BENDING STRENGTH OF LIGNOCELLULOSIC MATERIALS IN SOFTENING CONDITION

Indonesian Journal of Forestry Research

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Title BENDING STRENGTH OF LIGNOCELLULOSIC MATERIALS IN SOFTENING CONDITION
 
Creator Dwianto, Wahyu
Damayanti, Ratih
Darmawan, Teguh
Sejati, Prabu Satria
Akbar, Fazhar
Adi, Danang Sudarwoko
Bahanawan, Adik
Amin, Yusup
Triwibowo, Dimas
 
Subject bending strength, lignocellulosic materials, softening condition, anatomical structures
 
Description This research aimed to understand the softening behaviour and viscoelastic property of wood, rattan, and bamboo as lignocellulosic materials. Nine years-old fast growing teak wood [Tectona grandis L.f.], rattan [Calamus sp.], and 3 years-old andong bamboo [Gigantochloa pseudoarundinaceae (Steud.) Widjaja] were used for the experiments. The samples were taken from the bottom, middle and upper parts for wood and rattan, and that for bamboo were cut from the 1st to 20th internodes. Static bending tests were carried out in fresh (green) as control samples, air-dried, and softened by microwave heating (MW) for 1 min to determine modulus of rupture (MOR) and modulus of elasticity (MOE). The results showed that the MOR and MOE values of wood, rattan, and bamboo increased from fresh to air-dried condition, and decreased by MW. When compared at the same density, drastic increase was observed for the normalized MOR value in air-dried of rattan, i.e. 2.5 fold. However, the decreasing of all the normalized MOR values were almost the same, i.e. 0.5 fold when they were softened by MW. Remarkably increase was also appeared for the normalized MOE value in air-dried of rattan, i.e. 3.0 fold and decreased to almost zero by MW. These results indicated that rattan was more easily bent, followed by bamboo and then wood. Hydrothermal properties of chemical components significantly affected the changes of strength (MOR) and elastic properties (MOE). However, the differences in bending strength of wood, rattan, and bamboo were more likely due to differences in their anatomical structures.
 
Publisher Secretariat of Forestry Research and Development Agency
 
Contributor Japan Society for the Promotion of Sciences (JSPS)
 
Date 2020-04-30
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion

 
Format application/pdf
 
Identifier http://ejournal.forda-mof.org/ejournal-litbang/index.php/IJFR/article/view/5728
10.20886/ijfr.2020.7.1.59-70
 
Source Indonesian Journal of Forestry Research; Vol 7, No 1 (2020): Indonesian Journal of Forestry Research; 59-70
2406-8195
2355-7079
 
Language eng
 
Relation http://ejournal.forda-mof.org/ejournal-litbang/index.php/IJFR/article/view/5728/4994
http://ejournal.forda-mof.org/ejournal-litbang/index.php/IJFR/article/downloadSuppFile/5728/754
http://ejournal.forda-mof.org/ejournal-litbang/index.php/IJFR/article/downloadSuppFile/5728/755
 
Rights Copyright (c) 2020 Indonesian Journal of Forestry Research
http://creativecommons.org/licenses/by-nc-sa/4.0
 

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