抄録
Adjustment microstructure by an annealing treatment and polymer alloy is a functionalization method of biodegradable plastic. In addition, the generalization of the biodegradable plastic, there is a need to evaluate the hydrolysis behavior and strength. Therefore, in this investigation, the effect of mechanical strength and hydrolytic behavior to functionalized biodegradable plastic were examined. In the experiment, poly lactic acid(PLA) was selected as the base material. Annealing treatment substrate were annealed at various times at 100℃ for PLA substrate. Polymer alloy material was prepared by mixing at various ratio of poly butylene succinate(PBS) and PLA. Tensile tests, impact tensile tests were conducted to evaluate the mechanical properties of each specimen. SEM and polarized light microscopy was used to observe the microstructure of the substrate. After hydrolysis, annealed substrate resulted reduction in tensile strength is small compared to the untreated. Elongation of the polymer alloy material improve with increasing content of PBS. Furthermore, impact strength was greatly improved at a ratio of 60:40 by weight. Than these results, the possibility of modifying the mechanical properties and resistance to hydrolysis has been suggested.
