Characterization of polycaprolactone/Ti3C2TX MXene nanocomposites fabricated via injection molding

Polycaprolactone (PCL) has garnered attention as one of the most important biodegradable polymers due to its biocompatibility, tissue compatibility, and high flexibility. To enhance its applicability in bioelectronic materials, the low conductivity and mechanical properties of the polymer need to be improved. In this study, polycaprolactone-based nanocomposites containing MXene particles were prepared by using injection molding. The hydrophilic feature of MXene results in poor dispersion in non-polar organic solvents and low compatibility with hydrophobic polymers. The MXene particles were subjected to surface treatment to achieve the strong interfacial adhesion between the filler particles and the polymer matrix, as well as the excellent dispersion of the filler. Physical and chemical characteristics of the nanocomposites analyzed. Furthermore, rheological and electrical analyses of the polymer melt were conducted to examine the internal structure of the MXene-embedded polymer nanocomposites. The results showed that the addition of a small amount, specifically 0.5 wt%, led to a significant improvement in both the mechanical properties and the electrical conductivity. In addition, the flow and deformation behavior of the molten polymer in the cavity were evaluated through injection molding simulation.