Synergistic Toughening of Epoxy through Layered Poly(ether imide) with Dual-Scale Morphologies.

ABSTRACT: Toughness of epoxies is commonly improved by adding thermoplastic phases, which is achieved through dissolution and phase separation at the microscale. However, little is known about the synergistic effects of toughening phases on multiple scales. Therefore, here, we study the toughening of epoxies with layered poly(ether imide) (PEI) structures at the meso- to macroscale combined with gradient morphologies at the microscale originating from reaction-induced phase separation. Characteristic features of the gradient morphology were controlled by the curing temperature (120-200 °C), while the layered macro structure originates from facile scaffold manufacturing techniques with varying poly(ether imide) layer thicknesses (50-120 μm). The fracture toughness of the modified epoxy system is inve

SUBMITTER: Farooq U 

PROVIDER: S-EPMC10658453 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature