We are conducting daily research to create a new chemistry to produce various substances and materials from natural rubber: that is, natural rubber chemistry. We believe that we can establish a sustainable society that does not depend on petrochemicals by using natural rubber, which is a green resource and has excellent physical and mechanical properties, as a raw material. We have developed novel soft materials with a nano-matrix structure by graft copolymerization of monomers onto natural rubber. In particular, we expertise analyses of natural rubber through chemical structural analysis with a nuclear magnetic resonance (NMR) spectrometer and higher order structural analyses with a transmission electron microscope (TEM) and focused-ion microbeam-scanning electron microscope (FIB-SEM).