{"created":"2023-06-19T08:46:06.038196+00:00","id":4814,"links":{},"metadata":{"_buckets":{"deposit":"a12930dc-592b-494a-b8dc-66c6e7490c52"},"_deposit":{"created_by":14,"id":"4814","owners":[14],"pid":{"revision_id":0,"type":"depid","value":"4814"},"status":"published"},"_oai":{"id":"oai:kpu.repo.nii.ac.jp:00004814","sets":["47:273:411"]},"author_link":["7776","7777"],"control_number":"4814","item_1696926521561":{"attribute_name":"その他（別言語等）","attribute_value_mlt":[{"subitem_alternative_title":"Studies on the wettability of wood II : Influences of some extracting treatments on the wettability of wood (Forestry)","subitem_alternative_title_language":"en"}]},"item_3_biblio_info_12":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1967-10-15","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"83","bibliographicPageStart":"76","bibliographicVolumeNumber":"19","bibliographic_titles":[{"bibliographic_title":"京都府立大學學術報告. 農學","bibliographic_titleLang":"ja"},{"bibliographic_title":"The scientific reports of Kyoto Prefectural University. Agriculture","bibliographic_titleLang":"en"}]}]},"item_3_description_10":{"attribute_name":"抄録(日)","attribute_value_mlt":[{"subitem_description":"本研究は木材の化学的性質と湿潤性の関係を明らかにする目的で, 2種のラワン材を用いて6種の抽出処理を行い, それぞれの抽出処理試料の水に対する湿潤性を毛管上昇法によって測定し, 木材の湿潤性に及ぼす各種抽出処理の影響を検討した。その結果, (1)各種抽出処理試料の毛管上昇経過曲線の実験式として, log h=a log t+log b……(2)が得られる。(2)式より上昇速度式はdh/dt=(abt)^<a-1>……(3)となり, 上昇速度の指標として定数abをとることができる。したがって, 毛管上昇法によって木材の湿潤性を検討するには, 初期上昇高bおよび前記abならびに平衡上昇高(h_<72>)を用いるのが妥当である。(2)冷水(20°, 40℃)抽出処理試料のb, abおよびh_<72>は, 無処理試料のそれよりも小さく, 冷水抽出処理は, 木材の湿潤性に負の作用を及ぼす。(3)水抽出温度が高くなるとともに, また100℃では抽出時間が長くなるとともに, 木材の湿潤性は高くなる。すなわち, 60°&acd;100℃の水温で抽出される物質の湿潤性は低いと考えられる。(4)アルカリ抽出処理試料のb, abおよびh_<72>は, 無処理試料のそれよりもかなり小さい(Table 1.)。これはヘミセルロースなどが多量除去されて表面に親和性の低い物質が現われたことによるものと思われる。(5)エーテル抽出処理試料の湿潤性は, 無処理のそれよりも低くなり, 抽出時間を長くしても効果はない。(6)短時間(3および6時間)のアル・ベン抽出処理試料の湿潤性は低い。これは木粉粒子内の抽出物の分布状態が変化し, 粒子表面の親和性が低下したことによるものと考えられる。抽出時間が長くなるとともに処理試料の湿潤性は, 無処理試料のそれよりも高くなる。したがって, アル・ベン抽出物(樹脂様物質)は, 木材の湿潤性に負の作用を及ぼすと思われる。(7)脱リグニン処理試料の湿潤性は, 両樹種ともかなり高い。すなわち, 木材の主要成分であるホロセルロースの湿潤性は高く, リグニンの木材の湿潤性に及ぼす効果は負である。(8)ホロセルロースから段階的に脱ヘミセルロース処理を行なった試料の湿潤性を検討した結果から, ヘミセルロースを構成している個々の成分の湿潤性に及ぼす影響は, 各々異なるものと思われ, その中でもウロン酸の効果が最も大きいと推定される。またセルロースの湿潤性は, 素材のそれよりもかなり高い。","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_3_description_11":{"attribute_name":"抄録(英)","attribute_value_mlt":[{"subitem_description":"The purpose of the present study is to obtain the knowledge about the relationship between the chemical constituents of wood and the wettability of wood. The wettability of wood which is extracted with water, caustic soda, ether, alcoholbenzol, sodium chlorite, and oxalic acid, respectively, are investigated and compared with that of untreated wood using the capillary rise method (shown in Ist report). The wood flour prepared from Red lauan (Shorea negrosonsis Foxw.) and White lauan (Pentacme contorta M. et R.) were used for this experiment, and water was used as a wetting liquid. Results obtained are as follows : 1) When the logarithm of the height of capillary rise (h) in the extractive treated wood flour were plotted against the logarithm of time (t), the linear relationship was obtained (Fig. 2). From the straight line the empirical formula may be expressed by Eq. (2) : lon h=alog t+log b……(2) Then the Eq. (2) becomes dh/dt=ab t^<a-1>……(3) where dh/dt is the rate of the capillary rise. The constant ab in the Eq. (3) can be used as the index to evaluate the rate of the capillary rise. Therefore, it seems that the initial height b (b : the height of capillary rise at one hour after the start of measuring.), the constant ab above mentioned, and the height of rise after 72 hours (h_<72>) are needed as the indexes for estimating of the wettability of wood using the capillary rise method. 2) The extracting treatment with cold water (20°, 40℃) decreases the wettability of wood. However, an increase in temperature of water, which is used for extracting treatment, increases the height of capillary rise, and the degree of increase at 100℃ becomes larger with longer extracting time (Fig. 3 and 4). 3) The extracting treatment with caustic soda (1%) decreases considerably the wettability of wood (Table 1). 4) The wettability of wood increases gradually by the alcohol-benzol extraction, but the wettability of extracted wood at the short time (3,6 hours) is lower than that of untreated wood (Fig. 5). 5) The wettability of wood also increases considerably by the delignification and especially rapidly with more delignification. It is shown that the wettability of holocellulose is higher than that of other components (Fig. 6). 6) The wettability of flour removed hemicellulose from holocellulose with 0.2% oxalic acid, is higher than that of untreated wood. The higher capillary rise resulted from removing of the more hemicellulose and the curve of process of capillary rise is gradually nearer that of cellulose by such a treatment.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_3_source_id_1":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AN00062275","subitem_source_identifier_type":"NCID"}]},"item_3_source_id_20":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"00757373","subitem_source_identifier_type":"PISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"梶田, 煕","creatorNameLang":"ja"},{"creatorName":"カジタ, ヒロム","creatorNameLang":"ja-Kana"},{"creatorName":"Kajita, Hiromu","creatorNameLang":"en"}],"familyNames":[{},{},{}],"givenNames":[{},{},{}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"椋代, 純輔","creatorNameLang":"ja"},{"creatorName":"ムクダイ, ジュンスケ","creatorNameLang":"ja-Kana"},{"creatorName":"Mukudai, Junsuke","creatorNameLang":"en"}],"familyNames":[{},{},{}],"givenNames":[{},{},{}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-02-20"}],"displaytype":"detail","filename":"KJ00000078813.pdf","filesize":[{"value":"783.3 kB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"label":"KJ00000078813.pdf","url":"https://kpu.repo.nii.ac.jp/record/4814/files/KJ00000078813.pdf"},"version_id":"ff6cdac5-e078-4d99-a693-c0b1efa3dca2"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper"}]},"item_title":"木材の湿潤性に関する研究 II : 木材(木材-水系)の湿潤性に及ぼす 2・3 の抽出処理の影響(林学部門)","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"木材の湿潤性に関する研究 II : 木材(木材-水系)の湿潤性に及ぼす 2・3 の抽出処理の影響(林学部門)","subitem_title_language":"ja"}]},"item_type_id":"3","owner":"14","path":["411"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2017-02-20"},"publish_date":"2017-02-20","publish_status":"0","recid":"4814","relation_version_is_last":true,"title":["木材の湿潤性に関する研究 II : 木材(木材-水系)の湿潤性に及ぼす 2・3 の抽出処理の影響(林学部門)"],"weko_creator_id":"14","weko_shared_id":-1},"updated":"2024-04-11T04:45:40.887217+00:00"}