Production of ZnO/Chitosan/PLA polymer matrix composites through۳D printing additive manufacturing method and investigation of theircrystallinity, microstructural and optical properties

In the present study, zinc oxide nanoparticles were obtained by combustion. Zinc nitratesalt was used as oxidizer and urea was used as fuel. The structure and particle size of thesynthesized oxide surface powders were examined by X-ray diffraction (XRD) andscanning electron microscopy (SEM). Zinc oxide doped with europium oxide wascalcined at ۸۰۰ ˚C, were added to polylactic acid (PLA) and chitosan polymers via ۳Dprinting, fused deposition modeling (FDM) to fabricate composite scaffolds. Theproperties, morphology and particle size of the scaffolds were investigated through theemployment of XRD, FESEM and EDX analysis and the optical properties of zinc oxidewere scrutinized by photoluminescence analysis (PL). In order to investigate thebiomaterial applications of the produced composite, the samples were subjected tobiocompatibility testing in simulated body fluid (SBF). The results of the analyzesshowed that the production of zinc oxide nanoparticles with hexagonal structure, highporosity and narrow distribution is possible via the use of urea. The most properscaffolds were obtained through FDM at ۲۰۵ ˚C and speed of۱۰ mm /sec

کلیدواژه ها:

Combustion Synthesis ، PLA / Zno / Chitosan Composite ، ۳D Printer ، Zinc Oxide ، Urea ، Optical Properties.