Naslov
Synthesis and characterization of organic-inorganic hybrids based on epoxy resin and 3-glycidyloxypropyltrimethoxysilane

Autori
Macan, Jelena ; Ivanković, Hrvoje ; Ivanković, Marica ; Mencer, Helena Jasna

Izvornik
Journal of applied polymer science (0021-8995) 92 (2004), 1; 498-505

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

Ključne riječi
nanocomposites ; silica ; sol-gel process ; structure ; thermosets

Sažetak
Organic-inorganic hybrid materials based on diglycidyl ether of bisphenol A (DGEBA) and 3-glycidyloxypropyltrimethoxysilane (GLYMO) were prepared, using a poly(oxypropylene) diamine Jeffamine D230 as a curing agent. Materials were studied by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), infrared spectroscopy, swelling in tetrahydrofurane (THF) and Soxhlet extraction in THF. A dependence of the final conversion of epoxy groups and the final degree of cross-linking on inorganic phase content was found. Inorganic phase presents a steric hindrance to full crosslinking of epoxy groups. It also immobilizes the organic chains, and improves the temperature stability of hybrid materials. Products of GLYMO hydrolysis together with unreacted organic molecules lower the glass transition temperature of hybrid materials. Epoxy groups of GLYMO were found to react only with primary amine.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA