Novel Styrene−Butadiene Copolymers by Ring-Opening Metathesis Polymerization

• Published in: Macromolecules Vol. 33; no. 20; pp. 7241 - 7248
• Main Authors: Héroguez, V, Amédro, E, Grande, D, Fontanille, M, Gnanou, Y
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 03-10-2000
• Subjects: Applied sciences; Copolymerization; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; Preparation, kinetics, thermodynamics, mechanism and catalysts; Butadiene copolymer; Asymmetric molecule; Experimental study; Complex catalyst copolymerization; Macromer; Star copolymer; Metathesis polymerization; Butadiene polymer; Preparation; Styrene polymer; Ring opening copolymerization; Block copolymer; Styrene copolymer
• ISSN: 0024-9297; 1520-5835
• DOI: 10.1021/ma000470d

The possibilities offered by the ring-opening metathesis polymerization (ROMP) of macromonomers were exploited to arrange polystyrene (PS) and polybutadiene (PB) subchains in various topologies. PS n -b-PB m and PS n -co-PB m miktoarm stars were obtained by sequential and statistical polymerization of norbornene-terminated PS and PB macromonomers, whereas (PS-b-PB)n star block copolymers were derived by homopolymerization of the corresponding macromonomers via ROMP. Umbrella-type and dumbbell-shaped copolymers are two other architectures that were prepared through the sequential ROMP of ω-norbornenyl PS macromonomer and cyclooctadiene.