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KUALITAS DAYA LEKAT, NILAI KILAP, FLEKSIBILITAS DAN KEKERASAN BEBERAPA JENIS BAHAN FINISHING YANG DIAPLIKASIKAN PADA KAYU MAHONI WIJAYANTO, Arip
JURNAL KEHUTANAN PAPUASIA Vol. 9 No. 2 (2023): Jurnal Kehutanan Papuasia
Publisher : Fakultas Kehutanan UNIPA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46703/jurnalpapuasia.Vol9.Iss2.459

Kayu mahoni banyak digunakan sebagai bahan furnitur. Jenis bahan finishing yang digunakan berpengaruh terhadap kualitas akhir finishing yang dihasilkan. Tujuan dilakukannya penelitian ini yaitu untuk mengetahui karakter lapisan finishing water based dan solvent based (Poliuretan/ PU dan Nitroselulosa/ NC) yang diaplikasikan pada kayu mahoni. Kayu mahoni disiapkan permukaannya kemudian diberi perlakuan bahan finishing. Pengujian yang dilakukan adalah daya lekat (cross cut), nilai kilap (glossy test), fleksibilitas (coin test), dan kekerasan (pencil hardness). Hasil pengujian daya lekat menunjukkan bahwa finishing WB dan PU termasuk kelas 5 (kualitas tertinggi) sedangkan lapisan finishing NC kelas 3. Lapisan finishing PU juga memiliki nilai kilap kelas high gloss, sedangkan lapisan finishing NC dan WB termasuk gloss dan semi gloss. Ditinjau dari pengujian fleksibilitas maka lapisan finishing WB, NC dan PU termasuk kelas 5 (sangat baik). Lapisan finishing yang memiliki nilai kekerasan tertinggi sampai terendah yaitu PU (6H), NC (5H), dan WB (H). Berdasarkan hasil pengujian, Lapisn finishing PU memiliki kualitas paling bagus digunakan pada kayu mahoni.

PENGARUH PROSES BLEACHING TERHADAP SIFAT FISIS DAN MEKANIS KAYU PINUS (Pinus sp.) TERSERANG BLUE STAIN Wijayanto, Arip; Muhamad, Soleh; Nurhanifah, Nurhanifah; Anggiriani, Siska
Tengkawang : Jurnal Ilmu Kehutanan Vol 14, No 1 (2024): TENGKAWANG : JURNAL ILMU KEHUTANAN
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jt.v14i1.73414

The weakness of pine wood as a furniture material is that it is easily attacked by blue stain which causes changes in the color of the wood. In previous research, it was reported that bleaching material i.e. sodium hypochlorite 25% had a significant effect on the color change of pine wood affected by blue stain, but the effect on its physical and mechanical properties was not yet known. The aim of this research was to determine the effect of bleaching materials on the physical and mechanical properties of pine wood attacked by blue stain. Bleaching treatment was carried out at three different concentrations, namely a mixture of bleaching material and water 1:1, 1:2, and 2:1. Then the pine woods that has been treated with bleaching were tested for moisture content, density, modulus of elasticity (MOE) and modulus of rupture (MOR)) referring to the BS 372-1957 standard. The test results showed that the bleaching treatment had a significant effect on moisture content, MOE, and MOR, but did not affect density. The moisture content of pine woods attacked by blue stains that were treated with bleaching tended to be higher than the control. Meanwhile, the lowest MOE and MOR values were found in pine wood that was treated with bleaching 2:1.Keywords: bleaching, blue stain, mechanical, pine, physical.AbstrakKelemahan dari kayu pinus sebagai bahan furnitur yaitu mudah terserang blue stain yang menyebabkan terjadinya perubahan warna kayu. Pada penelitian sebelumnya telah dilaporkan bahwa bahan bleaching sodium hipoklorit 25% berpengaruh signifikan terhadap perubahan warna kayu pinus terserang blue stain, namun belum diketahui pengaruh terhadap sifat fisis dan mekanisnya. Penelitian ini bertujuan untuk mengetahui sifat fisis dan mekanis kayu pinus terserang blue stain yang diberi perlakuan bleaching. Perlakuan bleaching pada kayu pinus terserang blue stain dilakukan pada tiga konsentrasi berbeda yaitu campuran bahan bleaching dan air 1:1, 1:2, dan 2:1. Kemudian kayu pinus yang telah diberi perlakuan bleaching diuji kadar air, kerapatan, modulus of elasticity (MOE) dan modulus of rupture (MOR)) mengacu pada standar BS 372-1957. Hasil pengujian menunjukkan bahwa perlakuan bleaching berpengaruh signifikan terhadap kadar air, MOE, dan MOR, namun tidak beroengaruh terhadap kerapatan. Kayu pinus terserang blue stain yang diberi perlakuan bleaching memiliki kadar air yang lebih tinggi dibanding kontrol. Sedangkan nilai MOE dan MOR yang paling rendah ditemukan pada kayu pinus yang diberi perlakuan bleaching 2:1. Kata kunci: bleaching, blue stain, fisis, mekanis, pinus.

THE INFLUENCE OF CLASSIC AND MODERN TYPES OF JOINT CONSTRUCTION ON THE STRENGTH OF WOOD-BASED PRODUCT Purwanto, Agung Ari; Rahmat, Bahtiar; Widiyanto, Wahyu; Wijayanto, Arip; Muhamad, Soleh; Mulyosari, Desy; Nurmadina, Nurmadina
Tengkawang : Jurnal Ilmu Kehutanan Vol 14, No 1 (2024): TENGKAWANG : JURNAL ILMU KEHUTANAN
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jt.v14i1.75399

In furniture products, joints represented susceptible areas where damage or structural issues might arise. Consequently, selecting the appropriate joint technique was crucial to reduce the likelihood of failures in furniture joint connections. The objective of this study was to furnish insights into the failure patterns under diagonal compression loads for various wood joints (both traditional and contemporary) constructed with a Medium-Density Fiberboard (MDF). The chosen joint techniques included Dowel (D), tongue and groove (T), Minifix (M), and Insert nut (N). Two compression test scenarios were implemented to evaluate the performance of each joint under external loads. The findings revealed that the Insert nut (N) joint emerged as the most preferable method, demonstrating resilience against the highest external loads and ease of installation, particularly suitable for knock-down furniture items. Conversely, the minifix joint (M) is not recommended due to its intricate construction process, and the compression test results indicated that it exhibited the lowest resistance to external loads.Keywords: Furniture, knock-down, properties, compression test.AbstrakDalam produk furnitur, sambungan merupakan area yang rentan terhadap kerusakan atau masalah struktural yang mungkin timbul. Oleh karena itu, pemilihan teknik sambungan yang tepat sangat penting untuk mengurangi kemungkinan kegagalan dalam sambungan furnitur. Tujuan dari penelitian ini adalah untuk memberikan wawasan tentang pola kegagalan di bawah beban kompresi diagonal untuk berbagai jenis sambungan kayu (baik yang tradisional maupun kontemporer) yang dibuat dengan Medium-Density Fiberboard (MDF). Teknik sambungan yang dipilih meliputi Dowel (D), tongue and groove (T), Minifix (M), dan Insert nut (N). Dua skenario uji kompresi diterapkan untuk mengevaluasi kinerja setiap sambungan di bawah beban eksternal. Temuan menunjukkan bahwa sambungan Insert nut (N) muncul sebagai metode yang paling disukai, menunjukkan ketahanan terhadap beban eksternal tertinggi dan kemudahan pemasangan, khususnya cocok untuk furnitur yang dapat dirakit. Sebaliknya, sambungan minifix (M) tidak disarankan karena proses konstruksi yang rumit, dan hasil uji kompresi menunjukkan bahwa sambungan ini menunjukkan resistensi terendah terhadap beban eksternal.Kata kunci: Furnitur, knock-down, properti, uji tekan.

