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为了适应种类繁多的生物材料的成形,开发了生物材料快速成形开放平台。该平台基于快速成形技术,采用材料溶解—喷射堆积—低温固化—溶剂冻干的技术路线,可以对多种高分子或高分子基复合生物材料进行任意复杂的三维形状的成形。喷头模块、温度控制模块、运动控制模块是平台的核心部分。平台采用开放性设计,喷头被设计成标准化的组件。通过对喷头温度和成形室温度的控制,实现了对材料的相变和热致相分离过程的控制。研究结果表明,该平台能成功地完成脂肪族聚酯、聚醚酯弹性体等多种生物材料的成形。
In order to adapt to a wide range of biomaterials, an open platform for rapid prototyping of biomaterials was developed. Based on the rapid prototyping technology, the platform adopts the technical route of material dissolving-jet deposition-low temperature solidification-solvent lyophilization, and can perform any complicated three-dimensional shape forming on a variety of macromolecular or polymer-based composite biomaterials. Sprinkler module, temperature control module, motion control module is the core of the platform. The platform features an open design and the printhead is designed as a standardized component. By controlling the nozzle temperature and the temperature in the forming chamber, the control of the material phase transformation and the thermally induced phase separation is realized. The results show that the platform can successfully form a variety of biomaterials such as aliphatic polyester and polyether ester elastomer.