Flame-retarded polystyrene: Investigating chemical interactions between ammonium polyphosphate and MgAl layered double hydroxide

被引：122

作者：

Nyambo, Calistor ^{[1
,2
]}

Kandare, Everson ^{[3
]}

Wang, Dongyan ^{[4
]}

Wilkie, Charles A. ^{[1
,2
]}

机构：

[1] Marquette Univ, Dept Chem, Milwaukee, WI 53201 USA

[2] Marquette Univ, Ctr Fire Retardant Res, Milwaukee, WI 53201 USA

[3] Univ Bolton, Ctr Mat Res & Innovat, Bolton BL3 5AB, England

[4] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA

来源：

POLYMER DEGRADATION AND STABILITY | 2008年 / 93卷 / 09期

关键词：

polystyrene; ammonium polyphosphate; layered double hydroxide; synergy;

D O I：

10.1016/j.polymdegradstab.2008.05.029

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Potential flame retardants, MgAl-LDH and ammonium polyphosphate (APP), were added to neat polystyrene (PS) individually or in combinations at weight fractions no greater than 10%. Structural morphologies of MgAl-LDH and the corresponding PS nanocomposites were established via X-ray diffraction (XRD) and transmission electron microscopy (TEM). Thermogravimetric analysis (TGA) and cone calorimetry were used to study the thermal stability and fire performance of the composites. Time to ignition is greatly reduced for PS composites when compared to the virgin polymer. Synergistic effects were observed in both TGA and cone calorimetry for formulations containing both MgAl-LDH and APP. Physical and chemical interactions between MgAl-LDH and APP are responsible for the observed synergy in thermal stability and fire performance. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1656 / 1663

页数：8

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