ABSTRACT
Coordinated polymerization is a crucial technology of polymer synthesis, with major industrial applications in the production of high-density polyethylene (PE), linear low-density PE, and isotactic polypropylene. Synthetic studies on the preparation of syndiotactic polystyrene (sPS) by coordinated polymerization are important, because of the significant properties of sPS, including high crystallinity and melting point, superior heat and chemical resistance, etc. Dendritic polymers are an important class of highly branched polymers that possess higher solubility and miscibility with other materials, as well as more terminal groups, than linear or lightly branched polymers. A special type of dendritic polymers is prepared by self-condensing cationic polymerization of 1-[(2-vinyloxy)ethoxy]ethyl acetate. As a widely used biodegradable polymer, polylactide is relatively brittle. Polyurethane-toughened polylactide, prepared through solution blending followed by crosslinking, leads to an increase of the maximum toughness by one magnitude as compared to pure polylactide.
