| 초록 |
PLA is one of the most studied biodegradable materials due to its biocompatibility, biodegradability, and excellent machining behavior. However, PLA also has disadvantages of poor toughness and thermal stability. PK is a new environment-friendly and promising engineering plastic with high thermal stability and impact strength. In this study, to obtain eco-friendly and sustainable PLA materials with highly enhanced thermal and mechanical properties, glycidyl methacrylate was grafted to PK (PKGMA) via reactive melt-mixing for improving the interfacial adhesion between PK and PLA. For these purposes, a series of PLA-dominant blends with 0-50 wt% PKGMA loadings were manufactured through efficient melt-compounding and injection-molding. The molecular interactions and compatibility of PLA/PKGMA blends were characterized using FT-IR, SEM, and XRD. The thermal, rheological, and mechanical properties of the blends were measured using DSC, TGA, rheometer, DMA, and Izod impact tester. |
