agro No. 1, Bulaksumur, Sleman, 55281

Author-ID : 416849

Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Evaluasi terhadap Stimulan Ethephon dalam Penyadapan Pinus merkusii (Evaluation on Ethephon Stimulant to Pinus merkusii Tapping) Ganis Lukmandaru; Sigit Sunarta; Tomy Listyanto; Kasmudjo Kasmudjo; Rini Pujiarti; Ragil Widyorini
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The aim of this study was to find out the effect of Ethephon, an ethylene releasing compound, in a combination with sulfuric acid resin production Pinus merkusii. The tested stimulants were ETRAT; SR4; 20% sulfuric acid; 20% sulfuric acid - Ethephon 2%; 3.3% sulfuric acid – 4.1% Ethephon; and sulfuric acid – 8.3% Ethephon. Trees without stimulant spraying were the controls. The results showed that for daily production, the first-day observation gave the highest value but decreased drastically after second-day observation in a varied degree depent on the stimulants. On the basis of accumulated production, the addition of Ethephon in a high or low level of sulfuric acid concentration exhibited significantly higher resin production compared to that of ETRAT; SR4; and 20% sulfuric acid stimulants as well as control trees. It increased resin production by 98.0-150.6% compared to control trees in class age of VII and increased by 140.9-227.1% in class age of IV stands. Moderate significant correlations (r=0.65) were observed between the values of resin production and tree diameter (controls) as well as between the values of resin production and tree diameter of trees treated by sulfuric acid stimulants (r=0.65-0.82).

Karakteristik Papan Partikel Limbah Kayu Mahoni dengan Perlakuan Pengawetan Asap Cair Agus Ngadianto; Ragil Widyorini; Ganis Lukmandaru
Jurnal Nasional Teknologi Terapan (JNTT) Vol 1, No 1 (2017): NOVEMBER
Publisher : Penelitian dan Pengabdian Kepada Masyarakat Sekolah Vokasi Universitas Gadjah Mada

This research focused on the characteristics of particleboard made from preservation treated-particl es. Mahagony wood bioma ss waste was used as raw material. Liquid smoke at different concentrations (0%, 2.5%, and 5%) was applied for 24hours onto the particles. After dried in air dry condition, the particles were mixed with urea formaldehyde resin (7.5% and15%), and then were pressed using hot pressing system at 150oC for 10 minutes. The result showed that the particleboardusing 15% urea formaldehyde resin and made form 5% liquid smoke treated-particles provided the best performance, thatmet Japanese Industry Standard (JIS) A 5908. The mortality value of dry wood termites Cryptotermes cynocephalus Lightand the weight loss after termite attack at the same condition were 90.67% and 0.408%, respectively.

The Role of Composites for Sustainable Society and Industry Ragil Widyorini; Nasmi Herlina Sari; Muji Setiyo; Gunawan Refiadi
Mechanical Engineering for Society and Industry Vol 1 No 2 (2021)
Publisher : Universitas Muhammadiyah Magelang

In the last few decades, the global community's demands are getting stronger for more environmentally friendly materials. Natural fiber reinforced composites have been applied as reinforcement in concrete, sound absorbers, buildings, aeronautical, aerospace, sanitation, electronics, bridge decks, interior, automotive, sports equipment and furniture industries, modular structures, and others. Natural fibers are receiving high attention due to their sustainability, environmental friendliness, low density, low cost, low abrasiveness, renewability, and biodegradability, as well as contributing to the consumption of CO2 gas. As reported by many researchers, Indonesia has several natural resources for natural fibers such as bark fiber, leaf fiber, seed/fruit fiber, grass fiber, stalk fiber, and wood fiber.

