Encapsulation/coating of nanoparticles is a significant test return to the minuscule size and high surface energy with surface space of the nanoparticles. This manuscript, using waste chicken eggshell (WCES) particles as a core material and natural rubber-graft-acrylamide (NR-g-AAm) as the wall material or shell. Fourier Transform Infrared (FTIR) Spectroscopy and Scanning Electron Microscopy (SEM) were used to determine the main structure and surface analysis of encapsulated waste chicken eggshell (ENWCES) and novel composites. Mechanical and Dynamic Mechanical Analysis were tested. Thermal Analysis and flame retardant were applied to the specimens using thermal gravimetric analysis, Flame Chamber, and limiting oxygen index (LOI) according to standards. It has been established that microencapsulation enhanced the mechanical properties of WPP composites. This technique recorded the highest thermal stability and ash residue percentages. These enhancements still working on stopping ignition, whereas, these new compositions protect ignition up to 26%, which can be classified as a flame retardant.