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Polycarbosilane particles were dispersed in a novolac-phenolic resin matrix, and the resulting polymer blend was meltspun, stabilized and heat-treated at 1000•Ž or 1200•Ž for 1 h in an inert atmosphere. The heat-treated blend fibers were oxidized in nitric acid solution to remove the carbon matrix and the nanofibers thus released were collected by filtration. heated at a higher temperature.

Carbon nanotubes CNTs 1 have attracted the attention of researchers to a considerable extent owing to their peculiar structures and possible applications in various fields, such as electronics, and also as nanocomposites and catalyst supports. These materials have been prepared by arc discharge 2 , laser ablation 3 , 4 , catalytic CVD CCVD 5 , and template methods 6 . The CCVD method is recognized