| 초록 |
Under ultrasound irradiation in the polymeric solutions, the polymer chains are severed preferentially near the middle of the chains, resulting in polymeric radicals at the ends. It has been known that CNTs have a radical scavenging capacity. With this background, ultrasound was used to graft severed polymer chains having radicals on the surface of CNTs in aqueous solution. This simple “grafting onto” methology was successfully explored. In this work, multiwalled carbon nanotubes (MWCNTs) were modified with water soluble polymers, lignin and cellulose. Using radical scavenging effect of MWCNT, lignin and cellulose were surface-grafted onto MWCNT by simple sonication. The grafting of them and dispersion stability of modified MWCNTs in the water and TPEE sheets were thoroughly investigated. And then the physical and electrical properties of modified MWCNT/TPEE composites were also studied. |
