1. Organic and Inorganic Nanofillers for Polymer Nanocomposites: Trends, Opportunities and Challenges 2. Functionalization and Surface Modification Strategies of Nanofillers: Dispersion State and Specific Interaction Between Functionalized Nanofillers and Polymeric Systems 3. Characterization Techniques of Surface Modified or Functionalized Nanofillers 4. Synthesis and Processing Methods of Polymer Nanocomposites 5. Spectroscopic and Microscopic Investigations of Functionalized Polymer Nanocomposites 6. Optical, Electrical, and Mechanical Properties of Functionalized Polymer Nanocomposites 7. Thermal Behavior and Thermo-Kinetic Studies of Functionalized Polymer Nanocomposites 8. Rheological and Tribological Properties of Functionalized Polymer Nanocomposites 9. Functionalized Black Phosphorous Based Polymer Nanocomposites 10. Functionalized Carbon Nanotubes Based Polymer Nanocomposites 11. Functionalized MXenes Based Polymer Nanocomposites 12. Functionalized Graphene Based Polymer Nanocomposites 13. Functionalized Boron Nitride Based Polymer Nanocomposites 14. Functionalized Nanoclay Based Polymer Nanocomposites 15. Functionalized Nanosilica Based Polymer Nanocomposites 16. Functionalized Metal Oxides Based Polymer Nanocomposites 17. Functionalized Polyhedral Oligomeric Silsesquioxanes Based Polymer Nanocomposites 18. Functionalized Polymer Nanocomposites for Biomedical Applications 19. Functionalized Polymer Nanocomposites for Environmental Remediation 20. Functionalized Polymer Nanocomposites for Photocatalytic Applications 21. Functionalized Polymer Nanocomposites for Energy Storage Applications 22. Functionalized Polymer Nanocomposites for Gas Sensing and Biosensing 23. Functionalized Polymer Nanocomposites for Dielectric Applications 24. Functionalized Polymer Nanocomposites for EMI Shielding Applications 25. Computational Studies and Modelling Aspects of Functionalized Polymer Nanocomposites 26. Life Cycle Assessments, Environmental Implications and Toxicological Evaluations of Functionalized Polymer Nanocomposites