Abstract: The objective
of this research
is to determine
strength rate of
Damar Batu/Balau (Shorea spp.), Kempas (Kompassia
malaccensis), and Durian (Durio spp.) before and after extraction. For this
purpose, three solvents were used in sequence to extract the wood which are
acetone pentane, and mixture
of hexane, acetone,
and water (HAW)
with volume ratio
55:44:2. Studies on the wood comprises of tensile, bending, and impact
test. The tests are conducted based
on method of
ASTM D 3500
– 90, ASTM
D 3043 –
95, and ASTM
D 1e43 –
94 for tensile, bending, and
impact test, respectively. The result showed that Damar Batu/Balau has higher strength
compared to Kempas
and Durian Woods.
All the wood
samples after extraction show a
slight decreasing in tensile strength, tensile extension, and flexural stress, whereby
modulus tensile, modulus flexural, and impact strength increases.
Keywords: bending, extraction,
impact, tensile
Penulis: Iskandar
Kode Jurnal: jpkimiadd090022
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