Graft copolymer synthesis with transformation reactions

Hydroxyl and carboxyl functional groups are very valuable in the chemistry of polymers due to the wide variety of reactions that can be carried out through these intermediates, such as transformations into other useful functional groups or block and graft copolymer synthesis. Thus, there have been many attempts to synthesize PIBs with such end groups, mostly by rather cumbersome methods Most of these... 

Recently, Hirao et and Paraskeva and Hadjichristidis succeeded in the synthesis of exact graft copolymer with two, three, four, and five branches via a new iterative methodology based on living anionic polymerization. The reaction involves three steps site transformation, linking, and addition (Figure 19). 

At the same time, Wnek et al. [98] published a series of papers concerned with the synthesis of other copolymers. Two synthetic routes were developed. The first one used doped PA as a macromolecular initiator for the synthesis of graft copolymers, and the second one used the transformation reaction as a route for the preparation of block copolymer. 

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