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锦锦

银虫 (初入文坛)

[求助] NIPAM 的ATRP聚合

ATRP均聚NIPAM,单体用正己烷重结晶过
DMF/异丙醇(V/V=1:1)做溶剂,Ethyl 2-bromoisobutyrate(Eib-Br)做引发剂,
Me6TREN 做配体,CuCl作催化剂,[M]0:[I]0 =100:1
常温跟60度都尝试过,反应时间最长做到60小时,
聚合体系一直没有变粘,后处理过柱子去除铜盐,然后乙醚沉淀,
聚合一直不成功,求高人分析指点。

[ Last edited by 锦锦 on 2012-11-27 at 09:23 ]
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