Macromonomers polymerizable oligomers

The use of macromonomers in controlled living polymerization techniques, such as ionic or CRP, is at present the preferred synthesis strategy for the preparation of relatively well-defined graft copolymers. Macromonomers are oligomers fitted with polymerizable end-groups, mainly styrenic or (meth)acrylic, that can copolymerize with monomers to form comb-type graft copolymers with pendent preformed polymer chains. 

Macromonomers are polymers or oligomers with polymerizable end groups, widely investigated for the preparation of functional polymers and polymer microspheres by dispersion polymerization. For microspheres, the macromonomers should be designed to copolymerize with the main monomers in such a way as to produce graft chains that serve as efficient stabilizers in other words, their main chain should be firmly bound to the particle surface and the graft chains should extend into the polymerization medium. 

Normally, a maaomonomer carries only a single oligomer chain. The combination of a terminal vinyl group with two polymeric chains has also been reported. In such an example, macromonomers consisting of a methacryloyl group as a polymerizable unit and two PS or poly(tert-butyl acrylate) (PtBA) chains were prepared in two steps as shown in Figure 3 (1) ATRP of styrene or tBA was initiated by a diinitiator, 1 -hydroxymethyl-1,1 -di [ (2-bromoisobutyryloxy)... 

Macromolecular monomers, called macromonomers or macromers, can be defined as oligomers or polymers with a polymerizable end group. Such groups may be... 

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