| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1522712 | Materials Chemistry and Physics | 2013 | 5 Pages |
We demonstrated that the orientation of unmodified BN nanosheets can be controlled in a polymer matrix either perpendicular or parallel to the nanocomposite film surface with high anisotropy triggered by a rotating superconducting magnetic field (10T) while the prepolymer suspension of polyepoxide was cross-linked. The resulting polymer nanocomposite had outstanding thermal anisotropy, and the increased thermal diffusivity was proportional to the anisotropic orientation of the BN nanosheet. This research provides a method to effectively control diamagnetic 1D or 2D nanofiller particles in polymer-based nanocomposites, and may provide enhanced dielectric thermal interface materials for the semiconductor industry.
Graphical abstractThermal anisotropy of epoxy resin based nanocomposites with orientation of unmodified BN nanosheets, induced by a rotating high magnetic field.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Fabrication of thermally anisotropic polyepoxide/BN nanosheet nanocomposites films. ► Controlled assembly of diamagnetic fillers in polymer under rotating magnetic fields. ► High thermal anisotropy of composites without necessitating modification of the BN.
