@article{oai:kpu.repo.nii.ac.jp:00004686,
 author = {佐道, 健 and SADOH, TAKESI},
 journal = {京都府立大學學術報告. 農學, The scientific reports of Kyoto Prefectural University. Agriculture},
 month = {Sep},
 note = {本報においては, 木材ヘミセルロースの吸湿に関する諸現象を解明するあたり, その動機, 重要性について記述し, ついで既往の研究に基いてヘミセルロースの定義および構造についての概略を記し, さらに吸湿性と関係のあるネットワーク構造について論じた。本研究の一連の実験, 測定に用いられた試料については, これが結晶性を示すネットワーク構造を有し, 乾燥状態と水溶液の間を可逆的に移行し, この際角質化現象の起らないことを確認した。さらに, 吸湿性研究に関連するヘミセルロースの構造, 組成に関する問題点を挙げ, a)木材中に存在する状態と単離した状態のヘミセルロースの関係, b)ヘミセルロースを単一の材料として取扱いうるか, 否か, c)供試試片の作成法, のそれぞれについて考察を加えた。, Preface The sorption of water by wood has been studies for many years on sorption isotherm, swelling, heat of sorption, and rate of sorption and diffusion. Most of these investigations have been discussed on wood itself or in conection with cellulose contained in wood. Little attention has been paid to the sorptive natures of wood hemicellulose, although the high sorptive capacity is infered by reason of the chemical and morphorogical structures, namely having the hygrophilic-OH groups, probably amorphous structure in wood and so on. In this study the some sorptive behaviours of water vapour by wood hemicellulose are investigated. Part 1 In this report the definications and structures of wood hemicellulose are described in accordance with previous investigations, and the network structures of it are discussed in relation of sorptive and swelling characters. To obtain a knowledge of network structures of hemicellulose the X-ray diffraction diagram of it is given. Hemicellulose films, which are prepared from Buna wood (Fagus crenata BLUME) by delignification with WISE'S method, extraction with 5% KOH aq. solution, precipitation with acidic alcohol, replacements of the liquids with alcohol and successively ether, dissolution into hot water, and drying on a glass plate, are used in the experiment. The X-ray diffraction diagram is shown in Fig. 1,and the diagram shows that the hemicellulose can take a well-orientated network structure. And the specimens are water soluble and change between filmy solid and aqueous solution reversibly without hornification (see part IV of this study). Hemicellulose is a mixture of several polysaccharides whose ratios differ with different species of original wood and with different methods of isolation, and has some colloidal natures. Thus it is concluded that to investigate on sorption of water vapour by wood hemicellulose man must pay attention to following subjects : a) Natural and isolated hemicelulloses. The sorptive behaviours will be effected by chemical and physical changes in hemicellulose during isolation. b) Hemicellulose as a simple material. The characters of individual polysaccharides must be considered in this case, but it is assumed that the different sorptive natures of hemicellulose with different ratios of compositions will be similar to them of wood with different ratios of components. c) Preparation of specimens. The specimens are required to give reproduciable results. The physical changes during experiments i. e. hornification, must be kept off, and the conditioned specimens must be used.},
 pages = {113--118},
 title = {木材ヘミセルロースの吸湿に関する研究(第 1 報) : ヘミセルロースの定義と構造(林学部門)},
 volume = {12},
 year = {1960},
 yomi = {サドウ, タケシ}
}