It was further confirmed through the anionic bulk polymerization of -methylstyrene (mSt) initiated by n-butyl lithium (n-BuLi)/tetrahydrofuran (THF) that the aggregators of n-BuLi could initiate anionic polymerization

which resulted in forming of the supramolecules

then these supramolecules would be dissociated during the further polymerization.The results have further verified the new initiating mechanism of anionic polymerization proposed previously.With the in situ 7Li-NMR during the polymerization of mSt under D-benzene as solvent

THF as regulator and n-BuLi as initiator

it was further confirmed that in the system

there existed a conversion process of the initiator aggregators from pluralistic aggregated structure to the binary one.Meanwhile

in situ 7Li-NMR of isoprene polymerization under D-benzene solution initiated by n-BuLi also verified the conversion process of the initiator aggregators.It was also found that when a small amount of THF was mixed in the mSt polymerization system

the two or three of hexameric aggregators might be connected by THF.However

these connected aggregators would be dissociated preceding that of hexameric aggregators themselves.Furthermore

with the increasing of n-BuLi/THF (mole ratio) from 1∶1 to 1∶5

the huge aggregators of n-BuLi could be changed into hexameric ones.