Experimental study demonstrates enhanced barrier properties in paper coated with polycaprolactone-chitosan blends, highlighting compostable packaging potential.
Key Points
To develop solvent-free waterborne coatings from immiscible polycaprolactone and chitosan blends and evaluate their barrier and surface properties on paper and biopolymer substrates.
Formulated stable aqueous polymer dispersions of polycaprolactone (PCL) and chitosan (CS) using an emulsification–evaporation technique without organic solvents in the final system.
Applied coatings onto two paper substrates and a poly(lactic acid) (PLA) film to evaluate oxygen permeability, contact angles, thermal post-treatment, and double coating effects.
Decreased oxygen permeability by up to 98% on paper substrates and 69% on poly(lactic acid) film relative to uncoated controls.
Enhanced paper surface barrier properties, increasing water contact angle from 56° to 99° and oil contact angle from 17° to 67°.
Cite This Study
Obando-Garzón et al. (2026) studied this question.