Karakteristik Perubahan Warna dan Kekerasan Kayu Termodifikasi Panas pada Berbagai Suhu dan Jenis Kayu (Color Changes and Hardness Properties of Thermally Modified Wood at Various Temperatures and Wood Species)

Lina Karlinasari, Fengky S Yoresta, Trisna Priadi

Abstract


Thermally modified wood by heat treatment are conducted to improve wood quality through high temperature application dealing with to increase dimensional stability and biological durability. However, this treatment can decrease others properties such as mechanical properties and color changes. The aim of this study was to evaluate the color changes as well as hardness properties which undergone heat treatment. Sengon (Paraserianthes falcataria), jabon (Anthocephalus cadamba), and mangium (Acacia mangium) wood species were heat treated at temperature 120, 150, and 180 °C for duration 2 and 6 h. Pretreatments were carried through natural drying and kiln dryer at low temperature 40 °C. The result showed that the temperature and duration of heat treatment were effected on color changes to become darken mainly in jabon and mangium wood. Heat treatment at three temperature which subjected to the samples was not influenced significantly on hardness properties. Pretreatment maintained the moisture content stability but not influenced on wood properties tested.


Keywords


color change; dimensional stability; heat; temperature; thermally modified wood

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DOI: https://doi.org/10.51850/jitkt.v16i1.443

DOI (PDF): https://doi.org/10.51850/jitkt.v16i1.443.g369

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ISSN: 1693-383              EISSN: 2656-0178