Sustainable textile fibers of bioderived polylactide/poly(pentamethylene 2, <scp>5‐furanoate</scp> ) blends

Furanoate polyesters are emerging as promising bioderived polymers that could replace petrochemical-derived in several applications, for example, the textile field. Here, sustainable and fully fibers wet-spun by blending poly(lactic acid) (PLA) poly(pentamethylene 2,5-furanoate) (PPeF), with up to 50 wt% of PPeF. PLA/PPeF blends result immiscible, PPeF domains homogeneously distributed within PLA matrix, shown scanning electron micrographs. The immiscibility is confirmed differential calorimetry, glass transition temperature unaffected poor adhesion between responsible decrease stress at break elongation from 30.1 MPa 127%, fibers, 3.5 1.9%, high amounts. However, addition strongly decreases PLA's tendency absorb water retain processing solvents, showing a mass loss 3.1% 1% containing PPeF, thereby addressing one main drawbacks PLA. These results, although preliminary, offer new directions future works on innovative based furanoate polyesters.