| 초록 |
Poly(L-lactide) (PLLA) is a well known biomass-based polymer known that is biodegradable and biocompatible. However, in spite of many advantages as a biomaterial, it still has several shortcomings in practical applications and its physical properties need to be improved. In this study order to improve PLLA’s impact strength of PLLA, it was blended with modified poly(n-butyl acrylate) (PBA). Modified PBA was prepared by copolymerization of n-butyl acrylate and 2-hydroxyethyl methacrylate terminated PLLA. The chemical structure of the copolymer was confirmed by FT-IR and 1H-NMR. The effect of the addition of up to 10 phr of the modified PBA on the mechanical properties of blends was investigated by UTM and Izod impact tester. The Izod-fractured surfaces were examined by SEM to study the fracture mechanism of the blends. In addition, thermal properties of blends were characterized by DSC and TGA. |
