Flexible and ultrathin electrospun regenerate cellulose nanofibers and d-Ti3C2Tx (MXene) composite film for electromagnetic interference shielding

摘要

Ultrathin and flexible electromagnetic interference (EMI) shielding materials are required to deal with increasingly serious radiation pollution. Herein, 2D ultrathin Ti3C2Tx nanosheets, a kind of MXenes, possess metallic electrical conductivity and hydrophilic surfaces. 2D Ti3C2Tx are considered as a promising alternative to graphene for providing excellent EMI shielding properties. Flexible delaminated Ti3C2Tx/electrospun regenerate cellulose nanofibers (d-Ti3C2Tx/r-CNFs) composite films with EMI shielding properties were fabricated via a facile vacuum-assisted filtration method. The obtained dTi(3)C(2)T(x)/r-CNFs composite film with 15 mm of the thickness of d-Ti3C2Tx coating shows excellent EMI SE (up to 42.7 dB) at the frequency of 2-18 GHz. The d-Ti3C2Tx/r-CNFs composite films can be potentially used as flexible EMI shielding materials. (c) 2019 Elsevier B.V. All rights reserved.