Anionic Polymerization - Butadiene + sec BuLi

Hi all,

I am desperately seeking help for my anionic polymerization. I am trying to synthesize Polybutadiene with sec BuLi as my initiator, cyclohexane as my solvent, and polymerization temperature was set at

37oC, target Mn is ~30K. However, when I try to precipitate my reactor solution in methanol, I got a SUSPENSION, instead of any polymer precipitate. Anyone know what's wrong with that?

Thousand thx!

Wan

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mkefish
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