Naslov
Preparation and properties of organic-inorganic hybrids based on poly(methyl methacrylate) and sol-gel polymerized 3-glycidyloxypropyltrimethoxysilane

Autori
Ivanković, Marica ; Brnardić, Ivan ; Ivanković, Hrvoje ; Huskić, Miroslav ; Gajović, Andreja

Izvornik
Polymer (0032-3861) 50 (2009), 12; 2544-2550

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
organic-inorganic hybrids ; PMMA ; sol-gel

Sažetak
New organic-inorganic hybrid materials were prepared by the sol-gel process. Simultaneous polymerizations of methyl methacrylate (MMA) and an organically modified silicon alkoxyde, 3-glycidyloxypropyltrimethoxysilane (GLYMO), with varying MMA/GLYMO molar ratio, were performed. Poly(oxypropylene)diamine was used as an epoxy opening agent, as basic catalyst for GLYMO condensation and as poly(methyl methacrylate) (PMMA) crosslinking agent. Chemical reactions and the structure of prepared hybrids were studied by means of Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA) and by scanning electron microscopy (SEM). Depending on the ratios of organic and inorganic components hybrids showed either a discrete microstructure or interpenetrating polymer networks (IPN) structure. Silsesquioxane (SSQO) structures formed as a result of GLYMO hydrolysis and condensation in the sol-gel process influence the glass transition temperature of PMMA. The hybrids have much better thermal stability than PMMA, their surfaces are more hydrophilic than PMMA and they may have potential as damping materials.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemijsko inženjerstvo, Temeljne tehničke znanosti

Napomena
Glavni autori: Marica Ivanković, Ivan Brnardić

POVEZANOST RADA