High Glass Transition Epoxy Resins from Biobased Phloroglucinol and Unmodified Kraft Lignin.

ABSTRACT: This study investigates the development of high-performance epoxy resins derived from potentially biobased phloroglucinol triglycidyl ether (TGPh) and unmodified Kraft lignin (KL), aiming to create thermoset materials from renewable resources. Two types of KL, sourced from hardwood and softwood, were incorporated into the TGPh matrix at high loadings of 30% wt. to achieve materials with potentially ∼95% renewable content. The resulting epoxy resins were characterized using thermally resolved Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA), tensile testing, and scanning electron microscopy (SEM). All samples exhibited >97% gel content after 3 days in various solvents, indicating comp

SUBMITTER: Janesch J 

PROVIDER: S-EPMC12631697 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature