Fully biobased composite made with <scp>epoxidized‐lignin</scp> , reinforced with bamboo fibers

In this study, we entirely replaced petroleum-based bisphenol A (BPA) with unmodified kraft softwood lignin in epoxy resin formulation. Epoxidized was prepared by reacting biobased epichlorohydrin (ECH) made from glycerol, and the formation of epoxide rings confirmed measuring content epoxidized using titration Fourier-transform infrared spectroscopy (FTIR). fully then mixing a curing agent derived chew nutshell (from Cardolite Co.). Pre-impregnated composite sheets were fabricated impregnating unidirectional bamboo fibers developed water-dispersion resin. The properties samples measured dynamic mechanical analyzer (DMA), scanning electron microscope (SEM), universal testing machine. flexural strength lignin-based found to be 36% lower (14 MPa) compared commercial (22 MPa). However, when added biocomposite (containing 25 wt.%), higher (116 observed, representing an increase 11% EPON fiber (104 Similarly, addition resulted modulus 1255% 0.42 5.69 GPa), while increased only 736% 0.58 4.85 GPa). This attributed compatibility lignin, which is known act as natural glue plants.