Perubahan Warna Dan Lapisan Finishing Lima Jenis Kayu Akibat Pencuacaan

Krisdianto, Krisdianto; Satiti, Esti Rini; Supriadi, Achmad

doi:10.20886/jphh.2018.36.3.205-218

Cited by 6 publications

(12 citation statements)

References 12 publications

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“…Setelah 3 bulan dilakukan pengujian warna. Parameter yang diuji adalah penurunan berat menggunakan Persamaan 2, total perubahan warna (∆E/dE) menggunakan Persamaan 3 (Krisdianto, Satiti and Supriadi, 2018), serta analisis hasil FT-IR.…”

Section: Uji Cuacaunclassified

“…Parameter lain menguji ketahanan terhadap cuaca adalah perubahan warna. Perubahan warna pada kayu dapat menunjukkan kualitas apabila digunakan untuk pemakaian luar ruangan (Krisdianto et al, 2018). Nilai total perubahan warna yang semakin besar menunjukkan perubahan warna yang semakin jauh.…”

Section: Ketahanan Cuacaunclassified

“…Total perubahan warna memiliki nilai lebih dari 5 menunjukkan bahwa seseorang yang mangamati sampel secara visual dapat memberikan pernyataan bahwa sampel adalah dua warna yang berbeda dari sampel sebelum diuji (Mokrzycki and Tatol, 2011). Selain itu, hasil penelitian mengungkapkan bahwa perubahan warna dengan nilai 0,22-2,91 termasuk ke dalam kategori perubahan warna sedikit hingga sedang (Krisdianto, Satiti and Supriadi, 2018). Hal ini menunjukkan bahwa perubahan warna yang dilakukan dalam penelitian ini termasuk ke dalam perubahan warna yang Gambar 10 menunjukkan bahwa pada formulasi resin-serbuk memiliki kecenderungan memudar dan mendekati abu-abu.…”

Section: Ketahanan Cuacaunclassified

“…Hal ini menunjukkan bahwa perubahan warna yang dilakukan dalam penelitian ini termasuk ke dalam perubahan warna yang Gambar 10 menunjukkan bahwa pada formulasi resin-serbuk memiliki kecenderungan memudar dan mendekati abu-abu. Perubahan warna kayu menjadi abu-abu hingga abu pucat akibat terjadinya pencucian warna dipermukaan kayu (Krisdianto, Satiti and Supriadi, 2018). Proses pencucian warna merupakan efek samping dari proses delignifikasi di permukaan kayu akibat perubahan suhu dan kelembapan serta pencahayaan sinar matahari yang berulang.…”

Section: Ketahanan Cuacaunclassified

“…Hal ini dikarenakan serbuk kayu surian yang memiliki kandungan selulosa, memberi lapisan pada permukaan sampel batang kelapa sawit. Pelepasan kelompok karbonil dari keton, aldehid, dan quinine akibat perubahan lignin dapat menyebabkan perubahan warna dari coklat/kuning menjadi abu-abu selama pengujian ketahanan cuaca (Krisdianto, Satiti and Supriadi, 2018).…”

Section: Ketahanan Cuacaunclassified

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Ketahanan Batang Kelapa Sawit Diimpregnasi Resin Pinus dan Serbuk Kayu Surian Terhadap Rayap dan Cuaca

et al. 2021

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The Resistance of Pine Resin and Surian Wood Sawdust Impregnated Oil Palm Stem Against Termite and WeatheringAbstractImpregnation substances into the oil palm trunks are one way to improve the oil palm trunk quality. This paper studies the optimum formulation of oil palm trunk impregnanted pine resin and Surian sawdust against dry-wood and subterranean termites as well as weathering performance. Impregnant concentration variations were mixtures of Tusam resin and Surian wood sawdust of 0% (RS0), 4% (RS1), 6% (RS2), and 8% (RS3) with three replications. Dry-wood termite test, subterranean termite test, and weather resistance test were carried out for 12 weeks of observation. The results showed that RS3 treatments were the optimum formulation of impregnated material used for oil palm trunk based on its resistance against dry-wood and subterranean termites resistance, while RS0 treatments were the optimum formula for weathering performances.Keywords: impregnation, oil palm trunk, pine resin, sawdust, Surian woodAbstrakSalah satu upaya untuk meningkatkan kualitas batang kelapa sawit adalah melalui impregnasi dengan resin pinus dan serbuk kayu Surian. Penelitian ini bertujuan untuk menentukan formulasi optimum impregnan batang kelapa sawit terhadap serangan rayap kayu kering dan rayap tanah serta ketahanan terhadap cuaca. Variasi konsentrasi impregnan yang digunakan yaitu campuran resin pinus dan serbuk kayu Surian 0% (RS0), 4% (RS1), 6% (RS2), dan 8% (RS3). Uji ketahanan rayap kayu kering, uji rayap tanah, dan uji ketahanan terhadap cuaca dilakukan selama 12 minggu pengamatan. Hasil penelitian menunjukkan bahwa konsentrasi optimum bahan impregnan batang kelapa sawit terimpregnasi terhadap ketahanan rayap kayu kering dan rayap tanah adalah formula RS3, sedangkan formulasi impregnan ketahanan cuaca optimum adalah batang kelapa sawit dengan formula RS0.Kata kunci: impregnasi, batang kelapa sawit, resin pinus, serbuk kayu, kayu Surian

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Section: Uji Cuacaunclassified

Section: Ketahanan Cuacaunclassified

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Ketahanan Batang Kelapa Sawit Diimpregnasi Resin Pinus dan Serbuk Kayu Surian Terhadap Rayap dan Cuaca

et al. 2021

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Analysis of Changes in Vessel Cells of Meranti and Bangkirai Wood Placed Outdoors

Fernandes,

Erwin,

Karyadi

et al. 2024

BIO Web Conf.

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Wood, as a renewable material, can be used for indoor and outdoor products. Meranti and Bangkirai as commercial woods, are used outdoors. The wood used outdoors will experience wood cell damage and discoloration on the surface. The research aims to determine the pattern of damage and discoloration of wood vessel cells in Meranti and Bangkirai wood due to weather exposure for 5 months in Samarinda. The wood cell damage was observed microscopically, and changes in wood vessel cells colour were observed using the CIE lab method on parameters L*, a*, b*, and ΔE. The study’s results showed that after being exposed to the weather for 2 months, the vessel cells of Meranti and Bangkirai wood began to experience degradation. In Meranti wood, the vessel cells were completely degraded and left cracks after 4 months, while in Bangkirai wood, it was 5 months. After being exposed to the weather for 5 months, Meranti wood vessel cells experienced changes in the parameters ΔL -10.65, Δa -14.68, Δb -12.89, and ΔE 22.25. While Bangkirai, ΔL -7.01, Δa -12.84, Δb 15.95 and ΔE 21.64.

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Learning media development of the cheap skin-based model for medical faculty students at Tadulako University

Muhlasin

Handayani

Demak

et al. 2022

RADEN

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A model is a learning media that is used instead of the real human body to increase students' knowledge and can also practice medical skills, which are impossible to apply to real patients. Learning using models is the first order in learning clinical skills before students proceed to the next stage, namely practicing with friends and the last one is going directly to the community. The purpose of this study was to design, create and analyze a skin model made from cheap raw materials like wood so that it can be used as a learning aid at the Faculty of Medicine, Tadulako University. This research applied a qualitative approach with the Research and Development method. The sampling technique as the informant was taken through purposive sampling. The informants consisted of a dermatologist and sex expert, a medical education expert, and a histology lecturer. Data was collected through in-depth interviews and observation. Data analysis was carried out by analyzing the opinions of the informants using questionnaires to help guide the interview. The cheap leather model shows a fairly realistic mannequin shape with colors that can distinguish each layer and can be used as a learning aid for students in the histology department. Learning media development of the cheap leather model shows a fairly realistic mannequin shape with colors that can distinguish each layer and can be used as a learning aid for students in the histology department.

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Perubahan Warna Dan Lapisan Finishing Lima Jenis Kayu Akibat Pencuacaan

Cited by 6 publications

References 12 publications

Ketahanan Batang Kelapa Sawit Diimpregnasi Resin Pinus dan Serbuk Kayu Surian Terhadap Rayap dan Cuaca

Ketahanan Batang Kelapa Sawit Diimpregnasi Resin Pinus dan Serbuk Kayu Surian Terhadap Rayap dan Cuaca

Analysis of Changes in Vessel Cells of Meranti and Bangkirai Wood Placed Outdoors

Learning media development of the cheap skin-based model for medical faculty students at Tadulako University

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