Patent ID: 9181099
Filing Date: 2015-11-10
Classification: B82Y,C01B

Abstract:
1. A method of processing bundles of carbon nanotubes (CNTs), comprising the steps of: (a) unbundling bundles of carbon nanotubes (CNTs) into individual semiconducting CNTs, individual metallic CNTs, and remaining CNT bundles containing both semiconducting and metallic CNTs; (b) carrying out a processing step that at least partially separates the individual metallic CNTs produced in step (a) from the individual semiconducting CNTs produced in step (a); and (c) carrying out a processing step that at least partially separates one or more of the remaining CNT bundles produced in step (a) from the individual metallic and/or semiconducting CNTs produced in step (a), wherein step (a) comprises the step of dispersing the individual CNTs and the remaining CNT bundles in a solution using one or more surfactants, the method further comprising the step of removing an antifoam agent or dispersion assisting compound from the solution.