ポリ乳酸/ポリブチレンサクシネート系ポリマーブレンドの力学的特性・破壊特性に及ぼす熱処理の影響

概要

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Poly (lactic acid)/Poly (butylene succinate) (PLA/PBSU) polymer blends were fabricated to improve the fracture and biodegradable properties. Heat treatments were conducted on the specimens to improve the reduction in stiffness due to blending. The effects of heat treatment on the mechanical and fracture properties were discussed with the results of dynamic mechanical tests and fracture toughness tests, respectively. Storage modulus increased with increasing PLA contents. Heat treatments also improved the modulus because of the crystallization. The critical energy release rate, J_<cr> and the fracture energy, J_f, however, decreased with heat treatment. Excessive contents of PLA or PBSU significantly decreased J_<cr> and J_f.
社団法人日本機械学会の論文
2007-05-25