PENERAPAN METODE BENT LAMINATION PADA PROSES PELENGKUNGAN KOMPONEN KURSI Wijayanto, Arip; Mulyana, Elda
Tengkawang : Jurnal Ilmu Kehutanan Vol 14, No 2 (2024): TENGKAWANG : JURNAL ILMU KEHUTANAN
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jt.v14i2.78908

Currently, furniture products use wooden components in a curved shape to highlight their aesthetic value. However, the components in the curved form are still mostly done in the conventional way. The aim of this study is to apply the bent lamination method to the components of the back legs and the backrest of the chair product. The stages of work started with making a chair design that has a curved shape on the back legs and backrest. Next was the preparation of laminate from teak wood with a thickness of 3 mm each as many as 14 for the back legs and 10 for the backrest. The lamination process was carried out with a polyurethane adhesive and pressing for 3 hours on a bending mal. After the bending process, observations of changes in the shape of each component were carried out. The application of the bent lamination method produces a curved back legs component with a radius of 100 mm, 250 mm, and 290 mm, a thickness of 40 mm and a width of 30 mm, and a curved backrest component with a radius of 205 mm, a thickness of 30 mm and a width of 40 mm. The results of observations of changes in shape were not found after the bending process.Keywords: bent lamination, chair, furniture, teakAbstrakSaat ini banyak produk furnitur menggunakan komponen kayu dalam bentuk lengkung untuk menonjolkan nilai estetikanya. Namun hingga saat ini komponen dalam bentuk lengkung tersebut masih banyak dilakukan dengan cara konvensional. Tujuan dari penelitian ini yaitu untuk menerapkan metode bent lamination pada komponen kaki belakang dan sandaran punggung produk kursi. Tahapan pengerjaan dimulai dari pembuatan desain kursi yang memiliki bentuk lengkung pada kaki belakang dan sandaran punggung. Selanjutnya yaitu penyiapan lamina dari kayu jati dengan tebal 3 mm masing-masing sebanyak 14 untuk komponen kaki belakang dan 10 untuk sandaran punggung. Proses laminasi dilakukan dengan perekat jenis poliuretan dan pengempaan selama 3 jam pada mal pelengkung. Setelah proses pelengkungan dilakukan pengamatan perubahan bentuk pada masing-masing komponen. Penerapan metode bent lamination menghasilkan komponen kaki belakang bentuk lengkung dengan radius 100 mm, 250 mm, dan 290 mm, tebal 40 mm serta lebar 30 mm serta komponen sandaran bentuk lengkung dengan radius 205 mm, tebal 30 mm dan lebar 40 mm. Hasil pengamatan perubahan bentuk tidak ditemukan setelah proses pelengkungan.Kata kunci: bent lamination; furniture, jati, kursi

PROSES BLEACHING: IMPLIKASINYA PADA PERUBAHAN WARNA DAN SIFAT FISIS KAYU KARET (Hevea Brasiliensis) TERKENA BLUE STAIN Nurhanifah, Nurhanifah; Anggiriani, Siska; Muhamad, Soleh; Wijayanto, Arip; Mulyosari, Desy; Fitrianto, Taufik Ramadhan; Widiyanto, Wahyu
Tengkawang : Jurnal Ilmu Kehutanan Vol 14, No 2 (2024): TENGKAWANG : JURNAL ILMU KEHUTANAN
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jt.v14i2.79136

