High thermal conductivity and superior thermal stability of amorphous PMDA/ODA nanofiber

The applications of polymers and their nanocomposites for thermal dissipation/management are limited by their low thermal conductivity and inferior thermal stability due to their disordered molecular chains. In this paper, we experimentally demonstrate the high thermal conductivity in individual suspended PMDA/ODA nanofibers which are fabricated by the typical electrospinning technology. More interestingly, the PMDA/ODA nanofibers possess high-temperature thermal stability up to T = 450 K, which is far beyond the hot spot temperature of integrated circuits. The observed high thermal conductivity and high-temperature thermal stability enable PMDA/ODA nanofibers to be a potential candidate for efficient thermal interface materials in the future applications.