Effect of additive on fracture properties of PLA/PCL polymer blend
Effect of additive on fracture properties of PLA/PCL polymer blend
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添加剂对PLA/PCL聚合物共混物断裂性能的影响
DOI：
10.1299/kikaia.72.173
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Hideto Tsuji
中科院分区：
文献类型：
--
作者：
T. Takayama;M. Todo;K. Arakawa;Hideto Tsuji
在聚乳酸和聚己内酯的共混物中加入LTI以改善两种不同类型的生物降解聚合物的不相容性能。对聚乳酸/聚己内酯和聚乳酸/聚己内酯+LTI的断裂性能进行了评价和比较，以评价LTI添加剂对断裂行为的影响。LTI的加入有效地提高了材料的起裂J积分Jn和总断裂能Jf。用扫描电子显微镜对断口进行了观察，分析了断口机理。结果表明，LTI的加入使PCL球晶尺寸变小，从而抑制了孔洞的形成，从而改善了材料的断裂性能。
LTI was added to blends of PLA and PCL to improve the immiscibility of the two different kinds of biodegradable polymers. Fracture properties of PLA/PCL and PLA/PCL +LTI were evaluated and compared to assess the effect of LTI additive on the fracture behavior. Both the J-integral at initiation, Jin, and the total fracture energy, Jf, were improved effectively due to LTI addition. Fracture surfaces were also examined using SEM to characterize fracture mechanism. It was confirmed that the size of PCL spherulites became smaller by adding LTI, and therefore void formation was inhibited, resulting in the improvement of the fracture properties.