Controlled radical polymerization of vinyl acetate in the presence of mesoporous silica supported TiCl4 heterogeneous catalyst

The heterogeneous TiCl4 catalysts supported on mesoporous mobile composition of matter (MCM-41) and mesoporous silicone prticles synthesized from block copolymer of PPG-PEG-PPG (SPB) complexed with dimethyl formamide (DMF) ligand were used in a controlled free radical reaction with benzoyl peroxide (BPO) initiator in the bulk polymerization of vinyl acetate (VAc). In this polymerization process, the mesoporous particle of SPB increased the reactivity of TiCl4 catalyst with DMF ligand. The active site formed on the surface and the pores of the catalyst produced specific sequences of VAc on the chain with different thermal and microstructural properties and crystallinity

کلیدواژه ها:

Mesoporous Silica ، Heterogeneous Catalyst ، Specific Sequences ، Controlled Free Radical Polymerization ، Crystallinity ، Vinyl Acetate