Programmable Porous Polymers via Direct Bubble Writing with Surfactant-Free Inks.

ABSTRACT: Fabrication of macroporous polymers with functionally graded architecture or chemistry bears transformative potential in acoustic damping, energy storage materials, flexible electronics, and filtration but is hardly reachable with current processes. Here, we introduce thiol-ene chemistries in direct bubble writing, a recent technique for additive manufacturing of foams with locally controlled cell size, density, and macroscopic shape. Surfactant-free and solvent-free graded three-dimensional (3D) foams without drying-induced shrinkage were fabricated by direct bubble writing at an unparalleled ink viscosity of 410 cP (40 times higher than previous formulations). Functionalities including shape memory, high glass transition temperatures (>25 °C), and chemical gradients were demonstrated. Th

SUBMITTER: Amato DN 

PROVIDER: S-EPMC7503514 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature