Multi-material 3D printing with FFF and SLA

We propose a solution to achieve a strong interfacial connection between FFF-printed materials and SLA-printed materials by utilizing an ester exchange reaction. Common FFF materials such as PETG and PLA contain an ester structure that can undergo ester exchange reactions with other alcohols in the presence of a strong base such as Triazabicyclodecene (TBD) and alter the original cross-linked structure. We can leverage this property by incorporating monomers containing hydroxyl groups into the resin of SLA and adding a certain concentration of alkali.

Our goal is to develop a multi-material printing technology that combines FFF and SLA methods, which we anticipate will be useful for the production of multi-material soft robots, as well as other applications, including the manufacturing of microfluidic chips using engineering materials. By achieving a strong interfacial bond between FFF-printed and SLA-printed materials, we aim to enable the production of multi-material parts with varying mechanical and physical properties. This technology has the potential to revolutionize the field of soft robotics, where the ability to combine materials with different elasticity and hardness can lead to the creation of complex and functional robotic systems.

Faculty Supervisor:

Garrett Melenka

Student:

Partner:

Albert-Ludwigs-Universität Freiburg

Discipline:

Engineering

Sector:

Education

University:

York University

Program: