The zinc oxide (ZnO)-reinforced polylactic acid (PLA) matrix has established shape memory characteristics. But hitherto little has been reported on two-way programmed 3D-printed ZnO-reinforced PLA functional prototypes (prepared on commercial fused deposition modelling (FDM) set-up). This article reports the effect of 3D printing process parameters on tensile, thermal, morphological and two-way programmed shape memory characteristics of ZnO-reinforced PLA-based functional prototypes. It has been ascertained that the maximum strength at peak (14.32 MPa) and maximum strength at break (12.89 MPa) were observed for sample printed at 80% infill density, four number of perimeters with triangular pattern. Maximum Young’s modulus (233.68 MPa) was observed for samples printed at 80% infill density and three perimeters with honeycomb pattern. Also, the maximum modulus of toughness (0.883 MPa) was observed in case of sample printed at 80% infill density, five perimeters with rectilinear pattern. Further based upon thermal analysis using differential scanning calorimetry, it has been ascertained that there is no significant effect of FDM process parameters on normalized heat capacity of functional prototype. As regards to two-way programmed specimens, it has been observed that the porosity of functional prototypes increase with 30 min immersion in water as stimulus at 70°C and it again decreases (regain) after 30 min exposure at atmospheric temperature. Contrary to this, the samples’ porosity values decrease with 30 min immersion in water at 10^°C and regain after 30 min exposure at atmospheric temperature. Further some effect of shape memory has been noticed on functional prototypes volume and weight at two different temperatures.

氧化锌（ZnO）增强的聚乳酸（PLA）基体具有确定的形状记忆特性。但是，迄今为止，关于双向编程的3D打印的ZnO增强的PLA功能原型（在商业熔融沉积建模（FDM）装置上制备）的报道很少。本文报告了3D打印工艺参数对基于ZnO增强的PLA功能原型的拉伸，热，形态和双向编程形状记忆特性的影响。已确定，对于以80％填充密度，四个周长的三角形图案打印的样品，观察到了最大峰值强度（14.32 MPa）和最大断裂强度（12.89 MPa）。对于以80％填充密度和三个带有蜂窝图案的周长打印的样品，观察到最大杨氏模量（233.68 MPa）。也，在以80％填充密度，五个周长以直线图案打印的样品的情况下，观察到最大韧性模量（0.883 MPa）。进一步基于使用差示扫描量热法的热分析，已经确定FDM工艺参数对功能原型的归一化热容量没有显着影响。对于双向程序化的试样，已经观察到功能性原型的孔隙度在70°C的刺激下于水中浸泡30分钟后会增加，而在大气中暴露30分钟后其孔隙率会再次降低（恢复）。与此相反，将样品的孔隙率值在10°C的水中浸泡30分钟会降低 进一步基于使用差示扫描量热法的热分析，已经确定FDM工艺参数对功能原型的归一化热容量没有显着影响。关于双向程序化样品，已经观察到功能性原型的孔隙度在70°C的刺激下于水中浸泡30分钟会增加，并在暴露于大气温度30分钟后再次降低（恢复）。与此相反，将样品的孔隙率值在10°C的水中浸泡30分钟会降低 进一步基于使用差示扫描量热法的热分析，已经确定FDM工艺参数对功能原型的归一化热容量没有显着影响。关于双向程序化样品，已经观察到功能性原型的孔隙度在70°C的刺激下于水中浸泡30分钟会增加，并在暴露于大气温度30分钟后再次降低（恢复）。与此相反，将样品的孔隙率值在10°C的水中浸泡30分钟会降低 已经观察到，在70°C的刺激下，功能性原型的孔隙度随着在水中浸泡30分钟而增加，并且在大气温度下暴露30分钟后，孔隙率再次降低（恢复）。与此相反，将样品的孔隙率值在10°C的水中浸泡30分钟会降低 已经观察到，在70°C的刺激下，功能性原型的孔隙率随着在水中浸泡30分钟而增加，并且在大气温度下暴露30分钟后，孔隙率再次降低（恢复）。与此相反，将样品的孔隙率值在10°C的水中浸泡30分钟会降低^° C和30分钟后，曝光在大气温度下恢复。此外，在两个不同温度下，形状记忆对功能原型的体积和重量也产生了一些影响。