Azobisisobutyronitrile → HCID 66688487, compound

Participants

Reaction Steps

To a 500 mL clear glass bottle was charged with 210 g toluene, 72.0 g styrene (product of Aldrich Chemical Company, Milwaukee, Wis), 28.0 g dimethylaminoethyl methacrylate (commercially obtained from Aldrich Chemical Company, Milwaukee, Wis.) and 1.35g of 2,2′-azobisisobutyronitrile (AIBN, commercially obtained from Aldrich Chemical Company, Milwaukee, Wis.). The resulting solution was purged with nitrogen for 10 minutes then placed in a tumbler with a heated water bath (Launder-o-meter, commercially obtained from Atlas Electric Products, Chicago Ill.) with the bath temperature set to 70° C. The mixture was allowed to react at 70° C. while tumbling for a period of 16 hours, then was removed and cooled to room temperature. An additional 72.0 g of styrene, 28.0 g of dimethylaminoethyl methacrylate and 1.35 g of AIBN were added to the bottle, which was again purged with nitrogen and tumbled at 70° C. for 20 hours. The resulting polymer solution in toluene was poured into heptane (approximately 3500 mL) to give a precipitate in the form of an opaque viscous liquid with a consistency like paste. The heptane was decanted from the precipitated polymer and the polymer was allowed to dry in a vented oven for 2 days. The dried, glassy polymer was dissolved in toluene and precipitated a second time, followed by decanting and drying to give a glassy solid product of poly(styrene-co-dimethylaminoethyl methacrylate) with calculated styrene/dimethylaminoethyl methacrylate mole ratio=8/2.

Provenance & Evidence