Sequence Distribution and Stereoregularity in Styrene/Butyl Methacrylate Copolymers Obtained at High Conversion by Stable Free-Radical Polymerization

• Published in: Macromolecular rapid communications. Vol. 23; no. 14; pp. 834 - 838
• Main Authors: Cuervo-Rodríguez, Rocío, Fernández-Monreal, Carmen, López Madruga, Enrique
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.10.2002; WILEY‐VCH Verlag; Wiley
• Subjects: Applied sciences; copolymerization; Exact sciences and technology; Mayo-Lewis terminal model; microstructure; NMR; Organic polymers; Physicochemistry of polymers; Properties and characterization; stable free-radical polymerization; Structure, morphology and analysis; Tacticity; Molecular structure; Piperidine derivatives; Living copolymer; Mass copolymerization; Sequence distribution; Radical copolymerization; Experimental study; Microstructure; Butyl methacrylate copolymer; Styrene copolymer
• ISSN: 1022-1336; 1521-3927
• DOI: 10.1002/1521-3927(20021001)23:14<834::AID-MARC834>3.0.CO;2-L

13C NMR spectra of styrene/butyl methacrylate copolymers prepared in bulk at 125°C using 2,2,6,6‐tetramethyl‐1‐(1‐phenylethoxy)piperidine as the initiator were analyzed. After assignment of the carbon resonances of the aromatic C‐1 region, the Mayo‐Lewis terminal model (MLTM) was tested by comparison of experimental and predicted values of configurational triad sequences. It follows that MLTM provides an excellent prediction across a wide conversion range for all comonomer feeds.