Influence of the surface modification of alumina nanoparticles on the thermal stability and fire reaction of PMMA composites

被引：45

作者：

Cinausero, Nicolas ^{[1
]}

Azema, Nathalie ^{[1
]}

Cochez, Marianne ^{[2
]}

Ferriol, Michel ^{[2
]}

Essahli, Mohamed ^{[3
,4
]}

Ganachaud, Francois ^{[3
]}

Lopez-Cuesta, Jose-Marie ^{[1
]}

机构：

[1] Ecole Mines Ales, Ctr Mat Grande Diffus, F-30319 Ales, France

[2] Univ Paul Verlaine Metz, Dept Chim IUT Moselle Est, Lab MOPS, UMR CNRS 7132, F-57500 St Avold, France

[3] Ecole Natl Super Chim Montpellier, Equipe Ingn & Architectures Macromol, Inst Charles Gerhardt, UMR CNRS ENSCM UM1 UM2 5253, F-34296 Montpellier, France

[4] Fac Sci & Tech Settat, Lab Procedes Valorisat Ressources Nat Mat & Envir, F-26000 Settat, Maroc, France

来源：

POLYMERS FOR ADVANCED TECHNOLOGIES | 2008年 / 19卷 / 06期

关键词：

nanocomposites; functionalization of polymers; flame retardancy;

D O I：

10.1002/pat.1157

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Nanometric aluminum oxide particles were modified by phosphonic acid-based oligomers of aromatic polyester, polyether, or polydimethylsiloxane (PDMS). The grafting process was characterized by FTIR spectroscopy and thermogravimetric analysis (TGA) showing that covalent bonds must have formed between the oxide and oligomers. The highest yield of grafting was achieved in dichloromethane (CH2Cl2) solvent. Then, nanocomposites were prepared by melt-blending in a poly(methyl methacrylate) (PMMA) matrix. The best results in terms of thermal stability and flammability were obtained with the bis-phosphonicpolydimethylsiloxane-based formulation. With this latter, the peak of heat released rate (pHRR) decreased during the combustion, whereas PyGC/MS experiments led to the conclusion that PDMS-covered nanoparticles played a role in the composition of the gaseous phase as well. Copyright (C) 2008 John Wiley & Sons, Ltd.

引用

页码：701 / 709

页数：9

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