rubber septum was added 90 ml of dry toluene and 10 ml of dry tetrahydrofuran and 1 3 ml of tetrahydrofuran solution containing 17 5 u00d7 10 3 mole liclo 4 under a nitrogen atmosphere a tetrahydrofuran solution of dphli was added dropwise to the above mixture until the initiator colour persisted approximately 0 4 ml of 0 048 m initiator solution was generally required to get a persistent colour then 3 65 ml of 0 048 m dphli in tetrahydrofuran 1 75 u00d7 10 3 mole was added and the reaction flask was cooled to 78 u00b0 c after few minutes 2 g of purified methylmethacrylate freshly distilled from greenish yellow colour tri isobutylaluminum methylmethacrylate complex was transferred by stainless steel capillary under stirring and the polymerization was performed at 78 u00b0 c for 30 min the reaction was terminated by adding acidic methanol the polymer was recovered by precipitation into methanol water mixture 60 440 v v the crude polymer was dried at 40 u00b0 c for four hours under vacuum giving 1 6 g 86 conversion of poly methylmethacrylate gpc showed that the polymer had a mn 10 110 mw 10 641 and mw mn 1 05 polymerization of methylmethacrylate in toluene tetrahydrofuran 9 1 v v using 1 1 diphenylhexyllithium dphli liclo 4 initiator system at 40 u00b0 c in to a dry 250 ml round bottom flask equipped with magnetic needle nitrogen vacuum three way adapter with rubber septum was added 90 ml of dry toluene and 10 ml of dry tetrahydrofuran and 1 3 ml of tetrahydrofuran solution containing 2 15 u00d7 10 3 mole of liclo 4 under nitrogen atmosphere a tetrahydrofuran solution of dphli was added dropwise to the above mixture until the initiator colour persisted approximately.