filling process of nanotube structures, in particular carbon nanotubes.

摘要

The present invention relates to a process of at least partially filling nanotube structures with at least one filling material, characterised in that it comprises the following steps: A. having one or more nanotube structures (1); B. immersing said one or more nanotube structures (1) in a reaction bath comprising a solution including a first solvent and said at least one filling material, said at least one filling material being substantially soluble in said first solvent, said reaction bath being at a first temperature TO at which said solution is in liquid state; C. freezing said reaction bath, leading it to a second temperature T1 of freezing; D. sublimating said reaction bath, thus obtaining a first intermediate product; E. immersing said first intermediate product in a second solvent in which said at least one filling material is substantially insoluble, said second solvent being at a third temperature TO' at which said second solvent is in liquid state, thus obtaining a second intermediate product; F. carrying out a solvent extraction, by washing said second intermediate product with said first solvent, thus obtaining a third intermediate product; G. leading said third intermediate product to a fourth temperature T3 not higher than the minimum freezing temperature of said first and second solvents; and H. sublimating said first and second solvents.