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About this Abstract
Meeting 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Symposium 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Presentation Title Diffusion Study on Highly Porous 3D Printed Structures Made Using Vat Photopolymerization and In-Situ Phase Separation
Author(s) Rachel Lamb, Nikitha Garlapati, Xiangyu Gao, Makayla Makuvise, Michael Cullinan
On-Site Speaker (Planned) Nikitha Garlapati
Abstract Scope Absorption and release of concentrated solutions are important concepts across many industries, from small implants for pharmaceutical drug delivery to larger systems for recycling rare materials. Current commercial systems built with traditional manufacturing approaches are limited in their ability to selectively optimize individualized solutions. Using a combination of vat photopolymerization and photopolymer-induced phase separation (PIPS), porous polymer membranes are printed with controllable porosity ranges, enabling improved diffusion-based mass transport. This study highlights the diffusion properties of 25 to 50µm thick membranes printed with varying pore sizes measured using a Franz side-by-side diffusion cell and UV-Vis spectroscopy. These diffusion results are correlated with scanning electron microscope (SEM) images of surface pores for each resin composition. Recommendations are provided for future structures and printing parameters to achieve ideal diffusion properties.
Proceedings Inclusion? Undecided

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