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Environment-friendly chemical recycling of aliphatic polyurethanes by hydrolysis in a CO2-water system
http://hdl.handle.net/10069/40167
http://hdl.handle.net/10069/40167764a5741-c934-4312-9117-6437146ca1d1
名前 / ファイル | ライセンス | アクション |
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JAPS135_45897.pdf (427.4 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2020-08-18 | |||||
タイトル | ||||||
タイトル | Environment-friendly chemical recycling of aliphatic polyurethanes by hydrolysis in a CO2-water system | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | degradation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | polyurethane | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | recycling | |||||
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 | |||||
著者 |
Motokucho, Suguru
× Motokucho, Suguru× Nakayama, Yu× Morikawa, Hiroshi× Nakatani, Hisayuki |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In order to develop a chemical recycling system of polyurethanes (PUs), environment-friendly hydrolysis of two types of aliphatic PUs was studied under pressured CO2 in water, in which the carbonic acid generated from CO2 acted as an acid catalyst. Two PUs, namely H-PU or I-PU, were synthesized starting from 1,4-butanediol and 1,6-hexamethylene diisocyanate or isophorone diisocyanate, respectively. The hydrolysis of PUs depended on the experimental conditions, such as the temperature and CO2 pressure. As a result, 98% of H-PU and 91% of I-PU were successfully hydrolyzed under the typical conditions of 190?°C for 24 h at 8.0 MPa CO2. The reaction mixtures afforded 1,4-butanediol and diamines without the formation of any byproducts. Both of these raw materials generated from the originated PUs by selective hydrolytic cleavage of the urethane linkages, and they were easily isolated in high yields simply by evaporation of the water-soluble components within the reaction mixture. By comparing the results of the two aliphatic PUs with those of an aromatic PU (M-PU), the hydrolyzability was found to decrease in the order H-PU, I-PU, and M-PU. The difference can be ascribed to the hydrophilicity of the aliphatic or aromatic groups connected to the urethane moieties at the terminals of PUs. | |||||
書誌情報 |
Journal of Applied Polymer Science, 135(8), art.no.45897; 2017 巻 135, 号 8, p. 45897, 発行日 2017-10-26 |
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出版者 | ||||||
出版者 | Wiley Periodicals, Inc. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00218995 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1002/app.45897 | |||||
権利 | ||||||
権利情報 | c 2017 Wiley Periodicals, Inc. This is the peer reviewed version of the following article: Journal of Applied Polymer Science, 135(8), art.no.45897; 2017, which has been published in final form at https://doi.org/10.1002/app.45897. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Journal of Applied Polymer Science |