Artículos de revistas
Synthesis and Characterization of a Hybrid Material Based on a Trimethoxysilane Functionalized Benzoxazine
Fecha
2012-04Registro en:
Spontón, Marisa Elisabet; Estenoz, Diana Alejandra; Ligadas, G.; Ronda, J.; Galià, M.; et al.; Synthesis and Characterization of a Hybrid Material Based on a Trimethoxysilane Functionalized Benzoxazine; John Wiley & Sons Inc; Journal Of Applied Polymer Science; 126; 4; 4-2012; 1369-1376
0021-8995
CONICET Digital
CONICET
Autor
Spontón, Marisa Elisabet
Estenoz, Diana Alejandra
Ligadas, G.
Ronda, J.
Galià, M.
Cádiz, V.
Resumen
A polybenzoxazine / polysiloxane hybrid has been prepared by sol-gel process and ring-opening polymerization. For this purpose, first a functionalized benzoxazine was synthesized from bisphenol A, paraformaldehyde and 3(trimethoxysilyl) propylamine, with initial molar ratio 1:4:2, and 95% yield. The structure of the monomer was characterized by Fourier Transform Infrared, Spectroscopy (FTIR) and Nuclear Magnetic Resonance (NMR). The sol-gel process and curing behavior have been studied by FTIR spectroscopy and Differential Scanning Calorimetry (DSC). The Dynamic Mechanical Analysis (DMTA) of the hybrid material(Bz-PSi) showed higher Tg and storage modulus respect to the conventional polybenzoxazine (Bz-BA). Also, the Thermogravimetric Analysis (TGA) revealed better thermal stability. The high Limiting Oxygen Index (LOI) values (about LOI = 32)confirmed similar effective flame retardance properties of the hybrid material respect conventional benzoxazine.