سال انتشار: ۱۳۹۱

محل انتشار: چهاردهمین کنگره ملی مهندسی شیمی ایران

تعداد صفحات: ۴

نویسنده(ها):

Sahar Amiri – Chemical Engineering Department, Tarbiat Modares University, Tehran, Iran
Mohammad Ali Semsarzadeh –

چکیده:

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