Novel composites based on PLA, chitosan and keratin was obtained via blend preparation. The goal of this
contributionwas to evaluatemechanical and in vitro behavior of the composites. The results point out composites
with improved Young modulus and decreased tensile strength, significant increase in hardness (compared
to PLA) and a good uptake of the surface properties. Biological assessments using human osteosarcoma cell line
on these composites indicate a good viability/proliferation outcome. Hence preliminary results regarding
mechanical behavior and in vitro osteoblast response suggest that these composites might have prospective
application in medical field.