期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 29, 期 18, 页码 1538-1543出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200800240
关键词
atom transfer radical polymerization (ATRP); catalysts; clay; selectivity; synthesis
资金
- MLP [007926]
A simple method has been described to remove catalyst from the copper mediated atom transfer radical polymerization (ATRP) of benzyl methacrylate and methyl methacrylate in anisole at 25 degrees C using hydrated natural clay (sodium montmorillonite, Na-clay). The method consists of (1) addition of hydrated clay (CU(I/)clay approximate to 5 wt.-%) either during or after the polymerization, (2) oxidation of catalyst complex by exposing the terminated reaction mixture in air, and (3) filtration to obtain catalyst free polymer solution. A strong coordination of CuBr-ligand complex onto hydrated clay (10 wt.-%
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