Untitled

Гришин, Д. Ф.; Семенычева, Л. Л.; Pavlovskaya, M. V.; Sokolov, K. V.

doi:10.1023/a:1013794227128

Cited by 11 publications

(8 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When no PBN/AIBN prereaction was carried out, the control on the radical polymerization of styrene was far from being ideal. This work seemed to be in contradiction to some reports by Grishin et al,23–30, 32 who mentioned that the in situ NMP of vinyl monomers was effective by simply adding PBN to the radical polymerization without any prereaction.…”

Section: Introductioncontrasting

confidence: 96%

“…Compared with the multistep synthesis of nitroxides and/or parent alkoxyamines, the use of appropriate precursors in the polymerization medium would be more straightforward and thus desirable. Therefore, the in situ formation of nitroxides from readily available and/or cheap precursors (i.e., nitrones,20–38 nitroso compounds,20–22, 25, 28, 34, 39–41 sodium nitrite,39, 42–44 nitric oxide,41, 45 hydroxylamines,46, 47 and secondary amines48–50) has been contemplated for practical and economic reasons 7. Among the possible nitroxide precursors, C‐phenyl‐ N ‐ tert ‐butylnitrone (PBN) (Scheme ) is one of the most efficient spin‐traps,51–55 which has been successfully used in the controlled radical polymerization of various monomers, including styrene and methyl methacrylate 20–23, 25–27, 29–31…”

Section: Introductionmentioning

confidence: 99%

“…6,[12][13][14][15][16][17][18][19] Compared with the multistep synthesis of nitroxides and/or parent alkoxyamines, the use of appropriate precursors in the polymerization medium would be more straightforward and thus desirable. Therefore, the in situ formation of nitroxides from readily available and/or cheap precursors (i.e., nitrones, [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] nitroso compounds, [20][21][22]25,28,34,[39][40][41] sodium nitrite, 39,[42][43][44] nitric oxide, 41,45 hydroxylamines, 46,47 and secondary amines [48][49][50] ) has been contemplated for practical and economic reaso...…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Relevance of a prereaction for the in situ NMP of styrene using the C‐Phenyl‐N‐tert‐butylnitrone/2,2′‐azobis(isobutyronitrile) pair

Sciannamea

Catala

Jérôme

et al. 2009

J. Polym. Sci. A Polym. Chem.

View full text Add to dashboard Cite

In this article, we compare two routes for carrying out in situ nitroxide‐mediated polymerization of styrene using the C‐phenyl‐N‐tert‐butylnitrone (PBN)/2,2′‐azobis(isobutyronitrile) (AIBN) pair to identify the best one for an optimal control. One route consists in adding PBN to the radical polymerization of styrene, while the other approach deals with a prereaction between the nitrone and the free radical initiator prior to the addition of the monomer and the polymerization. The combination of ESR and kinetics studies allowed demonstrating that when the polymerization of styrene is initiated by AIBN in the presence of enough PBN at 110 °C, fast decomposition of AIBN is responsible for the accumulation of dead polymer chains at the early stages of the polymerization, in combination with controlled polystyrene chains. On the other hand, PBN acts as a terminating agent at 70 °C with the formation of a polystyrene end‐capped by an alkoxyamine, which is not labile at this temperature but that can be reactivated and chain‐extended by increasing the temperature. Finally, the radical polymerization of styrene is better controlled when the nitrone/initiator pair is prereacted at 85 °C for 4 h in toluene before styrene is added and polymerized at 110 °C. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 1085–1097, 2009

show abstract

Section: Introductioncontrasting

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Relevance of a prereaction for the in situ NMP of styrene using the C‐Phenyl‐N‐tert‐butylnitrone/2,2′‐azobis(isobutyronitrile) pair

Sciannamea

Catala

Jérôme

et al. 2009

J. Polym. Sci. A Polym. Chem.

View full text Add to dashboard Cite

show abstract

“…SET‐LRP and SET‐DTLRP of VC and chain extension of hydroxypropyl acrylate were also demonstrated to be reliable on a pilot scale . Besides SET‐LRP and SET‐DTLRP, only a few literatures have been reported on the CLRP of VC . Abreu et al have first realized the CLRP of VC via RAFT method by using dithiocarbonate cyanomethyl methyl(phenyl)carbamodithioate as RAFT agent and tetrahydrofuran (THF) as sovlent .…”

