TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The step (a): is carried out in the presence of the aprotic nucleophilic solvent of which the structure contains oxygen atom; comprises adding an alkaline polyaryl salt of formula (A+B-) to the carbon nanotubes. In the process, freezing step is carried out by slow immersion of the individual carbon nanotube solution in a thermostat medium at a temperature below the freezing temperature of the apolar aprotic solvent, or a sudden immersion of the individual carbon nanotube solution in liquid nitrogen. The aprotic polar solvent used in step (b) is dimethysulfoxide (DMSO), and sublimation step is carried out by thermostating the carbon nanotube solution in DMSO at a temperature of less than 18 degrees C. The composite material is obtained by a process comprising: (e) soaking the aerogel with a polymer, a mixture of polymer or a resin in liquid or solution form, or molten silicon; and (b2) mixing polymer solution, polymer mixture, or resin with the reduced individual carbon nanotube solution obtained in step (b).A = cation of alkaline ion; andB = anion of polyaromatic compound, preferably naphthalene, phenanthrene, biphenyl, anthracene, perylene, benzophenone, fluorenone, benzoquinone or anthraquinone.Preferred Components: The aprotic solvent is tetrahydrofuran (THF). The alkaline metal is sodium, lithium or potassium, and polyelectrolyte salt of carbon nanotubes having a ternary compound of formula (Na(THF)yCx), (Li(THF)yCx) or (K(THF)yCx). The aprotic polar solvent is sulfolane, dimethylsulfoxide, dimethylformamide, N-methylpyrrolidone or N-methylformamide. The nanotubes used in step (a) are monowall or multiwall carbon nanotubes. In the carbon nanotube aerogel, the volume occupied by the pores is 99% of the total volume of aerogel. The carbon nanotube aerogel has: an apparent density of 0.1-10 mg/cm3; and a specific surface area of 100-2000 m2/g.x = 6-200; andy = 0-8.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The polymer is polymethyl methacrylate. EXAMPLE - Naphthalene (100 mg) was placed in a flask to which potassium (30 mg) was added. The flask was heated to give the solution in dark green color. The obtained solution was poured while filtering to avoid excess of potassium solid on crude nanotubes (55 mg), and then the solution was kept in magnetic agitation at ambient temperature for 15 hours. The reaction mixture was filtered by Millipore type membrane. The obtained solid was rinsed several times with tetrahydrofuran (THF), and dried under vacuum at ambient temperature, to give nanotube. The obtained nanotube salt (40 mg) was subjected to magnetic agitation for 15 hours in dimethylsulfoxide (DMSO) at ambient temperature. Then the solution was centrifuged at 4000 rpm for 1 hour and decanted to the obtained solution containing reduced carbon nanotube (20mg). The solution (1-6 g) was placed in a glass test tube to isolate the contents of the test tube. The tube was filled with the solution under inert atmosphere, the valve was closed, and then the tube was removed from the chamber at inert atmosphere. Then the tube was optionally immersed in liquid nitrogen to freeze the solution, and then placed in a thermostate bath at a temperature lower than freezing solvent. The content of the tube was placed in vacuum, and further worked up to give individual carbon nanotube aerogel.