Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

RADICAL POLYMERIZATION --- BLOCK POLYMERS

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

BLOCK POLYMERIZATION --- RADICAL POLYMERIZATION --- TELOMERIZATION

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

RADICAL POLYMERIZATION --- ANIONIC POLYMERIZATION --- CATIONIC POLYMERIZATION --- POLYMERIZATION CATALYSTS --- LIQUID CRYSTALS --- MACROCYCLIC COMPOUNDS --- POLYMERS, COMPOSITES --- POLYMER DEGRADATION --- POLYMERS --- PROPERTIES --- USES

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Metal-mediated polymerizations have largely contributed to the design of unprecedented (co)polymers with valuable properties for many applications in recent years. In particular, salen-type cobalt complexes have served as initiators and mediators for different types of polymerization methods including the organometallic-mediated radical polymerization (OMRP) of vinyl monomers and the ring-opening copolymerization (ROCoP) of epoxyde/anhydride leading to polyesters. The OMRP is based on the reversible cleavage of an alkyl-cobalt(III) species whereas ROCoP involves carboxy- and alkoxy-cobalt derivatives. In this work, we explore for the first time the potential of a carboxy-cobalt(III) complex, i.e. (R,R)-SalenCoOAc, as initiator and mediating species in the OMRP of vinyl monomers. In case of success, this should pave the way to the combination of OMRP and ROCoP and so to the synthesis of well-defined polyester-b-poly(vinyl monomer) block copolymers in minimal steps. In practice, (R,R)-SalenCoOAc was synthesized and tested as initiator of the methyl acrylate polymerization performed under thermal or photolytic treatments via different mechanistic regimes, namely reversible termination (RT) or degenerative chain transfer (DT). Reactions carried out under heating showed some characteristics of controlled radical polymerizations and poly(methyl acrylate)s with moderate dispersity were prepared accordingly. Overall, this study reports the first example of an OMRP process initiated from a carboxy-cobalt complex, which constitutes an important step to bridge the gap between OMRP and ROCoP.

Organometallic-mediated radial polymerization --- Cobalt-mediated radical polymerization --- Cobalt-Salen complex --- Physique, chimie, mathématiques & sciences de la terre > Chimie

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

This reprint is a compilation of nine papers published in Processes, in a Special Issue on “Modeling and Simulation of Polymerization Processes”. It aimed to address both new findings on basic topics and the modeling of the emerging aspects of product design and polymerization processes. It provides a nice view of the state of the art with regard to the modeling and simulation of polymerization processes. The use of well-established methods (e.g., the method of moments) and relatively more recent modeling approaches (e.g., Monte Carlo stochastic modeling) to describe polymerization processes of long-standing interest in industry (e.g., rubber emulsion polymerization) to polymerization systems of more modern interest (e.g., RDRP and plastic pyrolysis processes) are comprehensively covered in the papers contained in this reprint.

Technology: general issues --- Chemical engineering --- dithiolactones --- RAFT polymerization --- kinetic modeling --- vinyl monomers --- methyl methacrylate --- polystyrene --- thermal pyrolysis --- nitroxide mediated polymerization --- mathematical modeling --- Poly(acrylic acid) --- free-radical polymerization --- reaction model --- process intensification --- semi-batch to continuous --- initiator feeding policies --- styrene --- Monte Carlo simulation --- polymer microstructure --- aqueous phase polymerization --- polyelectrolytes --- radical polymerization --- modeling and simulation --- emulsion polymerization --- styrene–butadiene rubber --- nitrile rubber --- ethylene polymerization --- metallocene --- zirconium-based catalyst --- organoboron compounds --- polymer grafting --- polymer synthesis --- polymer characterization --- polymer reaction engineering --- reversible deactivation radical polymerization --- nano-SiO2 --- silane coupling agent --- thermal stability --- mechanical parameter --- molecular simulation --- n/a --- styrene-butadiene rubber