Sangjin Lee, Ph.D.

Corporate Development, Strategy and Investment

CVC and Strategy investment in Climate Tech

• Develop advanced metallocene LLDPE with high toughness and processability. • Develop metallocene HDPE with excellent properties and processability. • Develop specialty compounding for various applications such as shoe sole foams, barrier materials, and reactive extrusion.

• Designed and fabricated better structured PO multilayered film/foam by better understanding of shear and extensional rheology of the materials. • Designed and fabricated fire retarded PP multilayer film/foam by introducing flame retardant particle composites and better foam structure. • Designed and fabricated biaxially stretched PP foam/film for a piezo sensor. • Successfully layered elasticity mismatched PVDF, thermoplastic polyurethane (hard Isoplast®), thermoplastic polyester elastomer (soft hytrel®) into 1025 layer films—a revolution in co-extrusion processes. • Studied Rheo-FTIR for simultaneous structural analysis of polymeric materials under different shear conditions • Successfully layered polymers (EVOH and Nylon) /phosphate glass composites for high gas barrier property which have less than 10-4 barrer. • Investigated structural effect on the dielectric properties of TPU in terms of base materials of soft segment chain length and types. • Designed and fabricated PS/Ag nanocomposite for high dielectric constant (> 6) based on interfacial polarization between PS and Ag nanoparticles. • Studied shear extensional rheology for better understanding strain-hardening of polymeric and polymer/inorganic composite materials • Extensive hands-on experience with film and film/foam co-extrusion of all major thermoplastics and thermoplastics/inorganic composites including polyethylenes, polypropylene, PMMA, polycarbonates, PET, fluoropolymers, TPU, TPE.

• Developed dense and composite Membranes with ionic liquids for CO2 gas separation and synthesized of Ionic Liquids for CO2 Sorbent.

• Developed and investigated effects of clay and POSS nanoparticles on the quiescent and shear-induced crystallization behavior of high molecular weight poly (ethylene terephthalate) for tire cord application and discovered crystallization mechanism of high molecular weight PET with clay and POSS nanoparticles. • Studied and fabricated high-speed spinning of bicomponent PET/PP for filler application and obtained a new type of organic/organic composites. • Studied rheological properties of poly(acrylonitrile)/cellulose acetate blend solutions in DMF in terms of hydrogen bonding and prepared carbon nanofibers from the electrospun blend fibers