کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5200708 | 1502870 | 2017 | 6 صفحه PDF | دانلود رایگان |
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.
Journal: Polymer Degradation and Stability - Volume 143, September 2017, Pages 130-135