3009 ポリ乳酸系ポリマーブレンドの開発と破壊特性評価(S40-3 生分解ポリマー,木質材料の強度評価,S40 バイオマス由来材料の成形加工と特性評価)

抄録

Polymer blends of PLLA and PBSC with different blend ratio were developed, and for each material, a fracture property, J_<Imax>, was measured using SENB specimen. It was found that J_<Imax> increased with increase of PBSC content up to 10wt% of PBSC. It was also shown that PLLA/PBSC has better fracture property than neat PLLA and PLLA/PCL blend. FE-SEM observation of phase morphology showed that the miscibility between PLLA and PBSC is better than PLLA and PCL. FE-SEM observation of fracture surface also exhibited that ductile deformation is dramatically increased by PBSC blending, resulting in the improvement of the fracture property.