Blue stain can cause discoloration of wood. This causes the selling price of wood affected by blue stain to decrease in the market, especially if it is used as raw material for furniture. One type of wood that is commonly used to make furniture but is easily affected by blue stain is rubber wood. Effort that can be made to overcome this problem are by bleaching the wood attacked by blue stain. Previous research has been carried out on pine wood with various bleaching compositions. The best results in terms of physical properties and color change were obtained in 25% sodium hypochlorite treatment with a water ratio of 1:2. Therefore, it is necessary to conduct similar studies to analyze the effect of the bleaching process using 25% sodium hypochlorite on the discoloration and physical properties of rubber wood. In this research, rubber wood was treated with bleaching with a composition of 25% sodium hypochlorite:water 1:2. The results obtained showed that the wood after the bleaching process experienced an increase in brightness and a color difference compared to the control. Apart from that, the moisture content value also increases after the bleaching process.Keywords: bleaching, blue stain, rubber wood, sodium hypochlorite.AbstrakJamur pewarna (blue stain) dapat menyebabkan perubahan warna pada kayu. Hal tersebut mengakibatkan penurunan harga jual kayu yang terserang blue stain, terutama jika digunakan sebagai bahan baku furnitur. Salah satu jenis kayu yang sering dimanfaatkan untuk pembuatan furnitur namun mudah terserang blue stain adalah kayu karet. Upaya yang dapat dilakukan untuk mengatasi masalah tersebut adalah dengan melakukan proses bleaching pada kayu yang terserang blue stain. Penelitian sebelumnya telah dilakukan pada kayu pinus dengan berbagai komposisi bahan bleaching, dan hasil terbaik dari segi sifat fisik dan perubahan warna diperoleh pada perlakuan sodium hipoklorit 25% dengan perbandingan air 1:2. Oleh karena itu, perlu dilakukan penelitian serupa untuk menganalisis pengaruh proses bleaching menggunakan sodium hipoklorit 25% terhadap perubahan warna dan sifat fisis kayu karet. Hasil yang diperoleh menunjukkan bahwa kayu karet setelah proses bleaching mengalami peningkatan kecerahan dan perbedaan warna dibandingkan kontrol. Selain itu, nilai kadar air juga meningkat setelah proses bleaching.Kata kunci: pemutihan, jamur pewarna, kayu karet, sodium hipoklorit.

Pengaruh Kadar Air dan Ketebalan Papan Terhadap Laju Pengeringan Kayu Karet (Hevea brasiliensis) dengan Penerapan Fase Pendinginan : The Effect of Water Content and Thickness of Rubber Wood (Hevea brasiliensis) Board on The Drying Rate with the Application of the Cooling Phase Wijayanto, Arip
Jurnal Silva Tropika Vol. 8 No. 2 (2024): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v8i2.35227

ABSTRACT Rubber wood is one of the wood species used as furniture raw material. Before processing it into furniture, it needs to be dried first until the moisture content meets the SNI requirements. In this study, drying data for rubber wood with different initial moisture content at several different thicknesses were taken from a furniture company in Central Java and then analyzed descriptively using Microsoft Excel. In the drying process, the company applies a cooling phase in between the heating phases. The results of the data analysis show that drying wood with a thickness of 30 mm takes longer than that with a thickness of 25 mm. On the other hand, in the same initial moisture content range, rubber wood with a thickness of 30 mm has a drying rate that is smaller than the drying rate for wood with a thickness of 25 mm. In the higher moisture content ranges the wood drying rate is greater than rubber wood with a low initial moisture content. Keywords: cooling phase, drying, moisture content, rubber wood, thickness ABSTRAK Salah satu jenis kayu yang digunakan sebagai bahan baku furnitur adalah kayu karet. Sebelum diolah menjadi furnitur kayu karet perlu dikeringkan terlebih dahulu sampai kadar airnya memenuhi persyaratan SNI tentang kayu untuk furnitur. Penelitian ini data pengeringan kayu karet dengan kadar air awal berbeda pada beberapa jenis ketebalan berbeda diambil dari perusahaan furnitur di Jawa Tengah dan kemudian diolah secara deskriptif menggunakan microsoft excel. Proses pengeringan di perusahaan tersebut menerapkan fase pendinginan di sela-sela fase pemanasan. Hasil pengolahan data menunjukkan bahwa pengeringan kayu ketebalan 30 mm membutuhkan waktu yang lebih lama dibandingkan ketebalan 25 mm. Sebaliknya, pada rentang kadar air awal yang sama kayu karet dengan ketebalan 30 mm memiliki laju pengeringan yang lebih kecil dibandingkan laju pengeringan kayu ketebalan 25 mm. Rentang kadar air yang lebih tinggi laju pengeringan kayu lebih besar dibandingkan kayu karet dengan kadar air awal yang rendah. Kata kunci: fase pendinginan,kadar air, kayu karet, ketebalan, pengeringan

