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木材の収縮膨脹に関する異方性の原因について(第 19 報) : 細胞膜の構造と異方的収縮(林学部門)
https://kpu.repo.nii.ac.jp/records/4684
https://kpu.repo.nii.ac.jp/records/4684e5ea0f91-e19c-4f3a-8359-2033d309f13e
| 名前 / ファイル | ライセンス | アクション |
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KJ00000078683.pdf (823.0 kB)
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| Item type | [ELS]紀要論文 / Departmental Bulletin Paper(1) | |||||||||||||
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| 公開日 | 2017-02-20 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | 木材の収縮膨脹に関する異方性の原因について(第 19 報) : 細胞膜の構造と異方的収縮(林学部門) | |||||||||||||
| 言語 | ja | |||||||||||||
| その他（別言語等） | ||||||||||||||
| その他のタイトル | On the Cause of the Anisotropic Shrinkage and Swelling of Wood XIX : On the Relationships between the Structure of Cell-Wall and the Anisotropic Shrinkage in Transverse Section (Forestry) | |||||||||||||
| 言語 | en | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | jpn | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||||||
| 著者 |
中戸, 莞二
× 中戸, 莞二
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| 抄録(日) | ||||||||||||||
| 内容記述タイプ | Other | |||||||||||||
| 内容記述 | 本報の結果から, 木材横断面における異方的収縮と細胞膜の構造について次のことが指摘される。(1)異方的収縮の細胞膜構造における要因は, a.中間層の組織化学的構造および細胞膜において占める割合, b.第二次膜非晶領域の組織化学的構造, c.第二次膜中層のフィブリル傾斜角, 等における切線膜と半径膜の相違である。(2)前項におけるa.とb.の要因は木材中のリグニンに関係するものであり, 木材の異方的収縮に及ぼすこれらの影響は, 要因c.のそれよりもいちじるしい。(3)要因a.は収縮にさいして他の膜層の収縮を制約することによつて, 要因b.とc.は細胞膜中の水分吸着点の分布密度に関連することによつて, 木材の横断面における異方的収縮と関係する。また, 本報で用いた処理法と木材の収縮について次のことが指摘される。(1)脱脂処理は切線および半径収縮, 横断面における収縮異方度に影響を及ぼさない。(2)脱リグニン処理は切線および半径収縮を増大させるが, 処理ブロックの収縮は異常収縮を伴ないやすい。また横断面における収縮異方度は処理によつて減小する。(3)ホルムアルデヒド処理は細胞膜構造単位間の架橋結合の形成によつて, 木材のdimensional stabilityを向上させるものと思われる。また, この処理は木材のdimensional stabilityを向上させる有効な方法であるが, 横断面における収縮異方性を改善しない。 | |||||||||||||
| 言語 | ja | |||||||||||||
| 抄録(英) | ||||||||||||||
| 内容記述タイプ | Other | |||||||||||||
| 内容記述 | On the relations between the structure of cell-wall and the anisotropic shrinkage in transverse section of wood, the followings are concluded from the experimental results in this report. 1) The principal cause of anisotropic shrinkage in transverse section are based upon the cell-wall structure. And the following factors in cell-wall structure for the anisotropic shrinkage are indicated : a. the microchemical structure and the proportion in cell-wall of compound middle lamella b. the microchemical structure of amorphous gion in secondary wall c. the fibril angle in central layer of secondary wall 2) The factors a. and b. in 1) are closely connected with the contained lignin in wood. And the effect of factors a. and b. upon the anisotropic ahrinkage of wood is larger than the one of factor c.. 3) The relations between factor a. and anisotropic shrinkage in transverse section seems to be due to the restraint action of compound middle lamella on the shrinkage of other layers in cell-wall. And the relations between factors b. or c. and anisotropic shrinkage seeme to be due to the connections of these factors with the distribution of active hydroxyl groups. On the relations between the treatments used in this study and the shrinkage of wood, the results of experiments obtained are summarized as follows : 1) The extrction-treatment with alcohol-benzol has not the plain influece upon the tangential (β_t) and radial shrinkage (β_r) and the coefficient of anisotropic shrinkage (β_t/β_r) as shown in Fig. 1. 2) The tangential and radial shrinkage of springwooden blocks extracted with alcohol-benzol increase with the progress of delignification, on the other hand the coefficient of anisotropic shrinkage decrease with that, as shown in Fig. 2. However, the difference of trend between the relationships of shrinkage vs. lignin contents of delignifide springwood and the relationships of dielectric constant (ε or ε/ρ_0 in Fig. 2) vs. lignin contents of delignifide springwood as shown in Fig. 2 seems to indicate that the shrinkage of delignifide springwood includs the abnormal shrinkage. 3) The treatment with formaldehyde under hydrogen chloride catalyst is effective for the dimensional stability of wood as shown in Table 1. This effect seems to be due to the cross-linking reaction in cell walls, for the reason the effect on dimensional stability is recognized on the shrinkage in width of tracheid cell-walls as shown in Table 2. However this treatment has no effect on the improvement of anisitropy on shrinkege in transverse section as shown in Tabie 1 and 2. | |||||||||||||
| 言語 | en | |||||||||||||
| 書誌情報 |
ja : 京都府立大學學術報告. 農學 en : The scientific reports of Kyoto Prefectural University. Agriculture 巻 12, p. 98-105, 発行日 1960-09-01 |
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| 収録物識別子タイプ | NCID | |||||||||||||
| 収録物識別子 | AN00062275 | |||||||||||||
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| 収録物識別子タイプ | PISSN | |||||||||||||
| 収録物識別子 | 00757373 | |||||||||||||
