Investigation of the thermal stability of nitroxide capped polystyrene by TGA and Py-GC/MS

被引：0
|
作者：
Roland, AI [1 ]
Stenzel, M [1 ]
Schmidt-Naake, G [1 ]
机构：
[1] TU Clausthal, Inst Tech Chem, D-38678 Clausthal Zellerfeld, Germany
来源：
ANGEWANDTE MAKROMOLEKULARE CHEMIE | 1998年 / 259卷
关键词：
D O I：
暂无
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The thermal stability of nitroxide capped polystyrene is examined by TGA and pyrolysis-GC/ MS. As opposed to technical polystyrene, these polymers (M-n < 30000 g mol(-1)) show a characteristic decomposition step at 230-250 degrees C. The volatile product of this step is mainly styrene, which results from retropolymerization. For some PS-N adducts terminator fragments can be identified. Prolonged isothermal treatment of PS-N adducts at their step temperature yields polystyrene without nitroxides. The loss of molecular weight is in the range of technical PS by the same treatment, but the polymers keep a narrow molecular weight distribution.
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页码：69 / 72
页数：4
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