Characterization of three wood species (Oak, Teak and Chanul) before and after heat treatment

Uribe, Braian Esneider Buitrago; Ayala, Orlando

doi:10.1007/s13196-015-0144-4

Cited by 18 publications

(18 citation statements)

References 16 publications

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“…This lack of difference can be explained as indicated by Uribe and Ayala (2015), who mention that although there is variation by weight loss and decrease in the volume of the samples after applying the thermal treatment process, is not significant enough to cause a noticeable change between the different treatments. Besides, before 170 °C most components are eliminated (KOCAEFE et al, 2008), temperature that reaches biomass in any of the different thermal-treatment temperatures.…”

Section: Density and Shrinking Of The Woodmentioning

confidence: 99%

Effects on density, shrinking, color changing and chemical surface analysis through FTIR of Tectona grandis thermo-treated

Méndez-Mejías¹,

Moya²

2016

Sci. For.

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Section: Density and Shrinking Of The Woodmentioning

confidence: 99%

Effects on density, shrinking, color changing and chemical surface analysis through FTIR of Tectona grandis thermo-treated

Méndez-Mejías¹,

Moya²

2016

Sci. For.

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“…Some studies have explained behaviour, processes, and characteristics of heated teak. Uribe and Ayala (2015) investigate the influence of heat treatment on dimensional stability of teak. The samples treated at increasing temperature 130 to 210 °C reduce their volumetric swelling after 24 h of water immersion (1 to 0,2%).…”

Section: Introductionmentioning

confidence: 99%

Characterization of thermally modified short and long rotation teaks and the effects on coatings performance

Pratiwi

Darmawan

Priadi

et al. 2019

Maderas, Cienc. tecnol.

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Many wood processing industries use short rotation teak, which has lower quality especially in durability and dimensional stability. Heat treatment is an eco-friendly method to improve dimensional stability and durability of wood. The objectives of the study were to investigate the effects of thermal modification on chemical composition, colour, dimensional stability and durability as well as coating's performance after accelerated weathering of short and long rotation teak for exterior utilization. In this study, the samples were heated in oven at 220 °C for 20 h under nitrogen atmosphere. Results showed that independently of growth conditions teak woods underwent hemicelluloses degradation and an increase of lignin content after heat treatment. Extractives contents were lower in short rotation than in long rotation teak, and decreased in all cases after heat treatments. Dimensional stability was considerably improved as indicated by anti-swelling efficiency values of 64,9% and 58,9% for short and long rotation teak, respectively. Heated teak woods were more resistant against Trametes versicolor and the durability of short-rotation teak increased from moderate to very durable. Coatings on heat treated teaks had better bonding quality and better photo-stability when compared to unheated. Heated short rotation teak could be considered for exterior application.

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“…Ates et al (2009) menyebutkan bahwa perlakuan panas pada kayu dianggap sebagai teknik ramah lingkungan karena tidak ada bahan kimia yang terlibat selama proses berlangsung. Secara umum, perlakuan panas dapat menurunkan kadar air setimbang (KAS), mengurangi emisi dari volatile organic compounds (VOC), meningkatkan stabilitas dimensi, ketahanan terhadap jamur, dan membuat warna kayu menjadi lebih gelap (Widmann et al, 2012;Srinivas & Pandey, 2012;Kaciková et al, 2013;Uribe & Ayala, 2015). Perlakuan panas juga dapat menyeragamkan warna (homogen) kayu dan membuatnya menjadi lebih gelap (Zanuncio et al, 2014).…”

Section: Pendahuluanunclassified

“…Meskipun kaku dan keras, namun lignin bersifat termoplastik yang akan menjadi lunak pada suhu tinggi dan menjadi keras kembali pada suhu rendah. Suhu sampai 150°C diduga belum mampu mendegradasikan lignin seperti halnya pada kayu jati (Uribe & Ayala, 2015).…”

Section: A Komponen Dinding Sel Kayuunclassified

Chemical properties of modified mahogany wood by heat treatment

Lukmandaru¹,

Susanti²,

Widyorini³

2018

JPKW

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Kayu mahoni hutan rakyat umumnya mempunyai kualitas relatif rendah karena kurangnya tindakan pemeliharaan dan pemanenan usia muda. Perlakuan panas dikenal sebagai metode modifikasi kayu yang dapat meningkatkan kualitas kayu. Tujuan penelitian ini adalah mengetahui pengaruh interaksi suhu dan metode perlakuan panas terhadap sifat kimia kayu mahoni muda. Bahan baku penelitian ini adalah papan kayu mahoni yang berasal dari hutan rakyat yang telah mengalami perlakuan panas dengan metode oven dan uap air panas (steaming) pada variasi suhu 90°C, 120°C, dan 150°C selama 2 jam waktu efektif. Perubahan sifat kimia setelah perlakuan kemudian dianalisis. Hasil penelitian menunjukan bahwa interaksi suhu dan metode perlakuan panas memberikan penurunan yang nyata terhadap kadar pentosan dan kadar ekstraktif larut air panas, khususnya untuk metode steaming pada suhu 150°C. Kadar holoselulosa, α-selulosa, hemiselulosa dan nilai pH menurun seiring dengan naiknya suhu perlakuan panas sedangkan kadar lignin, ekstraktif (larut air dingin dan alkohol-benzena) dan kelarutan dalam NaOH 1% meningkat. Metode steaming menghasilkan nilai kadar holoselulosa, ekstraktif etanol-benzena, kelarutan dalam air dingin, dan nilai pH yang lebih rendah dibandingkan dengan metode oven. Meski demikian, metode steaming di atas 120 0 C perlu dipertimbangkan kaitannya dengan penurunan sifat kekuatan kayu.

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Characterization of three wood species (Oak, Teak and Chanul) before and after heat treatment

Cited by 18 publications

References 16 publications

Effects on density, shrinking, color changing and chemical surface analysis through FTIR of Tectona grandis thermo-treated

Effects on density, shrinking, color changing and chemical surface analysis through FTIR of Tectona grandis thermo-treated

Characterization of thermally modified short and long rotation teaks and the effects on coatings performance

Chemical properties of modified mahogany wood by heat treatment

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