Pengaruh Steam dan Variasi Lapisan Terhadap Sifat Fisis dan Mekanis Papan Partikel Hibrida Kayu Jabon dan Bambu Betung: Effect of Steam and Layer Variation on The Physical and Mechanical Properties of Jabon Wood and Betung Bamboo Hybrid Particleboard Muhamad, Soleh; Wijayanto, Arip; Nurhanifah, Nurhanifah; Mulyosari, Desy; Anggiriani, Siska
Jurnal Silva Tropika Vol. 9 No. 1 (2025): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v9i1.44191

ABSTRACT This study aims to assess the physical and mechanical properties of hybrid particleboard fabricated from jabon wood (Anthocephalus cadamba) and betung bamboo (Dendrocalamus asper) with the application of steam treatment and variations in the arrangement of particleboard layers. The steam conditioning was executed via autoclaving at a temperature of 126 ºC for a duration of 60 minutes under a pressure of 0.14 MPa to improve particle quality prior to the board manufacturing process. The particleboards were architected following a face/core/back schema with three layered variations, namely jabon particleboard, hybrid jabon/bamboo/jabon, and bamboo/jabon/bamboo. The adhesive agent utilized was urea-formaldehyde (UF), applied at a proportion of 10% relative to the oven-dry weight of the particles. The dimensional specifications of the particleboards were fixed at 30 × 30 × 0.9 cm³, targeting a density of 0.6 g/cm³. The appraisal of the physical and mechanical properties was conducted in strict adherence to JIS A 5908-2003, encompassing density, moisture content, water absorption, thickness swelling, modulus of rupture and modulus of elasticity. The empirical outcomes intimate that the hybrid particleboard with a bamboo/jabon/bamboo subjected to steam treatment manifested superlative performance, substantially augmenting the physical and mechanical properties made from jabon wood and betung bamboo. Keywords: betung bamboo, hybrid, jabon wood, particleboard, steam. ABSTRAK Penelitian ini memiliki tujuan untuk mengkaji sifat fisis dan mekanis papan partikel hibrida yang terbuat dari kayu jabon (Anthocephalus cadamba) dan bambu betung (Dendrocalamus asper) dengan penerapan perlakuan steam serta variasi susunan lapisan papan partikel. Perlakuan steam dilakukan menggunakan autoklaf dengan suhu 126 ºC dengan lama 60 menit dengan tekanan 0,14 MPa untuk meningkatkan kualitas partikel sebelum proses pembuatan papan. Papan partikel disusun dengan pola face/core/back dalam tiga variasi lapisan, yaitu papan partikel jabon, hibrida jabon/bambu/jabon, dan hibrida bambu/jabon/bambu. Perekat yang digunakan yaitu urea formaldehida (UF) sebanyak 10% dari berat kering partikel. Dimensi papan partikel adalah 30x30x0,9 cm³ dengan target kerapatan 0,6 g/cm³. Evaluasi sifat fisis dan mekanis mengikuti kriteria JIS A 5908-2003, mencakup kerapatan, kadar air, daya serap air, pengembangan tebal, modulus of rupture dan modulus of elasticity. Hasil penelitian mengindikasi bahwasanya papan partikel hibrida dengan susunan bambu/jabon/bambu dan perlakuan steam menghasilkan performa terbaik, serta mampu meningkatkan sifat fisis dan mekanis papan partikel berbahan kayu jabon dan bambu betung. Kata kunci: bambu betung, hibrida, kayu jabon, papan partikel, steam.

