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Thermal degradation of poly(L-lactide): effect of alkali earth metal oxides for selective L,L-lactide formation
http://hdl.handle.net/10228/00006758
http://hdl.handle.net/10228/00006758c1f6b1ea-394b-403c-aca2-fccd4043dfa6
名前 / ファイル | ライセンス | アクション |
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Polymer_45_4.pdf (361.1 kB)
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Item type | 学術雑誌論文 = Journal Article(1) | |||||||||||||||||
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公開日 | 2018-05-10 | |||||||||||||||||
資源タイプ | ||||||||||||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||
資源タイプ | journal article | |||||||||||||||||
タイトル | ||||||||||||||||||
タイトル | Thermal degradation of poly(L-lactide): effect of alkali earth metal oxides for selective L,L-lactide formation | |||||||||||||||||
言語 | ||||||||||||||||||
言語 | eng | |||||||||||||||||
著者 |
Fan, Yujiang
× Fan, Yujiang× 西田, 治男
WEKO
21961
× Mori, Tomokazu× 白井, 義人
WEKO
8065
× 遠藤, 剛 |
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抄録 | ||||||||||||||||||
内容記述タイプ | Abstract | |||||||||||||||||
内容記述 | To achieve the feed stock recycling of poly(L-lactide) (PLLA) to L,L-lactide, PLLA composites including alkali earth metal oxides, such as calcium oxide (CaO) and magnesium oxide (MgO), were prepared and the effect of such metal oxides on the thermal degradation was investigated from the viewpoint of selective L,L-lactide formation. Metal oxides both lowered the degradation temperature range of PLLA and completely suppressed the production of oligomers other than lactides. CaO markedly lowered the degradation temperature, but caused some racemization of lactide, especially in a temperature range lower than 250 °C. Interestingly, with MgO racemization was avoided even in the lower temperature range. It is considered that the effect of MgO on the racemization is due to the lower basicity of Mg compared to Ca. At temperatures lower than 270 °C, the pyrolysis of PLLA/MgO (5 wt%) composite occurred smoothly causing unzipping depolymerization, resulting in selective L,L-lactide production. A degradation mechanism was discussed based on the results of kinetic analysis. A practical approach for the selective production of L,L-lactide from PLLA is proposed by using the PLLA/MgO composite. | |||||||||||||||||
書誌情報 |
Polymer 巻 45, 号 4, p. 1197-1205, 発行日 2004-01-10 |
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出版社 | ||||||||||||||||||
出版者 | Elsevier | |||||||||||||||||
DOI | ||||||||||||||||||
関連タイプ | isVersionOf | |||||||||||||||||
識別子タイプ | DOI | |||||||||||||||||
関連識別子 | info:doi/10.1016/j.polymer.2003.12.058 | |||||||||||||||||
ISSN | ||||||||||||||||||
収録物識別子タイプ | ISSN | |||||||||||||||||
収録物識別子 | 0032-3861 | |||||||||||||||||
著作権関連情報 | ||||||||||||||||||
権利情報 | Copyright (c) 2003 Elsevier Science Ltd. All rights reserved. | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Thermal degradation | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Poly(L-lactide) | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Racemization | |||||||||||||||||
出版タイプ | ||||||||||||||||||
出版タイプ | AM | |||||||||||||||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||||||||
査読の有無 | ||||||||||||||||||
値 | yes | |||||||||||||||||
研究者情報 | ||||||||||||||||||
https://hyokadb02.jimu.kyutech.ac.jp/html/397_ja.html | ||||||||||||||||||
論文ID(連携) | ||||||||||||||||||
10037578 | ||||||||||||||||||
連携ID | ||||||||||||||||||
6991 | ||||||||||||||||||
資料タイプ | ||||||||||||||||||
内容記述タイプ | Other | |||||||||||||||||
内容記述 | Journal Article | |||||||||||||||||
著者所属 | ||||||||||||||||||
Molecular Engineering Institute, Kinki University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0196, Japan | ||||||||||||||||||
著者所属 | ||||||||||||||||||
Molecular Engineering Institute, Kinki University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan | ||||||||||||||||||
著者所属 | ||||||||||||||||||
Molecular Engineering Institute, Kinki University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka, Fukuoka, 820-8502, Japan | ||||||||||||||||||
著者所属 | ||||||||||||||||||
Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0196, Japan | ||||||||||||||||||
著者所属 | ||||||||||||||||||
Molecular Engineering Institute, Kinki University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan, Faculty of Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan | ||||||||||||||||||
情報源 | ||||||||||||||||||
識別子タイプ | DOI | |||||||||||||||||
関連識別子 | https://doi.org/10.1016/j.polymer.2003.12.058 | |||||||||||||||||
関連名称 | https://doi.org/10.1016/j.polymer.2003.12.058 |