Section: Introductionmentioning

confidence: 99%

Solution and aqueous miniemulsion polymerization of vinyl chloride mediated by a fluorinated xanthate

Huang

Pan

Bao

2016

J. Polym. Sci. Part A: Polym. Chem.

View full text Add to dashboard Cite

Solution and aqueous miniemulsion polymerizations of vinyl chloride (VC) mediated by (3,3,4,4,5,5,6,6,7, 7,8,8,8-tridecafluorooctyl-2-((ethoxycarbonothioyl)thio) propanoate) (X1) were studied. The living characters of X1-mediated solution and miniemulsion polymerizations of VC were confirmed by polymerization kinetics. The miniemulsion polymerization exhibits higher rate than solution polymerization. Final conversions of VC in the reversible addition-fragmentation chain transfer (RAFT) miniemulsion polymerization reach as high as 87% and are independent of X1 concentration. Initiation process of X1-mediated RAFT miniemulsion polymerization is controlled by the diffusion-adsorption process of prime radicals. Due to the heterogeneity of polymerization environments and concentration fluctuation of RAFT agent in droplets or latex particles, PVCs prepared in RAFT miniemulsion exhibit relatively broad molecular weight distribution. Furthermore, chain extensions of living PVC (PVC-X) with VC, vinyl acetate (VAc), and N-vinylpyrrolidone (NVP) reveal that PVC-X can be reinitiated and extended, further confirming the living nature of VC RAFT polymerization. PVC-b-PVAc diblock copolymer is successfully synthesized by the chain extension of PVC-X in RAFT miniemulsion polymerization.

show abstract

“…Quite recently, several research groups have focused on the direct formation of nitroxides and alkoxyamines in the polymerization medium from appropriate precursors, such as nitrones,31–44 nitroso compounds,31–33, 36, 39, 45–47, 48 sodium nitrite,46, 49–51 nitric oxide,52, 53 hydroxylamines,54 and secondary amines 55, 56. Among them, nitrones have been shown to impart some control to the radical polymerization of styrene and nBuA.…”

Section: Introductionmentioning

confidence: 99%

Kinetics and electron spin resonance study of the radical polymerization of n‐butyl acrylate mediated by a nitroxide precursor: C‐phenyl‐N‐tert‐butylnitrone

Sciannamea

Bernard

Catala

et al. 2006

J. Polym. Sci. A Polym. Chem.

View full text Add to dashboard Cite

The C‐phenyl‐N‐tert‐butylnitrone/azobisisobutyronitrile pair is able to impart control to the radical polymerization of n‐butyl acrylate as long as a two‐step process is implemented, that is, the prereaction of the nitrone and the initiator in toluene at 85 °C for 4 h followed by the addition and polymerization of n‐butyl acrylate at 110 °C. The structure of the in situ formed nitroxide has been established from kinetic and electron spin resonance data. The key parameters (the dissociation rate constant, combination rate constant, and equilibrium constant) that govern the process have been evaluated. The equilibrium constant between the dormant and active species is close to 1.6 × 10−12 mol L−1 at 110 °C. The dissociation rate constant and the activation energy for the CON bond homolysis are 1.9 × 10−3 s−1 and 122 ± 15 kJ mol−1, respectively. The rate constant of recombination between the propagating radical and the nitroxide is as high as 1.2 × 109 L mol−1 s−1. Finally, well‐defined poly(n‐butyl acrylate)‐b‐polystyrene block copolymers have been successfully prepared. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 6299–6311, 2006

show abstract

Untitled

Cited by 11 publications

References 3 publications

Relevance of a prereaction for the in situ NMP of styrene using the C‐Phenyl‐N‐tert‐butylnitrone/2,2′‐azobis(isobutyronitrile) pair

Relevance of a prereaction for the in situ NMP of styrene using the C‐Phenyl‐N‐tert‐butylnitrone/2,2′‐azobis(isobutyronitrile) pair

Solution and aqueous miniemulsion polymerization of vinyl chloride mediated by a fluorinated xanthate

Kinetics and electron spin resonance study of the radical polymerization of n‐butyl acrylate mediated by a nitroxide precursor: C‐phenyl‐N‐tert‐butylnitrone

Contact Info

Product

Resources

About