The Utilization Rubber Wood Finger Joint Laminated for Furniture Application Nurhanifah; Wijayanto, Arip; Anggiriani, Siska; Muhamad, Soleh; Mulyosari, Desy
Journal of Sylva Indonesiana Vol. 8 No. 2 (2025): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v8i2.18821

Rubber wood (Hevea brasiliensis) was considered a promising alternative material in furniture manufacturing due to its favorable physical and mechanical properties, sufficient availability, and relatively high economic value. However, it lacked natural durability and was vulnerable to insect and fungal attacks, requiring preservative treatment before use. This study aimed to evaluate the performance of Finger Joint Laminated (FJL) products made from preservative-treated rubber wood as a potential raw material for furniture. The research involved wood selection, preservative treatment using deltamethrin and boric acid via the vacuum-pressure method, fabrication of FJL using three adhesive compositions (PVAc, PVAc + 5% hardener, and PVAc + 15% hardener), and testing of physical (moisture content and density) and mechanical (modulus of elasticity and modulus of rupture) properties according to BS 373:1957 standards. The results showed that all FJL variants met the density requirements stated in SNI 01-0608-2017. The FJL bonded with 15% PVAc and hardener achieved the highest density and exhibited superior mechanical strength. Although the addition of hardener increased the moisture content, it remained within the acceptable limit (<15%) as defined in SNI 01-0608-1989. The improvement in mechanical performance was attributed to enhanced cross-linking in the adhesive. Some mechanical failures were likely caused by uneven adhesive application. In conclusion, rubber wood treated with preservatives and processed into FJL with optimal adhesive composition demonstrated strong potential as material for furniture production

Pengaruh Proses Bleaching Terhadap Finishing Kayu Pinus Dan Kayu Karet Terserang Blue Stain: The Effect of Bleaching Process on Finishing of Pine Wood and Rubber Wood Attacked by Blue Stain Mulyosari, Desy; Wijayanto, Arip; Muhamad, Soleh; Nurhanifah, Nurhanifah; Anggiriani, Siska; Fitrianto, Taufik Ramadhan; Widiyanto, Wahyu
Jurnal Silva Tropika Vol. 9 No. 1 (2025): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v9i1.44692

ABSTRACT One of the problems faced by the furniture industry is the attack of coloring fungi or what is commonly called blue stain. The attack of coloring fungi causes color changes so that the appearance of the wood decreases. The bleaching process is one way that can be done to overcome the attack of blue stain. The bleaching process in the industry uses the chemical white agent 250 (WA-250). However, research related to the effect of the bleaching process on the finishing of pine wood and rubber wood attacked by blue stain has not been carried out. This study aims to determine the effect of the bleaching process on the finishing of pine wood and rubber wood attacked by blue stain. Finishing tests include testing the adhesion of the finishing layer (cross cut test) referring to ASTM D 3359, flexibility testing is carried out with a coin test, and hardness testing refers to ASTM D 3363. The results of this study are that the bleaching process does not affect the finishing process on pine wood and rubber wood attacked by blue stain, both those treated with bleaching and those without bleaching treatment, which are included in the same finishing quality category. Based on the adhesion test, it is included in class 4B (Good) and its flexibility gets a value of 5 (very good), while the hardness of the finishing layer is in the less category. Keywords: bleaching, blue stain, finishing, pine wood, rubber wood ABSTRAK Permasalahan yang dihadapi oleh industri furnitur salah satunya adalah serangan jamur pewarna atau yang biasa disebut blue stain. Serangan jamur pewarna tersebut menyebabkan perubahan warna sehingga terjadi penurunan penampilan kayu. Proses bleaching merupakan salah satu cara yang dapat dilakukan untuk mengatasi adanya serangan blue stain. Proses bleaching pada industri menggunakan bahan kimia white agent 250 (WA-250). Namun, penelitian terkait pengaruh proses bleaching pada finishing kayu pinus dan kayu karet terserang blue stain belum dilakukan. Penelitian ini bertujuan mengetahui pengaruh proses bleaching terhadap finishing pada kayu pinus dan kayu karet yang terserang blue stain. Pengujian finishing meliputi pengujian daya lekat lapisan finishing (cross cut test) mengacu pada ASTM D 3359, pengujian fleksilbilitas dilakukan dengan coin test, dan pengujian kekerasan mengacu pada ASTM D 3363. Hasil penelitian ini adalah proses bleaching tidak mempengaruhi proses finishing pada kayu pinus dan kayu karet yang terserang blue stain baik yang diberi perlakuan bleaching maupun tanpa perlakuan bleaching masuk dalam kategori kualitas finishing yang sama. Berdasarkan uji daya lekat termasuk pada kelas 4B (baik) dan fleksibilitasnya memperoleh nilai 5 (sangat bagus), sedangkan kekerasan lapisan finishingnya kategori kurang. Kata kunci: bleaching, blue stain, finishing, kayu karet, kayu pinus

