1 research outputs found
Three-Dimensional Printing of Cytocompatible, Thermally Conductive Hexagonal Boron Nitride Nanocomposites
Hexagonal
boron nitride (hBN) is a thermally conductive yet electrically
insulating two-dimensional layered nanomaterial that has attracted
significant attention as a dielectric for high-performance electronics
in addition to playing a central role in thermal management applications.
Here, we report a high-content hBN-polymer nanocomposite ink, which
can be 3D printed to form mechanically robust, self-supporting constructs.
In particular, hBN is dispersed in polyÂ(lactic-<i>co</i>-glycolic acid) and 3D printed at room temperature through an extrusion
process to form complex architectures. These constructs can be 3D
printed with a composition of up to 60% vol hBN (solids content) while
maintaining high mechanical flexibility and stretchability. The presence
of hBN within the matrix results in enhanced thermal conductivity
(up to 2.1 W K<sup>–1</sup> m<sup>–1</sup>) directly
after 3D printing with minimal postprocessing steps, suggesting utility
in thermal management applications. Furthermore, the constructs show
high levels of cytocompatibility, making them suitable for use in
the field of printed bioelectronics