Studies on Dissolving Bamboo Pulp

概要

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(1) Dissolving bamboo pulp can be manufactured by application of the processes of "sulphate pulping subsequent to prehydrolysis". When water cooking is applied for prehydrolysis, cooking conditions of 160℃ 4 hrs. and 165℃ 4 hrs. are favorable to produce the dissolving bamboo pulp. In this case, the sulphate cooking condition is the followings; temperature 160℃, time 2 hrs., total NaOH 20% and sulphidity 20%.(2) Pentosan contents in the unbleached pulp depend upon the prehydrolysis conditions, and the pulp which is produced during the above treatments, has less than 5 per cent of pentosan contents. (3) Average degree of polymerization of bleached dissolving bamboo pulp compares favorably with those of dissolving pulp from woods. (4) Chemical properties of dissolving bamboo pulp have no great difference from those of dissolving pulp from woods. (5) There is no a wide difference between the filterabilities of viscose made from bamboo and those from woods. (6) The dissolving bamboo pulp manufactured through these processes, may be possible to be utilized in industrial practice. Bambusa from Indonesia is more suitable than Phyllostachys from Japan for the raw materials of dissolving pulp, in viewpoints of the yield and the average degree of polymerization of pulp.
大阪府立大学の論文
1965-01-15