Pengaruh Bleaching Terhadap Sifat Fisis Dan Perubahan Warna Kayu Pinus (Pinus merkusii Jungh et de Vriese) Terserang Blue Stain: The Effect of Bleaching on Physical Properties and Color Change of Blue Stain-Infected Pine Wood Anggiriani, Siska; Wijayanto, Arip; Nurhanifah, Nurhanifah; Muhamad, Soleh; Mulyosari, Desy; Widiyanto, Wahyu; Fitrianto, Taufik Ramadhan
Jurnal Silva Tropika Vol. 9 No. 1 (2025): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v9i1.44803

ABSTRACT Pine is one of wood species that widely used as raw material for furniture making. Pine is easy to obtain, easy to work with, and has distinctive colors and patterns. However, pine is susceptible to being attacked by contaminating fungi (blue stain) on its surface. Blue stain attack wood surface is a problem that must be solved due to its effect on wood appearance. The idea to restrain this problem is bleaching process. Bleaching process carried out in this study used 25% sodium hypochlorite which was dissolved in water in a ratio of 1:2 (w/w). The bleaching process carried out has a significant effect on moisture content (MC) of pine wood, but does not have a significant effect on its density. The MC value of pine wood after bleaching tends to increase compared to the untreated wood. The color change of pine wood after bleaching is indicated by the ΔE value (3.0 < ΔE < 6.0) which is classified as a moderate effect. The color of the control pine wood was originally slightly desaturated orange and after bleaching it became slightly desaturated orange Keywords: bleaching, color change, finishing, furniture, pine. ABSTRAK Pinus merupakan salah satu jenis kayu yang banyak digunakan sebagai bahan baku pembuatan furnitur. Hal ini karena Pinus mudah mudah didapatkan, mudah dikerjakan, dan memiliki warna dan corak yang khas. Namun, Pinus rentan terserang jamur pengotor (blue stain) pada permukaannya. Serangan blue stain pada permukaan kayu merupakan permasalahan yang harus diatasi karena adanya seranagn blue stain dapat mempengaruhi penampilan kayu. Salah satu cara yang dapat dilakukan untuk mengatasi permasalahan tersebut adalah melakukan proses bleaching. Proses bleaching yang dilakukan pada penelitian ini menggunakan sodium hipoklorit 25% yang dilarutkan menggunakan air dengan perbandingan 1:2 (b/b). Proses bleaching yang dilakukan berpengaruh nyata terhadap kadar air (KA) kayu pinus, namun tidak berpengaruh nyata terhadap kerapatannya. Nilai KA kayu pinus setelah bleaching cenderung meningkat dibanding kontrolnya. Perubahan warna kayu Pinus setelah bleaching ditunjukkan dengan nilai ΔE (3,0 < ΔE < 6,0) yang tergolong pengaruhnya sedang. Warna pada kayu pinus control semula berwarna slightly desaturated orange dan setelah bleaching menjadi slightly desaturated orange. Kata kunci: bleaching, finishing, furnitur, perubahan warna, pinus.

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