Synthesis of Grafted Polysilsesquioxane through MADIX Process and Adhesive Property

Abstract

Polysilsesquioxane containing benzyl xanthate structures (XaPSQ) was prepared and used for grafting acryloylmorpholine (ACMO) and butylacrylate (BA). The use of XaPSQ for the radical polymerization enabled the preparation of the grafted polysilsesquioxane (PSQ) derivatives, in which the sequence of the monomer units was changed. The results of the graft polymerizations from XaPSQs suggested that reversible addition-fragmentation chain transfer polymerization (RAFT) progressed effectively without the formation of cross-linked by-product through the technique known as macromolecular design via the interchange of xanthate (MADIX). The grafted PSQs containing the polymerized ACMO and BA showed larger adhesive force for stainless steel and glass in comparison with polyethylene and poly(methylmethacrylate). As a characteristic of the grafted PSQs containing the block copolymers of ACMO and BA, the almost same value of holding power was recorded at both temperature of 40℃ and 80℃.