Bionanocomposites from Renewable Resources:Epoxidized Linseed Oil-Polyhedral Oligomeric Silsesquioxanes Hybrid Materials

摘要

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-T_8-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.