アルカリ・メタノール蒸解に関する研究-3-蒸解過程におけるリグニンの挙動

• Material Type: 記事
• Title: アルカリ・メタノール蒸解に関する研究-3-蒸解過程におけるリグニンの挙動
• Author/Editor: 大間 秀紀; 細谷 修二; 中野 準三
• Author Heading: 大間 秀紀; 細谷 修二; 中野 準三
• Periodical title: 紙パ技協誌 = Japan TAPPI journal
• No. or year of volume/issue: 32(4) 1978.04
• Volume: 32
• Issue: 4
• Pages: p245～248
• Publication date of volume/issue (W3CDTF): 1978-04
• ISSN (Periodical Title): 0022-815X
• ISSN-L (Periodical Title): 0022-815X
• Publication (Periodical Title): 東京 : 紙パルプ技術協会
• Place of Publication (Country Code): JP
• Text Language Code: jpn
• NDLC: ZP19
• Target Audience: 一般
• Article Type: 記事分類: 化学・化学工業--紙・パルプ
• Holding library: 国立国会図書館
• Call No.: Z17-76
• Data Provider (Database): 国立国会図書館 : 国立国会図書館雑誌記事索引; https://ndlsearch.ndl.go.jp
• Bibliographic ID (NDL): 1937880; http://id.ndl.go.jp/bib/1937880
• Bibliographic Record Category (NDL): 632

• Summary, etc.: The behavior of lignin during alkali-methanol cooking has been studied using the lignin model compounds, vanillylalcohol and veratrylalcohol. The amounts of functional groups and molecular weight distributions of isolated alkali-methanol and soda lignins have been measured.<BR>Vanillylalcohol was methylated to vanillylmethylether by treating with alkali-methanol, while vanillylalcohol gave the condensation products with soda cooking liquor. These facts indicate that the mehylation of vanillylalcohol prevents the condensation of it. Vaeratrylmethylether was only slightly produced from veratrylalcohol by alkali-methanol treatment.<BR>Comparing the functional groups of both isolated lignins, there are higher amounts of methoxyl groups in alkali-methanol lignin and of phenolic hydroxyl groups in soda lignin. Gel filtration curves of both isolated lignins have revealed that there are less high molecular weight fractions in alkali-methanol lignin than in soda lignin under the same cooking conditions.<BR>Summarizing the results mentioned above, it can be concluded that the rapid delignification during alkali-methanol cooking is due to the prevention of condensation through the methylation of active benzylalcohol groups in lignin molecule.
• DOI: 10.2524/jtappij.32.4_245
• Access Restrictions: インターネット公開
• Data Provider (Database): 科学技術振興機構 : J-STAGE; http://www.jstage.jst.go.jp

• Summary, etc.: The behavior of lignin during alkali-methanol cooking has been studied using the lignin model compounds, vanillylalcohol and veratrylalcohol. The amounts of functional groups and molecular weight distributions of isolated alkali-methanol and soda lignins have been measured.<BR>Vanillylalcohol was methylated to vanillylmethylether by treating with alkali-methanol, while vanillylalcohol gave the condensation products with soda cooking liquor. These facts indicate that the mehylation of vanillylalcohol prevents the condensation of it. Vaeratrylmethylether was only slightly produced from veratrylalcohol by alkali-methanol treatment.<BR>Comparing the functional groups of both isolated lignins, there are higher amounts of methoxyl groups in alkali-methanol lignin and of phenolic hydroxyl groups in soda lignin. Gel filtration curves of both isolated lignins have revealed that there are less high molecular weight fractions in alkali-methanol lignin than in soda lignin under the same cooking conditions.<BR>Summarizing the results mentioned above, it can be concluded that the rapid delignification during alkali-methanol cooking is due to the prevention of condensation through the methylation of active benzylalcohol groups in lignin molecule.
• DOI: 10.2524/jtappij.32.4_245; https://doi.org/10.2524/jtappij.32.4_245
• Related Material (URI): http://id.ndl.go.jp/bib/1937880; https://ndlsearch.ndl.go.jp/books/R000000004-I1937880
• Data Provider (Database): 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• Original Data Provider (Database): Japan Link Center; https://japanlinkcenter.org/top; 雑誌記事索引データベース; https://ndlsearch.ndl.go.jp; Crossref; https://www.crossref.org; CiNii Articles
• Bibliographic ID (NDL): 1937880; http://id.ndl.go.jp/bib/1937880
• NAID: 130003686342