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Selective decomposition of hexabromocyclododecane in polystyrene with a photo and thermal hybrid treatment system

Selective hexabromocyclododecane (HBCD) decomposition was performed with a polystyrene (PS)/HBCD flour sample by a photo and thermal hybrid treatment system. The complete HBCD decomposition required the multistep treatment to control PS crosslink reaction. The HBCD decomposition was initially perfor...

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Published in:	Polymer degradation and stability 2017-09, Vol.143, p.130-135
Main Authors:	Arita, Saki, Yamaguchi, Kanae, Motokucho, Suguru, Nakatani, Hisayuki
Format:	Article
Language:	English
Subjects:	Crosslinking Decomposition Decomposition reactions Heat treatment Hexabromocyclododecane Hybrid systems NMR Nuclear magnetic resonance Photo and thermal hybrid treatment Photocatalysis Polyethylene Polyethylenes Polystyrene Polystyrene resins Recycle Stiffness Titanium oxides
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container_title	Polymer degradation and stability
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creator	Arita, Saki Yamaguchi, Kanae Motokucho, Suguru Nakatani, Hisayuki
description	Selective hexabromocyclododecane (HBCD) decomposition was performed with a polystyrene (PS)/HBCD flour sample by a photo and thermal hybrid treatment system. The complete HBCD decomposition required the multistep treatment to control PS crosslink reaction. The HBCD decomposition was initially performed by a TiO2/polyethylene oxide (PEO) photocatalyst and then was thoroughly done with breaking a dormant species (nitroxyl compound) by thermal treatment. The decomposition ratio reached 94% by the hybrid treatment. The 1H-NMR spectrum of decomposition residue showed that HBCD fragmentation occurred and that PS part was modified. The recycled PS contained a polymer chain grafting HBCD moiety. The graft caused PS stiffness enhancement although the ratio was a very low value.
doi_str_mv	10.1016/j.polymdegradstab.2017.07.003
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source	ScienceDirect Journals
subjects	Crosslinking Decomposition Decomposition reactions Heat treatment Hexabromocyclododecane Hybrid systems NMR Nuclear magnetic resonance Photo and thermal hybrid treatment Photocatalysis Polyethylene Polyethylenes Polystyrene Polystyrene resins Recycle Stiffness Titanium oxides
title	Selective decomposition of hexabromocyclododecane in polystyrene with a photo and thermal hybrid treatment system
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