It is discovered that biodegradable Poly (butylene succinate-co-butylene terephthalate) with BT content about 35 mol% can be an excellent heat-initiated 3D shape memory thermoplastic. Upon heating around 90 °C, it can quickly and fully recover its 3D shape from the temporary shape obtained by abused deformation (bending, twisting and stretching up to 500% elongation). The reversion ratio is >97% after over 35 cycle times. This thermoplastic material can potentially have many important applications and much better than those reported in literature in terms of its overall performance (large deformation, high reversion ratio and cycle times). The mechanism for the excellent memory of this thermoplastic can be attributed to its reversible nanostructures, confirmed with Wide Angle X-ray Diffraction (WAXD) and Small Angle X-ray Scattering (SAXS).

已经发现，具有约35mol％的BT含量的可生物降解的聚（丁二酸丁二酯-共-对苯二甲酸丁二酯）可以是优异的热引发的3D形状记忆热塑性塑料。在加热到90°C左右时，它可以从滥用变形（弯曲，扭曲和拉伸直至500％的伸长率）获得的临时形状中快速，完全恢复其3D形状。经过35个周期以上的时间后，回复率> 97％。这种热塑性材料可能具有许多重要的应用，并且就其整体性能（大变形，高回复率和循环时间）而言，要比文献中报道的要好得多。这种热塑性塑料出色记忆的机理可以归因于其可逆的纳米结构，这通过广角X射线衍射（WAXD）和小角X射线散射（SAXS）得以证实。