| 초록 |
The epoxidized linseed oil (ELO) was synthesized and characterized using fourier transform infrared (FT-IR) spectra, gel permeation chromatograph (GPC), and epoxy equivalent weight (EEW) tests. The DGEBA was blended with ELO to obtain the modified network having ELO content from 10 to 40 wt.%. The DGEBA and DGEBA/ELO blends were characterized by the biodegradability, thermal, and mechanical properties. The thermal properties of DGEBA/ELO blends were investigated using differential scanning calorimeter (DSC) and dynamic mechanical analyze (DMA). The mechanical properties of the DGEBA/ELO blends were studied by means of measurements of the Izod impact strength and by critical stress intensity factor (KIC). The morphologies were observed by scanning electron microscopy (SEM). In the result, the impact strength of the DGEBA/ELO blends was significantly improved with the addition of ELO, owing to reduced cross-linking density of the epoxy network. |
