Orozco, FelipeFelipeOrozcoSalvatore, AlexAlexSalvatoreSakulmankongsuk, AnchistaAnchistaSakulmankongsukRibas Gomes, DiegoDiegoRibas GomesPei, YutaoYutaoPeiAraya-Hermosilla, Esteban AlejandroEsteban AlejandroAraya-HermosillaPucci, AndreaAndreaPucciMoreno-Villoslada, IgnacioIgnacioMoreno-VillosladaPicchioni, FrancescoFrancescoPicchioniBose, Ranjita K.Ranjita K.Bose2022-11-232022-11-232022-09-23Polymer 260: 125365 (2022)http://hdl.handle.net/11420/14125Multiwalled carbon nanotubes (MWCNT) and carbon black (CB) have been widely used as conductive fillers in electroactive polymer composites. MWCNT-based composites generally have lower resistivity and percolation thresholds, while CB-based ones are considerably cheaper. To balance these pros and cons, ternary composites (TCs) (polymer-MWCNT-CB) can be formulated. Here, we prepared electroactive MWCNT-CB TCs capable of self-healing and with shape memory properties, based on polyketones reversibly-crosslinked via Diels-Alder chemistry. Unexpectedly, the cheaper CB-rich formulations had lower resistivities, thus better electroactive self-healing and shape memory responses. Nonetheless, not all electroactive MWCNT-CB TCs have this clear cost-effectiveness. We evaluated the cost-performance of multiple reported MWCNT-CB TCs systems and found different general trends (positive, negative, and synergistic cost-efficiency relationships). Thus, the cost-effectiveness of these fillers (and their combination) greatly depends on each composite system and what it is intended for. This work includes the first systematic report on cost-performance of MWCNT and CB as conductive fillers.en0032-38612022Elsevier ScienceCost-performance analysisElectrical propertiesMicrostructural analysisPolymer-matrix composites (PMCs)PhysikJournal Article10.1016/j.polymer.2022.125365Other