1. Introduction. Overview of Polymer Blends and Blend-nanocomposites: State of the Art and New Challenges2. Types of Nanofillers3. Thermo-dynamics, Miscibility, and Theory of Nanofillers in Polymer Blends4. Processing, Morphology, Structure, and Properties of Nano-filled Polymer Blends5. Nanofillers in Miscible Polymer Blends6. Nanofillers in Immiscible Polymer Blends7. Filler Migration in Polymer Blends During Mixing Process8. Role of Nanofillers in Miscibility and Compatibility of Polymer Blends9. Role of Nanofillers in Thermoplastic-thermoplastic Polymer Blends10. Role of Nanofillers in Thermoplastic–elastomer Polymer Blends11. Role of Nanofillers Elastomer–elastomer Polymer Blends12. Role of Nanofillers in Elastomer–thermoset Polymer Blends13. Role of Nanofillers in Thermoplastic-thermosetting Polymer Blends14. Role of Nanofillers in Thermosetting-Thermosetting Polymer Blends15. Effect of Hybrid Nanofillers in Polymer Blends16. Processing, Morphology, Rheology, Properties and Applications of Clay-filled Polymer Blends17. Processing, Morphology, Rheology, Properties and Applications of CNT- filled Polymer Blends18. Processing, Morphology, Rheology, Properties and Applications of Fullerene-filled Polymer Blends19. Processing, Morphology, Rheology, Properties and Applications of Nano Carbon Black-filled Polymer Blends20. Processing, Morphology, Rheology, Properties and Applications of Graphene-filled Polymer Blends21. Processing, Morphology, Rheology, Properties and Applications of Carbon Fiber-filled Polymer Blends22. Processing, Morphology, Rheology, Properties and Applications of Expanded Graphite-filled Polymer Blends23. Processing, Morphology, Rheology, Properties and Applications of POSS-filled Polymer Blends24. Processing, Morphology, Rheology, Properties and Applications of Metal Oxide-filled Polymer Blends25. Processing, Morphology, Rheology, Properties and Applications of Nanocellulose-filled26. Processing, Morphology, Rheology, Properties and Applications of Nano Chitin-filled Polymer Blends27. Processing, Morphology, Rheology, Properties and Applications of Nano-silica-filled Polymer Blends28. Processing, Morphology, Rheology, Properties and Applications of Nano-calcium Carbonate Polymer Blends29. Processing, Morphology, Rheology, Properties and Applications of Nano-starch-filled Polymer Blends30. Processing, Morphology, Rheology, Properties and Applications of Nano-metal Particle-filled Polymer Blends31. Processing, Morphology, Rheology, Properties and Applications of Mxene-filled Polymer Blends32. Processing, Morphology, Rheology, Properties and Applications of Nano-metal Sulfide-filled Polymer Blends33. Processing, Morphology, Rheology, Properties and Applications of Metal Carbide-filled Polymer Blends34. Processing, Morphology, Rheology, Properties and Applications of Nano-metal Telluride-filled Polymer Blends35. Processing, Morphology, Rheology, Properties and Applications of Metal Selinide-filled Polymer Blends36. Theory, Modeling and Simulation of Nano-filled Polymer Blends37. LCA of Polymer Blend Nanocomposites38. Comments on the Future of Nano-filled Polymer Blends