Abstract
The cationic polymerizations of 1,3-pentadiene initiated by AlCl 3 in n-hexane at 30°C have been carried out in the presence of various arenes, i.e., benzene, toluene, p-xylene, o-xylene, m-xylene and mesitylene. The presence of all these arenes have reduced to different extents the formation of crosslinked products. Namely, the crosslinking reaction, a major side-reaction during the cationic polymerization of 1,3-pentadiene, has been suppressed by adding the aromatic compounds. The results showed that a chain transfer to arene takes place and this transfer process hinders the generation of the crosslinked polymer. IR and 1 H NMR evidences have confirmed the existence of the corresponding aryl groups in the resulting polymers.
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