Study on the effect of hexamethylene diamine functionalized graphene oxide on the curing kinetics of epoxy nanocomposites

Polyhedral oligomeric silsesquioxanes/carbon nanotube/carbon fiber multiscale composite: Influence of a novel hierarchical reinforcement on the interfacial properties

“…The negative inductive effect of the chlorine atom in the COCl group result in a shift in the stretching vibrations of C O groups (1720 cm −1 ) to a higher wave number. The nature of the interaction between CF-COCl and CNTs-NH 2 is confirmed by the appearance of peaks at 1650 cm −1 (C O stretching of amide group), 1530 cm −1 (N H bending of amide group), 1100 cm −1 (C N stretching) and intense peak at 810 cm −1 (N H wagging vibration of amine group) along with a broad band at 3450 cm −1 (N H stretching) [35]. The wave number of 2930 cm −1 , 2850 cm −1 was the main features of the stretching vibration of CH 2 corresponding to ( CH asymmetric) and ( CH symmetric) groups, which demonstrated the presence of ethylene diamine on the CNTs surface.…”

Epoxy/p‐phenylenediamine functionalized graphene oxide composites and evaluation of their fracture toughness and tensile properties

“…3 Different amines have successfully functionalized graphene; these include ethylenediamine 16 and hexamethylene diamine. 17 Aromatic amines, such as p-phenylenediamine (pPDA), were attached to graphene and applied to supercapacitors, 18 dopamine detection, 19 and gas sensors. 20 pPDA is expected to prevent graphene sheets from agglomeration because of its bulky aromatic structure.…”

Water-dispersible triethylenetetramine-functionalized graphene: Preparation, characterization and application as an amperometric glucose sensor

“…For biomedical applications, it is extremely important that prepared graphene is water-dispersible. This property is achievable by the appropriate surface functionalization of graphene through covalent and noncovalent methods [14][15][16][17]. The covalently-functionalized graphene is more stable compared with the noncovalently-modified graphene, which is functionalized through π-π interactions and van der Waals interactions.…”