聚乳酸热老化和生物降解性能的影响研究

摘要

研究了添加氧化镁(MgO)对聚乳酸(PLA)性能的影响.结果表明:MgO的存在对PLA的结构影响不明显,使PLA结晶度降低,一定程度上抑制了PLA的老化,并且对PLA的降解有促进的作用.MgO对PLA力学性能下降有所抑制;同时也加快了PLA的降解速度.%The effect of MgO addition on properties of PLA was investigated. The results show that there is no patent effect on structure of PLA when MgO is added. The addition of MgO makes crystallinity of PLA reduce, inhibits thermal aging, and hastens the degradation rest of PLA. The reduction of mechanical properties is inhibited, and the degradation of PLA is fastened also by adding MgO.