Grafting of Amine-Functionalized Multiwall Carbon Nanotubes with Free Acid Anhydride in Carboxylic Acid Modified Epoxy

The novel approach was developed for grafting of amine-functionalized multiwall carbon nanotubes with carboxylic acid, modified epoxy resin containing free acid anhydride group, which gives enhanced grafting. The amine-functionalized multiwall carbon nanotubes was dispersed in benzyl alcohol by sonication at 60 degrees C and incorporated with modified epoxy. The amine functioned Multiwall carbon nanotubes were controlled loading of carboxylic acid, modified epoxy resin-grafted with amine-functionalized multiwalll carbon nanotube polymer composites. These were characterized by FTIR, SEM. TEM and NMR analysis. The improved mechanical properties observed for low amounts of MWCNT loading due to uniform dispersion.