Kajian Ekosistem Mangrove Hasil Rehabilitasi pada Berbagai Tahun Tanam untuk Estimasi Kandungan Ekstrak Tanin di Pantai Utara Jawa Tengah Erny Poedjirahajoe; Ragil Widyorini; Ni Putu Diana Mahayani
Jurnal Ilmu Kehutanan Vol 5, No 2 (2011)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Penelitian ini dilakukan di kawasan rehabilitasi mangrove Pantai Utara Pemalang dan Rembang, Dari dua lokasi tersebut masing-masing di pilih tanam mangrove yang sama. Setiap tahun tanam dibagi dalam tiga zona dari arah laut ke darat. Kondisi ekosistem mangrove dikaji melalui pendekatan terhadap pengukuran kerapatan, rata-rata tinggi dan diameter, ketebalan lumpur, salinitas dan kandungan bahan organik pada setiap zonasi dan setiap tahun tanam. Untuk memperkirakan kandungan ekstrak tanin, pada setiap tahun tanam diambil 3 sampel vegetasi (dalam satu zona diambil satu sampel), kemudian dikelupas kulitnya, ditimbang dan dilakukan analisis laboratorium. Kandungan ekstrak tanin dalam satu tahun tanam dapat diestimasi dengan cara menghubungkan dengan nilai kerapatannya. Uji varian untuk dua sifat yang berbeda, dilakukan untuk melihat signifikasi kerapatan tanaman pada setiap tahun tanam pada dua lokasi rehabillitasi mangrove. Hasil penelitian menunjukkan bahwa estimasi kandungan ekstrak tanin di Pemalang dan Rembang pada tahun tanam 2002 rata-rata menunjukkan angka yang lebih tinggi daripada tahun tanam 2003 dan 2006. Pada tahun 2002 di Pemalang, estimasi ekstrak tanin sebesar 105,93 kg/ha sedangkan di Rembang mencapai 159,23 kg/ha. Pada tahun tanam 2006 mangrove di Pemalang mempunyai kandungan ekstrak tanin sekitar 80,90 kg/ha, sedangkan di Rembang sekitar 143,36 kg/ha.Kata kunci: Mangrove, ekosistem, ekstrak tanin. A Study of Rehabillitated Mangrove Ecosystem in Different Planting Year to Estimate Tannin Extract Content in Northern Coast of Central JavaAnstractThe research was conducted in the mangrove plantation areas of Pemalang and Rembang North coasts. From those two areas, mangrove vegetations with the same three plantation ages were chosen which were then divided into three zones from the sea. Tree density, height and diameter, the depth of sediment, water salinity and the content of organic matter were measured and assessed for each mangrove zones and plantation ages. In order to estimate the content of tannin extract of a mangrove tree, three mangrove trees of each plantation age were taken as samples. The wood of the trees were then peeled off, measured the weight and taken to the laboratory to analyze their tannin extract content. The content of tannin extract of the whole mangrove areas was obtained by multiplying the average of tannin extract content per tree with the vegetation density of those two mangrove areas. Varians analysis was employed to find out the significant different of the density three plantation ages of two mangrove rehabilitation areas. The results showed that for plantation years of 2002, the tannin extract content at both mangrove plantation areas of Pemalang and Rembang in averages was estimated to have a higher amount than those of plantation year 2003 and 2006. Respectively, the tannin extract content of plantation year of 2002 in Pemalang and Rembang were estimated to have 105.93 kg/ha and 159.23 kg/ha tannin extract. Mangrove vegetation with plantation year of 2006 in Pemalang contained 80.90 kg/ha, while for Rembang is 146.36 kg/ha.

