A computational prediction of total carbo-merization on single-walled carbon nanotubes

► We model carbo-merization of single-walled carbon nanotubes (C-SWCNTs). ► We examine the stability, the mechanical and the electronic properties of these nanotubes. ► The calculated Young.'s moduli of C-SWCNTs are smaller than those of SWCNTs. ► The zigzag C-SWCNTs have higher mobility than the corresponding SWCNTs and show periodicity on tube diameters.