Additive manufacture of lightly crosslinked semicrystalline thiol-enes for enhanced mechanical performance.

ABSTRACT: Photopolymerizable semicrystalline thermoplastics resulting from thiol-ene polymerizations were formed via fast polymerizations and achieved excellent mechanical properties. These materials have been shown to produce materials desirable for additive manufacturing (3D printing), especially for recyclable printing and investment casting. However, while well-resolved prints were previously achieved with the thiol-ene thermoplastics, the remarkable elongation at break (ϵ_max) and toughness (T) attained in bulk were not realized for 3D printed components (ϵ_max,bulk ~ 790%, T_bulk ~ 102 MJ m^-3 vs. ϵ_max,print < 5%, T_print < 0.5 MJ m^-3). In this work, small concentrations (5-10 mol%) of a crosslinker were added to the origi

SUBMITTER: Childress KK 

PROVIDER: S-EPMC6941418 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature