Copolymerization and addition of styrene andN-phenylmaleimide in the presence of nitroxide

Lokaj, J.; Holler, Petr; K?�?, J.

doi:10.1002/(sici)1097-4628(20000516)76:7<1093::aid-app13>3.0.co;2-m

Cited by 14 publications

(10 citation statements)

References 31 publications

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“…[65] Shortly after, the same group described the NMP of styrene and MAh. [66] In these two examples, TEMPO was used as control agent (i.e., first generation nitroxide) and therefore the molecular weight distributions of the formed alternating copolymers were relatively broad. It was demonstrated that a better control can be obtained using RAFT, [67][68][69] ATRP [70] or nitroxides of the second generation.…”

Section: Controlled Radical Copolymerization Of Styrene and Strong Elmentioning

confidence: 99%

Tailored Polymer Microstructures Prepared by Atom Transfer Radical Copolymerization of Styrene and N‐substituted Maleimides

Lutz¹,

Schmidt²,

Pfeifer³

2011

Macromol. Rapid Commun.

133

124

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In the present Feature Article, a kinetic strategy for controlling the microstructure of synthetic polymer chains prepared via a radical chain‐growth polymerization process is presented. This approach was recently developed in our laboratory and relies on the controlled kinetic addition of ultrareactive N‐substituted maleimides during the atom transfer radical polymerization of styrene. This method is experimentally straightforward and can be applied to a broad library of functional N‐substituted maleimides. Thus, this platform allows synthesis of unprecedented polymer materials such as 1D macromolecular arrays. The basic kinetic requirements, the experimental conditions, and the synthetic scope of this approach are discussed in details herein. magnified image

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Section: Controlled Radical Copolymerization Of Styrene and Strong Elmentioning

confidence: 99%

Tailored Polymer Microstructures Prepared by Atom Transfer Radical Copolymerization of Styrene and N‐substituted Maleimides

Lutz¹,

Schmidt²,

Pfeifer³

2011

Macromol. Rapid Commun.

133

124

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“…Recently, we have reported the results concerning poly( N ‐butyl‐ or N ‐phenylmaleimide‐ co ‐styrenes) and derived block copolymers (i.e., polymers with incorporated heterocyclic derivatives of 1,2‐ dicarboxyethene), which were synthesized by using the nitroxide technique. 29, 30 Nitroxide‐mediated polymerization leading to the copolymers of maleic anhydride was described by Hawker et al 26, 31 The aim of our present work was to prepare TEMPO‐ terminated copolymers of S with another 1,2‐substituted ethene, diethyl fumarate, and to employ them as macroinitiators in the synthesis of related poly(styrene‐ co ‐diethyl fumarate)‐ block ‐polystyrene copolymers (Scheme ).…”

Section: Introductionmentioning

confidence: 89%

Nitroxide‐terminated poly(styrene‐co‐diethyl fumarates) and derived block copolymers

Lokaj

Holler

Kovářová

2002

J of Applied Polymer Sci

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Copolymerization of styrene (S) and diethyl fumarate (DEF) at 125°C in the presence of 2,2,6,6-tetramethylpiperidin-1-yloxyl radical (TEMPO) and initiated with a thermal initiator, 2,2Ј-azobisisobutyronitrile (AIBN), was studied. The molar fraction of DEF in the feed, F DEF , varied within 0.1-0.9. An azeotropic composition, (F DEF ) A ϭ 0.38, was found for the copolymerization under study. At F DEF ϭ 0.1-0.4, a quasiliving process was observed, transforming to a retarded conventional radical copolymerization at a higher content of DEF in the initial mixtures. The obtained TEMPOterminated S-DEF copolymers were used to initiate polymerization of styrene. Poly-(styrene-co-diethyl fumarate)-block-polystyrene copolymers were prepared with molecular weight distributions depending on the amount of inactive polymer chains in macroinitiators, as indicated by size-exclusion chromatography. A limited miscibility of the blocks in the synthesized block copolymers was revealed by using differential scanning calorimetry.

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“…On the one hand, the initial "synergistic" effect implies a diffusion control of the degradation products of the COBAMI counit from the more stable St co-unit. On the other hand, reactive species from COBAMI counit would be able to modify the degradation mechanism of St counit which acceleration began to be detected at about 380 ± C. A greater residue than that expected from simulation can also result from the polymer chain ends containing TEMPO [25].…”

Section: Thermal Properties Of Cobami-st Copolymersmentioning

confidence: 98%

“…Copolymerizations of N-alkyl-or N-phenylmaleimides with St in bulk or solution by 'controlled' / living radical polymerization methods like ATRP [20,21] or SFRP [22][23][24][25][26] revealed that alternating copolymers or block copolymers with controlled molecular weight and low polydispersities can be prepared.…”

Section: Copolymerization Of Maleimide Monomer Cobami With Stmentioning

confidence: 99%

New mesogenic maleimide-styrene copolymers via N-oxyl mediated free radical copolymerization

Cianga¹,

Yaǧcı²,

Fernandes³

et al. 2003

Designed Monomers and Polymers

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New mesogenic N-substituted maleimide monomer was obtained starting 4-maleimido benzoic acid, hydroquinone and hexadecyloxy benzoic acid by successive Schotten-Bauman condensations. The copolymerization of this monomer in 1 : 1 ratio with styrene was performed both by stable free radical polymerization (SFRP) and conventional free radical polymerization (CFRP). High molecular weight polymeric material in high conversion and with low polydispersity was obtained under SFRP conditions. By using 1 H-and 13 C-NMR techniques, structural characteristics of the polymers were evidenced that could sustain the alternating character of the copolymers and the participationof the electron donor-acceptor complex in the propagation step. The copolymers formed a liquid crystal mesophase in the melt. This was ascribed to the strong tendency of the rod-like side groups on the stiff imide ring to order even in 1 : 1 dilute systems such as the alternating copolymers.

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Copolymerization and addition of styrene andN-phenylmaleimide in the presence of nitroxide

Cited by 14 publications

References 31 publications

Tailored Polymer Microstructures Prepared by Atom Transfer Radical Copolymerization of Styrene and N‐substituted Maleimides

Tailored Polymer Microstructures Prepared by Atom Transfer Radical Copolymerization of Styrene and N‐substituted Maleimides

Nitroxide‐terminated poly(styrene‐co‐diethyl fumarates) and derived block copolymers

New mesogenic maleimide-styrene copolymers via N-oxyl mediated free radical copolymerization

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