High-concentration lignin biocomposites with low-melting point biopolyamide

Blending polymers with a high concentration of bio-based fillers is one the solutions that not only reduces dependency on petroleum-based feedstocks but can also significantly decrease carbon footprint. In current study, n-octadecyl isocyanate (ODI) molecules were grafted lignin particles to render them compatible novel copolyamide matrix, which was successfully synthesized through copolymerization between petroleum- and monomers. Different concentrations surface-modified melt-blended low-melting point copolyimide, properties developed biocomposites being thoroughly studied. The SEM imaging revealed homogeneously dispersed into polymer matrix for all loading levels without any clear evidence particle agglomeration, phase separation, or voids formation, proposing excellent compatibility components arose from successful surface modification process. Furthermore, mechanical improved. For instance, yield stress tensile modulus enhanced by 50% 200% at biocomposite 50 wt% filler content, considerable change in strain. dynamic analysis, as well rheology measurements, further confirmed uniform dispersion their copolymer within storage considerably improved upon increase content. Overall, our findings strongly suggest these newly green content up 80% are attractive candidates substituting plastics demanded applications.