Effect of Calcium Phosphate on Tensile and Rheological Properties of Polylactic Acid (PLA)

Abstract

From the last few decades, biodegradable composites have become best alternatives over the petro based polymer because these degrade in the simple compound in the natural environments. Among the available biodegradable polymers, polylactic acid (PLA) is more popular due to its biocompatibility and mechanical properties, that can be used in the biomedical application, such as sutures, bone and ligament fixation screws etc. In this study, synthesis of PLA was performed by ring opening polymerization and Calcium phosphate/Polylactic acid (PLA) bio-composites were prepared by melt mixing technique. Tensile properties of these composites are investigated to assess its feasibility in biomedical and food packaging application.

Polylactic acid nanocomposites for biomedical applications: effects of calcium phosphate, and magnesium phosphate nanoparticles concentration

“…In the present study, the filler's agglomeration was significantly absent to 15% CaP content due to ultrasonic vibration. It seems that vacuum eliminates void formation inside the sample, as observed in the previous work [31], which also contributes to enhancing PLA/CaP nanocomposite's tensile strength. It is also observed that the tensile strength of the nanocomposite linearly increases by incorporation of CaP nanoparticles up to 15% beyond which, starts decreasing abruptly.…”