Pengaruh Konsentrasi Asam Sitrat dan Suhu Pengempaan terhadap Kualitas Papan Partikel Pelepah Nipah Ragil Widyorini; Tibertius Agus Prayitno; Ari Puspa Yudha; Bhaktiar Adi Setiawan; Budi Hari Wicaksono
Jurnal Ilmu Kehutanan Vol 6, No 1 (2012)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Papan partikel tanpa perekat sintesis atau binderlessboard merupakan alternatif produk ramah lingkungan yang potensial dikembangkan di Indonesia. Kelemahan produk tersebut diantaranya adalah kestabilan dimensinya yang relatif rendah. Alternatif perbaikan produk bisa dilakukan dengan menambahkan bahan pengaktif komponen kimia. Asam sitrat memiliki tiga gugus karboksil dan diharapkan dapat membentuk ikatan ester dengan gugus hidroksil pada permukaan kayu. Penelitian menggunakan asam sitrat relatif baru dan belum banyak dikembangkan, oleh karena itu penelitian ini ditujukan untuk pengembangan produk biokomposit dengan menggunakan asam sitrat sebagai bahan pengikat. Bahan yang digunakan adalah pelepah nipah dengan ukuran partikel (halus dan kasar), konsentrasi asam sitrat (0% dan 10%), dan suhu pengempaan (180ºC dan 200°C). Pengujian sifat fisika dan mekanika dilakukan berdasarkan Japanese Industrial Standard untuk papan partikel (JIS A 5908). Penambahan asam sitrat memperlihatkan kenaikan sifat fisika (penyerapan air) dan mekanika papan partikel. Perbedaan ukuran partikel mempengaruhi sifat mekanika papan partikel dimana ukuran partikel kasar memberikan nilai mekanika yang lebih baik dibandingkan dengan ukuran partikel halus. Kualitas papan partikel optimum diperoleh pada kondisi pengempaan 180ºC, penambahan asam sitrat 10% dari partikel ukuran kasar dengan nilai pengembangan tebal 2,4%, penyerapan air 41%, kekuatan rekat internal 0,2 MPa, modulus patah 5,5 MPa, dan modulus elastisitas 1,6 GPa.Kata kunci: asam sitrat, pelepah nipah, konsentrasi asam sitrat, suhu pengempa Effect of Citric Acid Concentration and Pressing Temperature on the Quality of Particleboard from Nypa FrondAbstractBinderlessboard is one of the potential eco friendly products that can be developed in Indonesia. However, its boards usually have low in dimensional stability. Addition of the chemical agent, such as citric acid, that can improve the dimensional stability is needed. Citric acid has three hydroxyl groups that can be ester-linked with hydroxyl groups from wood. Researches on citric acid and its utilization are relatively limited. This research focused on the development of particleboard using citric acid as bonding agent. Nypa frond was used as raw material with two different sizes of particles, namely fine and coarse particles. Addition of citric acid of 10% air-dried particles was done for improving the dimensional stability. Pressing temperature was set at 180ºC dan 200°C during 15 minutes. Physical and mechanical properties were done according to Japanese Industrial Standard JIS A 5908. Addition of citric acid could improve physical and mechanical properties of the boards. Coarse particles provided the particleboards with better mechanical properties compared to fine particle. Boards that made from coarse particle and 10% citric acid at pressing temperature of 180ºC have optimum properties, i.e. thickness swelling 2.4%, water absorption 41%, internal bond strength 0.2 MPa, modulus of rupture 5.5 MPa, dan modulus of elastisity 1.6 GPa.

