Anisotropic, lightweight, strong, and super thermally insulating nanowood with naturally aligned nanocellulose.

ABSTRACT: There has been a growing interest in thermal management materials due to the prevailing energy challenges and unfulfilled needs for thermal insulation applications. We demonstrate the exceptional thermal management capabilities of a large-scale, hierarchal alignment of cellulose nanofibrils directly fabricated from wood, hereafter referred to as nanowood. Nanowood exhibits anisotropic thermal properties with an extremely low thermal conductivity of 0.03 W/m·K in the transverse direction (perpendicular to the nanofibrils) and approximately two times higher thermal conductivity of 0.06 W/m·K in the axial direction due to the hierarchically aligned nanofibrils within the highly porous backbone. The anisotropy of the thermal conductivity enables efficient thermal dissipation along the axial di

SUBMITTER: Li T 

PROVIDER: S-EPMC5844708 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature