29 アカマツ材のパルプに関する研究 : IX. アテの化学的組成並びにそのパルプについて

概要

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The chemical composition and pulps of compression wood were compared with those of normal wood.Main results are as follows.1. The compression wood, as compared with normal one, showed higher percentage of lignin, pentosan, ash, water extracts, cold and hot, 1% NaOH soluble substance, while it showed smaller content of crude cellulose, α-cellulose in crude cellulose.Especially, the difference between both woods is remarkably large with regard to lignin and cellulose.2. Methoxyl group content of the lignin from compression wood is smaller than that from normal one.3. The sulphate pulp and soda pulp of the compression wood are more impure, and the percentages of these pulp yields are lower than those of the normal wood pulps.4. Sulpite pulping of compression wood is considerably difficult.5. Compression wood pulps are weaker in the strength of tensile, breaking, and in particular tearing than normal wood pulps.
一般社団法人日本森林学会の論文
1951-04-25