Biocompatible ۳D printing resins by low molecular weight poly(lactic acid) (PLA)

A novel biodegradable photocurable resin based on hydrolyzed polylactic acid (PLA) was developed for MSLA ۳D printing. PLA was depolymerized using methacrylic acid (MAA) to produce reactive oligomers, bearing acrylate groups to be incorporated in resin formulation. Structural analysis by NMR confirmed successful hydrolysis and functionalization, while GPC results showed a significant reduction in molecular weight, enhancing resin processability. XRD and SEM analyses demonstrated changes in crystallinity and surface morphology during formulation and photopolymerization. The approach offers a sustainable alternative for high-resolution medical ۳D printing.

کلیدواژه ها:

Biocompatible ، ۳D printing ، resins ، poly(lactic acid) ، PLA ، photocurable resin ، hydrolyzed PLA ، MSLA ، NMR ، GPC ، XRD ، SEM ، crystallinity ، photopolymerization ، medical applications