Thermosetting Epoxy Microspheres: Preparation, Characterization And Their Functionalization Via Living Free Radical Polymerization

In this thesis, three thermoplastic resins (PEI (Polyetherimide), SAN(Styrene Acrylonitrile copolymer) and PCL(Polycaprolactone)) were respectively used to incorporate into epoxy resin to prepared epoxy-particles via reaction-induced phase inverstion. It was found that the epoxy particle prepared through PCL/EP system possessed more uniform spherical shape and the size were in the range of 2~5μm. The acrylate rubber and poly Glycidyl methacrylate were grafted onto the surface of the epoxy particles via Reversible Addition-Fracture Chain Transfer polymerization (RAFT) and Atom Transfer Radical Polymerization (ATRP). The performance and structure of Acrylate polymer grafted thermosetting epoxy microspheres were studied by Infrared Spectroscopy (IR ), Nuclear Magnetic Resonance Spectroscopy (NMR), Thermo Gravimetric Analysis(TGA) and Scanning Electron microscope (SEM). The sol-gel reaction was carried out between the as-prepared Epoxy-g-PGMA using as the reactive template and TEOS, and the macroporous silica material was obtained after the organic compounds were totally decomposed. The structure and performance were studied by using Thermo Gravimetric Analysis(TGA), Transmission Electron Microscope (TEM) , Scanning Electron Microscope (SEM) and N2 adsorption-desorption technique. It was found that the Macroporous material possessed uniform pore with size in 2～5μm , and the surface area of the macroporous material was as high as 235m2/g when the content of the organic component in the gel was 80%.