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

Cinausero Nicolas | Zendy; Azema Nathalie | Zendy; Cochez Marianne | Zendy; Ferriol Michel | Zendy; Essahli Mohamed | Zendy; Ganachaud François | Zendy; LopezCuesta JoséMarie | Zendy

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

Author(s) -

Cinausero Nicolas,

Azema Nathalie,

Cochez Marianne,

Ferriol Michel,

Essahli Mohamed,

Ganachaud François,

LopezCuesta JoséMarie

Publication year - 2008

Publication title -

polymers for advanced technologies

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.61

H-Index - 90

eISSN - 1099-1581

pISSN - 1042-7147

DOI - 10.1002/pat.1157

Subject(s) - materials science , thermogravimetric analysis , thermal stability , nanocomposite , grafting , chemical engineering , polydimethylsiloxane , composite material , nanoparticle , flammability , phase (matter) , compatibilization , fourier transform infrared spectroscopy , dichloromethane , covalent bond , methyl methacrylate , oxide , polymer , polymer chemistry , solvent , monomer , organic chemistry , polymer blend , copolymer , nanotechnology , chemistry , engineering , metallurgy

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 (CH 2 Cl 2 ) 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 © 2008 John Wiley & Sons, Ltd.

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