Polymers with furyl groups at chain-ends: the use of 2-styrylfuran as an additive in radical polymerizations

Introduction of Stilbene Derivatives and Cinnamate Ester Derivatives at the ω-End Groups of Poly(Methyl Methacrylate) Prepared via RAFT Polymerization

“…The capping results with stilbene (6) are disappointing and prompted the study of derivatives of other types of non-polymerizable, or poorly polymerizable olefins, namely 1,1-diphenylethylenes (7) and (8) and cinnamate esters (9) to (12). These results are also summarized in Table 2.…”

“…In the 1980s and 90s, Bevington’s research group studied the free radical polymerization of methyl methacrylate and styrene in the presence of small amounts of stilbenes, or related olefins. These polymerizations were monitored by using starting materials incorporating 13 C–, 14 C– or 19 F–labels [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. They found that when benzoyl peroxide ( 1 ) is used as the initiator, the benzoyloxy radicals, produced from the initial thermal decomposition of ( 1 ), react much more rapidly with the stilbene, or related olefins, than with the methacrylate or styrene monomer—so rapidly, in fact, that relatively few of the benzoyloxy radicals have a chance to decarboxylate to produce phenyl radicals.…”