Polymers, graft, dynamic formation

Dynamic formation of graft polymers was synthesized by means of the radical crossover reaction of alkoxyamines by using the complementarity between nitroxide radical and styryl radical (Fig. 8.13) [40]. Copolymer 48 having alkoxyamine units on its side chain was synthesized via atom transfer radical polymerization (ATRP) of TEMPO-based alkoxyamine monomer 47 and MMA at 50°C (Scheme 8.9). The TEMPO-based alkoxyamine-terminated polystyrene 49 was prepared through the conventional nitroxide-mediated free radical polymerization (NMP) procedure [5,41], The mixture of copolymers 48 and 49 was heated in anisole... 

Figure 8.13 Schematic representation for the dynamic formation of graft polymer through radical crossover reactions of alkoxyamine units [32],...

Scheme 8.10 Dynamic formation of graft polymer 50 prepared form copolymer 48 and TEMPO-based alkoxyamine-terminated polystyrene 49 [40].

Higaki, Y Otsuka, H. Takahara, A. Dynamic formation of grafted polymers via radical crossover reaction of alkoxyamines. Macromolecules 2004, 37, 1696-1701. 

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