Pengaruh Suhu dan Metode Perlakuan Panas terhadap Sifat Fisika dan Kualitas Finishing Kayu Mahoni Ragil Widyorini; Khusnul Khotimah; Tibertius Agus Prayitno
Jurnal Ilmu Kehutanan Vol 8, No 2 (2014)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Perlakuan panas dikenal sebagai metode yang dapat digunakan untuk meningkatkan stabilitas dimensi dan menurunkan higroskopisitas. Di sisi lain, perlakuan panas dapat membuat warna kayu menjadi lebih gelap, penurunan sifat mekanika kayu, dan sifat wetabilitas kayu. Oleh karena itu, penelitian mengenai perlakuan panas pada kondisi yang optimum sangat menarik untuk dilakukan agar menghasilkan kayu dengan kualitas yang lebih baik. Tujuan penelitian ini adalah mengetahui pengaruh interaksi suhu dan metode perlakuan panas terhadap sifat fisika dan kualitas finishing kayu mahoni. Contoh uji perlakuan dibuat dari kayu mahoni yang berasal dari industri penggergajian kayu rakyat. Penelitian ini menggunakan 2 metode perlakuan panas yaitu metode oven dan penguapan (steaming) pada variasi suhu 90°C, 120°C, dan 150°C selama 2 jam waktu efektif. Pengujian sifat fisika diuji berdasarkan standar ASTM, yang meliputi : kadar air seimbang, perubahan dimensi, perubahan warna, dan wetabilitas. Pengujian finishing meliputi cross cut test, uji delaminasi, dan uji kekilapan (glossy test). Hasil penelitian menunjukkan bahwa interaksi antara suhu dan metode perlakuan panas berpengaruh sangat nyata terhadap perubahan warna, serta berpengaruh nyata terhadap penyusutan radial, cross cut test, dan uji delaminasi. Metode oven menghasilkan contoh uji dengan kadar air dan pengembangan radial yang lebih rendah, warna yang lebih terang, serta uji delaminasi yang lebih baik dibandingkan dengan metode penguapan.Kata kunci: perlakuan panas, metode oven, metode penguapan, suhu, finishing Effect of temperature and heat treatment on physical properties and finishing quality of mahagony woodAbstractHeat treatment is well known as a method for increasing dimensional stability and reducing hygroscopicity of wood. However, heat tratment can cause the color of wood become darker and reduce the wettability, as well as its mechanical properties. Therefore, the optimum condition of heat treatment is essential to be studied to obtain the high quality of properties treated wood. This research focused on investigating the heating temperature and treatment method on physical properties and finishing quality of mahagony wood. Two treatment methods, i.e. oven method and steaming method, were used in this research. The heating temperatures were set at 90°C, 120°C, and 150°C. The effective heating time was 2 h. The wood physical properties were tested according to ASTM standards and wood finishing quality were tested for its cross cut, delamination, and glossy test. The results showed that interaction between treatment method and heating temperature affected significantly on the change in color, radial shrinkage, cross cut test, and delamination test. Oven method resulted in reducing moisture content and radial shrinkage, light color, and better quality of wood, compared to steaming method.

Sifat Fisika Mekanika dan Ketahanan Papan Partikel Bambu dengan Perekat Asam Sitrat terhadap Serangan Rayap Kayu Kering Ragil Widyorini; Ari Puspa Yudha; Ganis Lukmandaru; Tibertius Agus Prayitno
Jurnal Ilmu Kehutanan Vol 9, No 1 (2015)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Penelitian mengenai penggunaan asam sitrat sebagai agen pengikat alami masih relatif sedikit. Oleh karena itu penelitian ini difokuskan pada pengaruh jumlah asam sitrat dan suhu pengempaan terhadap sifat papan partikel bambu, termasuk ketahanannya terhadap serangan rayap kayu kering. Bahan penelitian adalah partikel bambu petung. Komposisi kimia bahan baku bambu diuji untuk kadar ekstraktif, holoselulosa, lignin, dan alfa selulosa. Faktor pada penelitian ini adalah jumlah asam sitrat (0 - 40%) berdasarkan berat kering udara partikel) dan suhu pengempaan (200 oC dan 220 oC). Sifat fisika dan mekanika papan partikel diuji berdasarkan standar pengujian JIS A 5908. Analisis menggunakan Fourier transform infrared spectroscopy (FTIR) juga dilakukan untuk mengetahui perubahan gugus ester pada berbagai jumlah asam sitrat dan suhu pengempaan. Pengujian ketahanan terhadap serangan rayap kayu kering juga dilakukan dengan menghitung nilai pengurangan berat dan mortalitas rayap setelah 6 minggu. Hasil pengujian menunjukkan bahwa interaksi kedua faktor berpengaruh nyata terhadap nilai pengembangan tebal, penyerapan air, modulus elastisitas dan modulus patah. Intensitas gugus C=O yang ditunjukkan pada puncak 1720 cm-1 semakin bertambah besar seiiring dengan semakin banyaknya jumlah asam sitrat, yang menyebabkan kekuatan perekatan dan stabilitas dimensi papan partikel menjadi semakin kuat. Kondisi optimum pada penelitian ini adalah papan partikel dengan penambahan jumlah asam sitrat 20 % pada suhu pengempaan 200 oC dengan kualitas yang dapat memenuhi standar JIS A 5908 tipe 8. Penambahan asam sitrat dapat meningkatkan mortalitas rayap kayu kering secara nyata. Penambahan 20 % asam sitrat pada suhu pengempaan 200 oC menghasilkan nilai pengurangan berat 0,9 % dan mortalitas rayap 57 %.Kata kunci: bambu petung, asam sitrat, suhu pengempaan, jumlah asam sitrat. Mechanical properties and durability against the dry termite attacks of particleboard made from bamboo with citric acid as adhesive AbstractResearch on development of citric acid as natural adhesive are still limited. Therefore this research focused on effects of citric acid content and pressing temperature on properties of particleboard made from bamboo, including its durability to the dry termite attacks. Petung bamboo particles were used as raw materials. Chemical characteristics of petung bamboo were analyzed for its extractive, lignin, holocellulose and alpha cellulose. Factors used in this research were citric acid content (0 - 40 %) based on dry weight particles and pressing temperature (200 oC dan 220 oC). Properties of the particleboard were analyzed based on Japanese Industrial Standard (JIS) A 5908 for particleboard. Fourier transform infrared spectroscopy (FTIR) analysis was used for investigating the changes of ester groups at various citric acid content and pressing temperature. The dry termite resistance was then analyzed for its weight loss and mortality after 6 weeks. The results showed that interaction between two factors affected significantly on thickness swelling, water absorption, modulus of elasticity, and modulus of rupture. Intensity of C=O groups became stronger as increasing citric acid content, providing high mechanical properties and high dimensional stability. Optimum condition in this research was achieved at 20 % of citric acid content and 200 oC of pressing temperature, which the board properties met the requirement of JIS A 5908 type 8. Increasing of citric acid content would also increase the dry termite mortality. Addition of 20 % citric acid at 200 oC of pressing temperature produced particleboard with the weight loss was 0.9 % and 57 % of the dry termite mortality.

