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

Bulletin of materials science

M A Semsarzadeh¹  S Amiri¹  M Azadeh¹ 

[1] Tarbiat Modares University, Jalal Al-e-Ahmad Highway, Tehran, PO Box 14115-111, Iran$$Tarbiat Modares University, Jalal Al-e-Ahmad Highway, Tehran, PO Box 14115-111, IranTarbiat Modares University, Jalal Al-e-Ahmad Highway, Tehran, PO Box 14115-111, Iran$$

关键词: Mesoporous silica;    heterogeneous catalyst;    specific sequences;    controlled free radical polymerization;    crystallinity;    vinyl acetate.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The heterogeneous TiCl₄ catalysts supported on mesoporous mobile composition of matter (MCM-41) and mesoporous silicone particles synthesized from block copolymer of PPGâ€�?�PEGâ€�?�PPG (SPB) complexed with dimethyl formamide (DMF) ligand were used in a controlled free radical reaction with benzoyl peroxide (BPO) initiator in bulk polymerization of vinyl acetate (VAc). In this polymerization process, 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.

【 授权许可】

Unknown