1996 Fiscal Year Final Research Report Summary
Preparation of Wood Adhesives from Waste Woody Material as Chemical Source
| Project/Area Number |
07660208
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
林産学
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| Research Institution | The University of Tokyo |
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Principal Investigator |
ONO Hirokuni The university of Tokyo, Graduate School of Agr. & Life Sci., Associate Professor, 大学院・農学生命科学研究科, 助教授 (30261960)
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| Co-Investigator(Kenkyū-buntansha) |
MIZUMACHI Hiroshi The university of Tokyo, Graduate School of Age. & Life Sci., Professor, 大学院・農学生命科学研究科, 教授 (40022165)
KAJIYAMA Mikio The university of Tokyo, Graduate School of Agr. & Life Sci., Assistant Professo, 大学院・農学生命科学研究科, 助手 (40191978)
TAKEMURA Akio The university of Tokyo, Graduate School of Agr. & Life Sci., Assistant Professo, 大学院・農学生命科学研究科, 助手 (50183455)
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| Project Period (FY) |
1995 – 1996
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| Keywords | Phenol Liquefaction / Adhesives / Thermsetting Resin |
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| Research Abstract |
Recently the direct liquefaction method have been greatly improved through the attempts of reducing reaction temperature and applying no gas pressure in the process. Now liquefied products are easily obtainable by direct liquefactions using some reactive solvents in the presence of acidic catalyst at atmospheric pressure.
The objectives of this research is to convert waste woody materials such as saw dust and bark as a reject from saw milling into resin starting material and to apply it to wood adhesives from the viewpoint of effective utilization of wood.
This paper describes efforts to learn about the characteristics of liquefied product from white birch, lignin, cellulose and bark by using phenol.
The direct liquefaction using phenol provides complete liquefaction products which dissolve in organic solvent such as dioxane, DMSO and DMF.Carbon 13 NMR and GPC methods reveal that cellulosic component in wood loses its pyranose ring structure and finally changes into liquefied product. This suggests that these liquefaction would follow drastic solvolysis reaction, to provide decomposed substance as liquefied product. The product was confirmed to have phenolic moieties.
Wood adhesives were prepared from phenol liquefied white birch, lignin, bark and waste paper. The properties and performance of the adhesives were comparable to those of commercial phenolic adhesives. These findings indicate that phenol liquefied products are promising source of wood adhesives.
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