Bionanocomposites from renewable resources: epoxidized linseed oil-polyhedral oligomeric silsesquioxanes hybrid materials.
This study is concerned with the preparation and properties of a new class of bionanocomposites from renewable resources. Epoxidized linseed oil (ELO) and 3-glycidylpropylheptaisobutyl-T8-polyhedral oligomeric silsesquioxane (G-POSS) (2, 5, and 10 wt %) were cross-linked, and Fourier transform infrared spectroscopy (FTIR), dynamic mechanical thermal analysis (DMTA), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) were employed to characterize the POSS-reinforced oil-based polymer networks. No POSS aggregates were observed for the 2 wt % G-POSS nanocomposite by SEM. POSS-rich particles with diameters of several nanometers were observed in the nanocomposites with 5 and 10 wt % G-POSS. Enhanced glass transition temperatures and storage moduli of the networks in the glassy state and rubber plateau were observed to be higher than those of the POSS-free oil based polymer network, due to the reinforcement effect of POSS cages.
Lligadas
Gerard
G
Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Campus Sescelades, Marcel.lí Domingo s/n, 43007 Tarragona, Spain.
Ronda
Joan C
JC
Galià
Marina
M
Cádiz
Virginia
V
D001672:Biocompatible Materials; D004852:Epoxy Compounds; D008043:Linseed Oil / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008958:Models, Molecular; D049329:Nanostructures; D011108:Polymers; D017550:Spectroscopy, Fourier Transform Infrared
D001672:Biocompatible Materials; D004852:Epoxy Compounds; D011108:Polymers; D008043:Linseed Oil