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Poly(methyl methacrylate) containing pyrrole moieties in the side chains

✍ Scribed by Manfred L. Hallensleben; Dietmar Stanke; Levent Toppare

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
353 KB
Volume
196
Category
Article
ISSN
1022-1352

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✦ Synopsis

Two synthetic routes to copolymers 7 of methyl methacrylate (MMA) with 2-(N-pyrrolyl)ethyl methacrylate (PEMA, 11) are compared. Copolymerization of MMA (4) with 2-bromoethyl methacrylate (BEMA, 3) leads to a precursor copolymer 5. The reactivity ratios are close to unity (rMMA = 0,90, rBEMA = 0,92). The polymer-analogous reaction of 5 with N-pyrrolylpotassium (6) runs to 99% conversion of the BEMA units. The synthesis of PEMA (11) is presented. The reactivity ratios of copolymerization of this monomer (11) with MMA (4) are determined to rMMA = 1,05 and rPEMA = 1,65. Copolymers 7 are further characterized by 'H nuclear magnetic resonance, infrared spectroscopy, gel-permeation chromatography and differential scanning calorimetry.

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