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Macromolecules, 2000, 33 (11), pp 4039¨C4047

"...was then dissolved in a minimum amount of diethyl ether (150 mL), after which it was precipitated into a 10-fold excess of a 50:50 v:v water:MeOH solution. After decanting off the solvent, the polymer was redissolved in diethyl ether, and the precipitation procedure was repeated two more times. The final polymer was dissolved in diethyl ether and transferred to a tared container, and the solvent was removed under vacuum. "
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