Influence of Reactive Chain Extension on the Properties of 3D Printed Poly(Lactic Acid) Constructs.

ABSTRACT: Fused deposition modeling (FDM) is currently the most popular 3D printing method, where thermoplastic polymers are predominantly used. Among them, the biobased poly(lactic acid) (PLA) governs the FDM filament market, with demand higher than supply, since not all grades of PLA are suitable for FDM filament production. In this work, the effect of a food grade chain extender (Joncryl ADR® 4400) on the physicochemical properties and printability of PLA marketed for injection molding was examined. All samples were characterized in terms of their mechanical and thermal properties. The microstructure of the filaments and 3D-printed fractured surfaces following tensile testing were examined with optical and scanning electron microscopy, respectively. Molecular weight and complex viscosity increase

SUBMITTER: Grigora ME 

PROVIDER: S-EPMC8123025 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature