Thermal and mechanical properties of polylactide toughened with a butyl acrylate-ethyl acrylate-glycidyl methacrylate copolymer
Thermal and mechanical properties of polylactide toughened with a butyl acrylate-ethyl acrylate-glycidyl methacrylate copolymer
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DOI：
10.1007/s10118-013-1350-4
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发表时间：
2013-10
影响因子：
4.3
通讯作者：
Yan-ping Hao;Huanhuan Ge;Lijing Han;Huiliang Zhang;Li-song Dong;Shulin Sun
中科院分区：
文献类型：
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作者：
Yan-ping Hao;Huanhuan Ge;Lijing Han;Huiliang Zhang;Li-song Dong;Shulin Sun
在这项工作中，将特定的聚丙交酯（PLA）4032D与新型增韧剂：丙烯酸丁酯（BA）、丙烯酸乙酯（EA）和甲基丙烯酸缩水甘油酯（GMA）共聚物（BA-EA-GMA）熔融混合。 DMA 测试表明 PLA/BA-EA-GMA 共混物是部分混溶的。随着BA-EA-GMA含量的增加，PLA的结晶度增加，而冷结晶温度则向更高的温度转移。 SEM 显微照片显示 PLA/BA-EA-GMA 共混物具有良好的分散性，这种现象与其较高的冲击强度非常吻合。结果表明，与纯PLA相比，BA-EA-GMA的添加增强了PLA/BA-EA-GMA共混物的柔韧性。冲击强度从纯 PLA 的 3.4 kJ/m2 更改为 80/20 PLA/BA-EA-GMA 共混物的 29.6 kJ/m2。
In this work, a specific polylactide (PLA) 4032D was melt-mixed with a new toughener: butyl acrylate (BA), ethyl acrylate (EA) and glycidyl methacrylate (GMA) copolymer (BA-EA-GMA). DMA tests showed that PLA/BA-EA-GMA blends were partially miscible. The degree of crystallinity of PLA increased while the cold crystallization temperature shifted to higher temperatures with increasing BA-EA-GMA content. The SEM micrographs showed that PLA/BA-EA-GMA blends had a good dispersion and this phenomenon was in good agreement with their higher impact strength. The result showed that the adding of BA-EA-GMA has enhanced the flexibility of PLA/BA-EA-GMA blends as compared with pure PLA. The impact strength was changed from 3.4 kJ/m2for pure PLA to 29.6 kJ/m2for 80/20 PLA/BA-EA-GMA blend.