Iodine‐Transfer Polymerization (ITP) of Ethylene and Copolymerization with Vinyl Acetate

Wolpers, Arne; Baffie, Florian; Verrieux, Ludmilla; Perrin, Luc; Monteil, Vincent; D’Agosto, Franck

doi:10.1002/ange.202008872

“…Reversible deactivation radical polymerization (RDRP) has proved to be a very powerful tool to produce block copolymers. The recently developed RDRPs of ethylene now allows to access block copolymers and more complex architectures based on ethylene [8–16] . Industrially however, these strategies are not mature enough to be implemented efficiently.…”

Section: Introductionmentioning

confidence: 99%

Switch from Anionic Polymerization to Coordinative Chain Transfer Polymerization: A Valuable Strategy to Make Olefin Block Copolymers

Baulu

¹

,

Langlais

²

,

Ngo

³

et al. 2022

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Anionic polymerization of butadiene or/and styrene is performed with lithium initiators, functional or not. The polymer chains are subsequently transferred to magnesium. The resulting polymeryl-magnesium compounds were combined with {(Me 2 Si(C 13 H 8 ) 2 )Nd(μ-BH 4 )[(μ-BH 4 )Li(THF)]} 2 metallocene complex to act as macromolecular chain transfer agents (macroCTAs) in coordinative chain transfer polymerization (CCTP) of ethylene (E) or its copolymerization (CCTcoP) with butadiene (B). Block copolymers were produced for the first time by this switch from anionic polymerization to CCTP. Hard and soft blocks such as PB, polystyrene (PS), poly(styrene-co-butadiene) (SBR) obtained by anionic polymerization and PE or poly(ethylene-cobutadiene) (EBR) produced by CCT(co)P were combined and the corresponding structures were characterized.

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“…Reversible deactivation radical polymerization (RDRP) has proved to be a very powerful tool to produce block copolymers. The recently developed RDRPs of ethylene now allows to access block copolymers and more complex architectures based on ethylene [8–16] . Industrially however, these strategies are not mature enough to be implemented efficiently.…”

Section: Introductionmentioning

confidence: 99%

Switch from Anionic Polymerization to Coordinative Chain Transfer Polymerization: A Valuable Strategy to Make Olefin Block Copolymers

Baulu

¹

,

Langlais

²

,

Ngo

³

et al. 2022

Self Cite

View full text Add to dashboard Cite

Anionic polymerization of butadiene or/and styrene is performed with lithium initiators, functional or not. The polymer chains are subsequently transferred to magnesium. The resulting polymeryl-magnesium compounds were combined with {(Me 2 Si(C 13 H 8 ) 2 )Nd(μ-BH 4 )[(μ-BH 4 )Li(THF)]} 2 metallocene complex to act as macromolecular chain transfer agents (macroCTAs) in coordinative chain transfer polymerization (CCTP) of ethylene (E) or its copolymerization (CCTcoP) with butadiene (B). Block copolymers were produced for the first time by this switch from anionic polymerization to CCTP. Hard and soft blocks such as PB, polystyrene (PS), poly(styrene-co-butadiene) (SBR) obtained by anionic polymerization and PE or poly(ethylene-cobutadiene) (EBR) produced by CCT(co)P were combined and the corresponding structures were characterized.

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Block Copolymers Based on Ethylene and Methacrylates Using a Combination of Catalytic Chain Transfer Polymerisation (CCTP) and Radical Polymerisation

Baffie

¹

,

Patias

²

,

Shegiwal

³

et al. 2021

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Twos calable polymerisation methods are used in combination for the synthesis of ethylene and methacrylate blockc opolymers. w-Unsaturated methacrylic oligomers (MMA n )produced by catalytic chain transfer (co)polymerisation (CCTP) of methyl methacrylate (MMA) and methacrylic acid (MAA) are used as reagents in the radical polymerisation of ethylene (E) in dimethyl carbonate solvent under relatively mild conditions (80 bar,7 0 8 8C). Kinetic measurements and analyses of the produced copolymers by sizee xclusion chromatography (SEC) and ac ombination of nuclear magnetic resonance (NMR) techniques indicate that MMA n is involved in adegradative chain transfer process resulting in the formation of (MMA) n -b-PE blockc opolymers.M olecular modelling performed by DFT supports the overall reactivity scheme and observed selectivities.T he effect of MMA n molar mass and composition is also studied. The blockc opolymers were characterised by differential scanning calorimetry (DSC) and their bulk behaviour studied by SAXS/WAXS analysis.

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Iodine‐Transfer Polymerization (ITP) of Ethylene and Copolymerization with Vinyl Acetate

Cited by 5 publications

References 44 publications

Switch from Anionic Polymerization to Coordinative Chain Transfer Polymerization: A Valuable Strategy to Make Olefin Block Copolymers

Switch from Anionic Polymerization to Coordinative Chain Transfer Polymerization: A Valuable Strategy to Make Olefin Block Copolymers

Switch from Anionic Polymerization to Coordinative Chain Transfer Polymerization: A Valuable Strategy to Make Olefin Block Copolymers

Block Copolymers Based on Ethylene and Methacrylates Using a Combination of Catalytic Chain Transfer Polymerisation (CCTP) and Radical Polymerisation

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