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Anionic polymerization of various methacrylates initiated with LiCl-complexed sBuLi

✍ Scribed by S. Antoun; J.S. Wang; R. Jérôme; Ph. Teyssié

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
452 KB
Volume
37
Category
Article
ISSN
0032-3861

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✦ Synopsis

A simple alkyl lithium initiator (sBuLi) complexed with LiCl (10 molar equiv.) has been used to initiate the anionic polymerization of various methacrylic monomers, i.e. methyl methacrylate (MMA), tert-butyl methacrylate (tBuMA), glycidyl methacrylate (GMA), and dimethyl amino ethyl methacrylate (DMAEMA) in tetrahydrofuran at -78°C. Only the homopolymerization of tBuMA proceeds in a living manner, as evidenced by both the linear plot of experimental molecular weight (MQXp) vs theoretical ones (Mb,) (slope % 0.93) and monomer resumption experiments. However, three types of block copolymers, i.e. PtBuMA-b-PMMA, PtBuMA-b-PGMA, PtBuMA-b-PDMAEMA, have been successfully synthesized with a predictable molecular weight, and narrow molecular weight distribution.

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