Kualitas Papan Partikel dari Pelepah Nipah dengan Perekat Asam Sitrat dan Sukrosa Mahdi Santoso; Ragil Widyorini; Tibertus Agus Prayitno; Joko Sulistyo
Jurnal Ilmu Kehutanan Vol 10, No 2 (2016)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Penggunaan perekat alami dan bahan baku non kayu dalam pembuatan papan partikel masih sangat terbatas. Sukrosa dan asam sitrat adalah dua bahan alami yang potensial sebagai perekat alami pengganti perekat sintetik berbasis formaldehida. Nipah (Nypa fruticans Wurmb.) merupakan bahan non kayu yang potensial dijadikan alternatif bahan baku papan partikel. Penelitian ini bertujuan untuk mengetahui kualitas papan partikel pelepah nipah yang direkat dengan sukrosa/asam sitrat (100/0, 87,5/12,5 dan 75/25). Papan partikel yang dibuat berukuran 25 cm × 25 cm × 1 cm, target kerapatan 0,8 g/cm3. Variabel perekatan antara lain jumlah perekat 20%, waktu kempa 10 menit, suhu kempa 180°C dan tekanan spesifik 3,6 MPa. Sifat fisika dan mekanika papan partikel diuji berdasarkan standar JIS A 5908:2003, kekasaran permukaan diukur menggunakan metode yang dilakukan oleh Hiziroglu (1996). Hasil penelitian menunjukkan bahwa penambahan asam sitrat terhadap sukrosa berpengaruh positif terhadap sebagian besar sifat papan partikel pelepah nipah. Papan partikel pelepah nipah dengan perekat sukrosa/asam sitrat 87,5/12,5 mampu memberikan hasil terbaik dengan memenuhi standar JIS A 5908:2003. Karakteristik papan partikel tersebut adalah kerapatan 0,89 g/cm3, kadar air 10,21%, pengembangan tebal 2,45%, penyerapan air 23,55%, kekasaran permukaan 5,13 μm, keteguhan rekat internal 0,39 MPa, keteguhan patah 9,80 MPa dan keteguhan elastisitas 3,19 GPa.Kata kunci: papan partikel, pelepah nipah, perekat alami, sukrosa, asam sitrat Quality of the Nipa Frond Particleboard Bonded with Citric acid and SucroseAbstractUtilization of natural binder for non-wood composite is still limited. Sucrose and citric acid are potential natural binding agents for composite products. Nipa (Nypa fruticans Wurmb.) was non-wood materials which are potentially to be used as an alternative raw material for particleboards. This study aimed to determine the quality of the nipa frond particleboard bonded with sucrose/citric acid (100/0, 87.5/12.5 and 75/25). Particleboards were manufactured in 25 cm × 25 cm × 1 cm dimension, the target of density 0.8 g/cm3. The variables included resin content of 20%, press time of 10 m, pressing temperature of 180°C and specific pressure of 3.6 MPa. The physics and mechanics properties of particleboard were tested in accordance to standard JIS A 5908:2003 and surface roughness was measured by following the method performed by Hiziroglu (1996). The results showed that the addition of citric acid to sucrose give a positive effect on most of the properties of the nipa frond particleboards. The particleboard bonded with sucrose/citric acid 87.5/12.5 was able to provide the best results to meet the standards of JIS A 5908: 2003. Characteristics of the particleboard was a density of 0.89 g/cm, moisture content of 10.21%, thickness swelling of 2.45%, water absorption of 23.55%, surface roughness of 5.13 ìm, internal bonding of 0.39 MPa, modulus of rupture of 9.80 MPa and modulus of elasticity of 3.19 GPa.

