Top-Down Approach Making Anisotropic Cellulose Aerogels as Universal Substrates for Multifunctionalization.

ABSTRACT: Highly porous, strong aerogels with anisotropic structural properties are of great interest for multifunctional materials for applications including insulators in buildings, filters for oil cleanup, electrical storage devices, etc. Contemporary aerogels are mostly extracted from fossil resources and synthesized from bottom-up techniques, often requiring additional strategies to obtain high anisotropy. In this work, a universal approach to prepare porous, strong, anisotropic aerogels is presented through exploiting the natural hierarchical and anisotropic structure of wood. The preparation comprises nanoscale removal of lignin, followed by dissolution-regeneration of nanofibers, leading to enhanced cell wall porosity with nanofibrillated networks occupying the pore space in the cellular woo

SUBMITTER: Garemark J 

PROVIDER: S-EPMC7497664 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature