Organo-modified nanodiamond with excellent heat-resistance - nanodispersion in crystalline transparent polymer -

Well-dispersed polymer/organo‐modified nanodiamond (ND) composites were created using crystalline fluorinated polymers as a matrix. Both fluorocarbon- and hydrocarbon-modified ND formed well-dispersed nanocomposites in polyvinylidene-fluoride-based fluorocopolymers. The former was prepared due to excellent miscibility, and the latter was obtained by the so-called "nucleation effect". Fabricating a nanocomposite by combining hydrocarbon-modified fine particles and a fluorinated polymer is not universally feasible, and this system was unique. Ethylene-tetrafluoroethylene and perfluoroalkoxyalkane polymers showing high-melting points cannot form a nanohybrid with hydrocarbon-modified inorganic nanoparticles. To form a nanocomposite via melt-compounding, the desorption temperature of the modified chain of the outermost surface of the organo-ND had to be increased. Phosphonic acid containing fluorocarbon chain-modified ND had satisfied all these requirements.