Enhanced interfacial thermal transport across graphene–polymer interfaces by grafting polymer chains

Interfacial thermal transport and structural preferences in carbon nanotube–polyamide-6,6 nanocomposites: how important are chemical functionalization effects?

“…25,[44][45][46][47][48][49][50][51] Results from analytical models based on an effective medium theory, 44,51 a micromechanical modeling approach 45,46 as well as atomistic simulations 25,[47][48][49][50][51] have emphasized that functionalized CNTs in a polymer matrix modify the thermal properties of the interfacial polymer phase relative to l of its bare parent system. 25,[44][45][46][47][48][49][50][51] Results from analytical models based on an effective medium theory, 44,51 a micromechanical modeling approach 45,46 as well as atomistic simulations 25,[47][48][49][50][51] have emphasized that functionalized CNTs in a polymer matrix modify the thermal properties of the interfacial polymer phase relative to l of its bare parent system.…”

“…44,48 In a micromechanical approach, Seidel and Lagoudas 45 have shown that the functionalization of the CNT surface (i.e., the interface coupling between the reinforcing component and the matrix, as well as the CNT hollowness, see above) has significant effects on the thermal conductivity of the composite. The influence of the grafted chain length on the interfacial thermal transport in graphene-polymer nanocomposites has been studied in a very recent work of Wang et al 51 Possibilities to enhance the interfacial thermal conductivity by CNT surfaces that have different chemical compositions of the grafted chains as well as different grafted chain lengths and grafting densities, however, have not been considered until now. Luo and Lloyd 49 investigated the thermal properties of graphene/graphite-paraffin systems by MD simulations.…”

Tailoring the interface in graphene/thermoset polymer composites: A critical review

“…[46][47][48][49][50][51][52] GO has been functionalized with molecules and macromolecules covalently or non-covalently depending on the application. Covalent functionalization involves formation of a strong chemical bond between graphene and polymer, while non-covalent functionalization involves physical interaction and does not induce defects sites unlike covalent modification.…”

Investigating thermal conductivities of functionalized graphene and graphene/epoxy nanocomposites

“…In addition, direct characterization of the ITC of the graphene/matrix interface is essential for understanding the mechanism of interfacial thermal transport and the enhancement of nanocomposite thermal conductivity. Therefore, the influences of functional groups on the ITC have been investigated using molecular dynamics (MD) simulation [9][10][11][12][13]. Wang et al [9] examined the ITC in graphene/polyethylene (PE) nanocomposites and indicated that grafting PE chains to the graphene surface can effectively improve the ITC as well as the vibrational coupling between the graphene and polymer.…”

“…Therefore, the influences of functional groups on the ITC have been investigated using molecular dynamics (MD) simulation [9][10][11][12][13]. Wang et al [9] examined the ITC in graphene/polyethylene (PE) nanocomposites and indicated that grafting PE chains to the graphene surface can effectively improve the ITC as well as the vibrational coupling between the graphene and polymer. Luo and Lloyd [10] examined thermal energy transport across the graphene polymer interface and demonstrated that forming covalent bonds at the interface can improve the thermal transport properties of nanocomposites.…”