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.

引用

页码：69 / 72

页数：4

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