Sifat Papan Partikel Bambu Petung (Dendrocalamus asper) dan Bambu Wulung (Gigantochloa atroviolacea) dengan Perlakuan Ekstraksi Ragil Widyorini; Ikhwan Syahri; Greitta Kusuma Dewi
Jurnal Ilmu Kehutanan Vol 14, No 1 (2020)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Bambu memiliki kandungan ekstraktif dengan persentase yang berbeda antar jenis bambu. Penelitian ini bertujuan untuk mengetahui pengaruh perlakuan ekstraksi pada jenis bambu yang berbeda terhadap sifat papan partikel. Dua jenis bambu digunakan yaitu Bambu Petung (Dendrocalamus asper) dan Bambu Wulung (Gigantochloa atroviolacea). Perlakuan ekstraksi digunakan pada partikel bambu sebelum proses pembuatan papan partikel yaitu tanpa ekstraksi, ekstraksi air dingin dan ekstraksi air panas. Papan partikel dibuat dalam ukuran 25 cm x 25 cm x 0,7 cm, target kerapatan 0,9 g/cm3, jumlah asam sitrat 30%, serta kondisi pengempaan suhu 180°C selama 10 menit. Hasil penelitian menunjukkan bahwa interaksi perlakuan ekstraksi dan jenis bambu hanya berpengaruh signifikan pada sifat penyerapan air dan keteguhan rekat internal, sedangkan jenis bambu berpengaruh signifikan pada nilai kadar air, modulus patah dan modulus elastisitas. Semua papan partikel yang dihasilkan memenuhi standar Japanese Industrial Standard (JIS) A 5908 tipe 13. Pada penelitian ini, papan partikel dari bambu wulung tanpa perlakuan ekstraksi mempunyai nilai yang memenuhi standar tipe 18 dan berpotensi sebagai bahan baku untuk produk furnitur eksterior. Perlakuan ekstraksi dapat meningkatkan secara signifikan nilai keteguhan rekat internal papan partikel bambu petung, walaupun secara umum dengan jumlah asam sitrat 30% perlakuan tersebut tidak diperlukan pada papan partikel bambu Properties of Particleboard made from Petung Bamboo (Dendrocalamus asper) and Wulung Bamboo (Gigantochloa atroviolacea) Particles with Extraction TreatmentAbstractBamboo has extractives, which the percentage of extractive was different based on bamboo species. This research aimed to investigate the effect of extraction treatment at different bamboo species on the particleboard properties. Two types of bamboo were used, i.e. Petung bamboo (Dendrocalamus asper) and Wulung bamboo (Gigantochloa atroviolacea). Three extraction treatments were conducted to the bamboo particles before the particleboard manufacture, i.e. unextracted, cold-water extraction, and hot-waterextraction. The particleboard was made in the size of 25 cm x 25 cm x 0.7 cm, target density of 0.9 g/cm³, citric acid content of 30%, and pressing temperature of 180°C for 10 min. The results showed that the interaction between extraction treatment and bamboo species significantly affected on the water absorption and internal bond strength, however bamboo species affected significantly on the moisture content, modulus of rupture, and modulus of elasticity. All of particleboards could met the requirement of the 13 type of Japanese Industrial Standard (JIS) A 5908. In this research, particleboards made from wulung bamboo particles without extraction treatment have properties that met the requirement of the 18 type and the products have potential to be as exterior materials for furniture. In general, an extraction treatment was not an important step on the manufacturing of bamboo particleboard using citric acid 30% as adhesive. However, the extraction treatment could increase significantly the internal bond strength of particleboard made from petung bamboo.

