期刊
POLYMER ENGINEERING AND SCIENCE
卷 63, 期 7, 页码 2084-2092出版社
WILEY
DOI: 10.1002/pen.26347
关键词
compatibility; shape memory performance; thermal stability; toughness
In this research, a tough polymer polycaprolactone (PCL) was added to polylactic acid (PLA) to improve its toughness. A compatibilizer of glycidyl methacrylate grafted PLA (PLA-g-GMA) was produced to enhance the compatibility of the PLA/PCL blend. The addition of the compatibilizer greatly improved the toughness and shape memory performance of the PLA/PCL blend, providing a new strategy to modify PLA.
To improve the toughness of polylactic acid (PLA), in this research, a tough polymer polycaprolactone (PCL) was combined with PLA to prepare blends, and a compatibilizer of glycidyl methacrylate grafted PLA (PLA-g-GMA) was produced to enhance the compatibility of PLA/PCL blend. Compared with PLA/PCL blend, the compatibilized blend exhibited a lower melting temperature and greater thermal stability. The tensile test indicates that the addition of compatibilizer greatly improved the toughness of the PLA/PCL blend. Particularly, the elongation at break of PLA/PCL blend with 6 wt% PLA-g-GMA increased to 370% and reached about 66 times of neat PLA. In addition, compatibilized blends have good shape memory performance. The research provides a simple and feasible method to overcome the brittleness of PLA, supplying a new strategy to modify PLA.
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