Shock Wave-Assisted Exfoliation of 2D-Material-Based Polymer Nanocomposites: A Breakthrough in Nanotechnology

Abstract

Idealized exfoliated polymer nanocomposites occur as a consequence of extensive interpenetration of polymers within the galleries of the layered structure, due to the substantial enhancement in d-spacing amidst the layers, curtailed by van der Waals forces acting within the structures. The present review provides an insight into the fabrication of exfoliated polymer nanocomposites via the delamination of layered 2D materials, through the application of high-temperature and pressure shock waves of Mach number of the order of 6−7, engendered within shock tubes to impersonate the unfeigned detonations cautiously, accompanied by the integration of these delaminated materials within polymeric matrices through various techniques. It also highlights the conventionally employed techniques for the exfoliation of layered materials along with an emphasis on the cutting-edge shock wave exfoliation of 2D materials delineating the advantages of the latter over the former methodologies along with the applications of exfoliated polymer nanocomposites across different sectors.

Hexagonal boron nitride nanosheets: Fabrication, thermal properties and application in polymers

“…Compared with other exfoliation methods, the shock wave exfoliation method can avoid the edge defects caused by the exfoliating process to a greater extent, shorten the exfoliating time, and improve the yield of boron nitride nanosheets. 36,37 Chemical vapor deposition BNNS has excellent thermal stability, excellent chemical stability and strong mechanical strength, making it an ideal substrate for the preparation of other two-dimensional materials. In particular, BN has a high degree of insulating properties and is seen as an ideal substrate and dielectric material based on two-dimensional materials such as fieldeffect transistors.…”