Biomaterial nanocomposite derived from modification of polilactic acid (PLA) with cellulose nanofibers (CNF)

C.A. RODRÍGUEZ RAMÍREZ ; M. LUONG; N.B. D´ACCORSO; N.L. GARCIA

Workshop; III Workshop de Polímeros Biodegradables y Biocompuestos; 2018

A new bio-material obtained from the chemical modification of a national low molecular weight polylactic acid (LMWPLA) synthesized in our laboratory with cellulose nanofibers is presented, using a synthetic route that consists of three reaction stages. The first one is the protection of the hydroxyl groups of the LMWPLA through a benzoylation reaction (PLABz), the second step involves the activation of carboxyl groups with thionyl chloride, and these latter groups react with the cellulose nanofibers (LMW-PLACEL) in the third stage. This new polymer will serve to be compatible with a hydrophobic PLA of high molecular weight (HMWPLA) to be use in the packaging manufacturing.