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ID 34202
フルテキストURL
著者
Brebu, Mihai Petru Poni Institute of Macromolecular Chemistry
Bhaskar, Thallada Department of Applied Chemistry, Faculty of Engineering, Okayama University
Muto, Akinori Department of Applied Chemistry, Faculty of Engineering, Okayama University
Sakata, Yusaku Department of Applied Chemistry, Faculty of Engineering, Okayama University
抄録

A method to recover both Br and Br-free plastic from brominated flame retardant high impact polystyrene (HIPS-Br) was proposed. HIPS-Br containing 15% Br was treated in autoclave at 280℃ using water or KOH solution of various amounts and concentrations. Hydrothermal treatment (30 ml water) leads to 90% debromination of 1 g HIPS-Br but plastic is strongly degraded and could not be recovered. previous termAlkalinenext term hydrothermal treatment (45 ml or 60 ml KOH 1 M) showed similar debromination for up to 12 g HIPS-Br and plastic was recovered as pellets with molecular weight distribution close to that of the initial material. Debromination occurs at melt plastic/KOH solution interface when liquid/vapour equilibrium is attained inside autoclave (280℃ and 7 MPa in our experimental conditions) and depends on the plastic amount/KOH volume ratio. The antimony oxide synergist from HIPS-Br remains in recovered plastic during treatment. A pictorial imagination of the proposed debromination process is presented.

キーワード
Debromination
Alkaline hydrotreatment
HIPS-Br
Bromine recovery
備考
Digital Object Identifer: 10.1016/j.chemosphere.2006.02.036
Published with permission from the copyright holder. This is the author's copy, as published in Chemosphere, August 2006, Volume 64, Issue 6, Pages 1021-1025.
Publisher URL:http://dx.doi.org/10.1016/j.chemosphere.2006.02.036
Direct access to Thomson Web of Science
Copyright © 2006 Elsevier Ltd. All rights reserved.
発行日
2006-08
出版物タイトル
Chemosphere
64巻
6号
出版者
Pergamon-Elsevier Science Ltd
開始ページ
1021
終了ページ
1025
ISSN
0045-6535
NCID
AA00603442
資料タイプ
学術雑誌論文
言語
English
著作権者
Elsevier Ltd.
論文のバージョン
author
査読
有り
DOI
Web of Science KeyUT
Submission Path
environmental_sciences_general/1