Physical and Mechanical Properties of Particleboard from Petung Bamboo-waste using Eco-friendly Chitosan-starch Adhesive Dwiyanna, Riska; Widyorini, Ragil; Dewi, Greitta Kusuma
Wood Research Journal Vol 14, No 1 (2023): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2023.14.1.34-40

The effect of starch addition in chitosan adhesive on the physical and mechanical properties of petung bamboo particleboard from bamboo-sawing waste was investigated in this work. The utilization of bamboo-sawing waste particles as a raw material for particle board manufacturing has been gaining attention due to its waste reduction potential and economic advantages. The results of this study indicated that starch has been proven to enhance the physical and mechanical properties of petung bamboo particleboard. Adding only 4% wt. of chitosan/starch adhesive with a chitosan/starch ratio of 7/3 (w/w) has resulted in an improvement in the physical properties of the particleboard, such as moisture content, thickness swelling, and water absorption. It has also enhanced the mechanical properties of the particle board, including modulus of elasticity (MOE), modulus of rupture (MOR), and internal bonding (IB), in comparison to chitosan adhesive without starch addition. Overall, these findings provide insights for further developing chitosan/starch adhesive, especially to produce natural-based adhesives with good bonding quality.

Co-Authors Agus Ngadianto Agus Wahyudi Agus Wahyudi Aini, Erlina Nurul Annisa Primaningtyas Ari Puspa Yudha Ari Puspa Yudha Ari Puspa Yudha Ari Puspa Yudha Bangun Dwi Prasetyo Bhaktiar Adi Setiawan Budi Hari Wicaksono Dewi Susanti Dewi, Greitta Kusuma Dwiyanna, Riska Erny Poedjirahajoe Ganis Lukmandaru Ganis Lukmandaru Ganis Lukmandaru Ganis Lukmandaru Ganis Lukmandaru Ganis Lukmandaru Ganis Lukmandaru Greitta Kusuma Dewi Gunawan Refiadi Harry Praptoyo Ikhwan Syahri J.P. Gentur Sutapa J.P. Gentur Sutapa Jihad, Aqmal Nur Joko Sulistyo Joko Sulistyo Kasmudjo Kasmudjo Kasmudjo, Kasmudjo Kenji Umemura Khusnul Khotimah Mahdi Santoso Muhammad Navis Rofii Muji Setiyo Nasmi Herlina Sari Ni Putu Diana Mahayani Oka Karyanto Pradana A. Nugraha Rini Pujiarti Rini Pujiarti Shuichi Kawai Shuichi Kawai Sigit Sunarta Sigit Sunarta, Sigit Sri Nugroho Marsoem T A Prayitno T.A. Prayitno Tibertius Agus Prayitno Tibertius Agus Prayitno Tibertius Agus Prayitno Tibertius Agus Prayitno Tibertus Agus Prayitno Tibertus Agus Prayitno Tomy Listyanto Widyatno Widyatno Yuditya Adifandi

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