| 초록 |
Poly(lactic acid) (PLA) is a biodegradable engineering plastic with high mechanical strength and easy processability. But, PLA softens at lower temperatures compared to other commodity polymers. Therefore, in this study, cellulose nanowhiskers (CNWs) were prepared and used as reinforcing nanofillers for PLA. To improve interfacial adhesion between PLA and CNWs maleic anhydride (MA)-graft PLA was prepared by melt-blending and used. To improve the performance of PLA/CNW nanocomposites inorganic nanoparticles like nanoclay were also introduced. The structure of the CNWs was investigated by TEM. Physical properties of the PLA/CNW nanocomposites were investigated by UTM, izod impact tester, DMA, and TMA. SEM images for the fractured-surfaces of the PLA/CNW nanocomposites gave important information on the fracture mechanics of the nanocomposites. The effects of MA-grafted PLA as well as inorganic nanoparticles on the performance improvement of the PLA/CNW nanocomposites were considerable. |
