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Acetylation of wood using supercritical carbon dioxide
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نویسنده
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matsunaga m. ,hewage d.c. ,kataoka y. ,ishikawa a. ,kobayashi m. ,kiguchi m.
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منبع
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journal of tropical forest science - 2016 - دوره : 28 - شماره : 2 - صفحه:132 -138
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چکیده
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This study investigated the effects of acetylation using supercritical carbon dioxide (co2) on dimensional stability of four wood species grown in sri lanka. heartwood specimens of paraserianthes falcata,alstonia macrophylla,pinus caribaea and hevea brasiliensis were acetylated with acetic anhydride using supercritical co2 (120 °c,10-12 mpa),and their dimensional stability was evaluated. results showed that anti-swelling efficiency values of the wood species increased to over 60% after 8 hours of acetylation. in particular,a. macrophylla exhibited a relatively high anti-swelling efficiency. high anti-swelling efficiency of a. macrophylla was caused by the large swelling of this high specifc gravity wood. © forest research institute malaysia.
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کلیدواژه
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Alstonia macrophylla; Anti-swelling efficiency; Bulking; Dimensional stability; Hevea brasiliensis; Paraserianthes falcata; Pinus caribaea; Weight per cent gain
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آدرس
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department of wood improvement,forestry and forest products research institute,1 matsunosato,tsukuba,ibaraki, Japan, central environmental authority,ministry of environmental and renewable energy,104,denzil kobbekaduwa mawatha,battaramulla,sri lanka, Sri Lanka, department of wood improvement,forestry and forest products research institute,1 matsunosato,tsukuba,ibaraki, Japan, department of wood improvement,forestry and forest products research institute,1 matsunosato,tsukuba,ibaraki, Japan, department of wood improvement,forestry and forest products research institute,1 matsunosato,tsukuba,ibaraki, Japan, department of wood improvement,forestry and forest products research institute,1 matsunosato,tsukuba,ibaraki, Japan
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Authors
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