Towards a Living Radical Polymerization of Styrene by Using Dithiolactone as a New Type of Mediating Agent

Soriano-Moro, Jesús Guillermo; Rico-Valverde, Julio C.; Enríquez-Medrano, Francisco Javier; Maldonado‐Textle, Hortensia; Vivaldo‐Lima, Eduardo; Ortiz, Ricardo Acosta; Guerrero‐Santos, Ramiro

doi:10.1002/marc.200700603

Cited by 4 publications

(12 citation statements)

References 16 publications

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“…[82] The thiolactone 19 was proposed to control the polymerization of St by a similar addition-fragmentation process (Scheme 2). [83] The mechanism as shown seems unlikely since, for control, most of the propagating species would need to be present as the dormant species 21. ESR experiments showed that [65] (Continued) A Published values of transfer constants that are based on a model that does not allow for partitioning of the intermediate radicals and/or the reversibility of chain transfer are considered as apparent transfer constants (see text).…”

Section: Raft-related Processesmentioning

confidence: 97%

Living Radical Polymerization by the RAFT Process - A Second Update

Moad¹,

Rizzardo²,

Thang³

2009

Aust. J. Chem.

906

720

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This paper provides a second update to the review of reversible deactivation radical polymerization achieved with thiocarbonylthio compounds (ZC(=S)SR) by a mechanism of reversible addition-fragmentation chain transfer (RAFT) that was published in June 2005 (Aust. J. Chem. 2005, 58, 379-410). The first update was published in November 2006 (Aust. J. Chem. 2006, 59, 669-692). This review cites over 500 papers that appeared during the period mid-2006 to mid-2009 covering various aspects of RAFT polymerization ranging from reagent synthesis and properties, kinetics and mechanism of polymerization, novel polymer syntheses and a diverse range of applications. Significant developments have occurred, particularly in the areas of novel RAFT agents, techniques for end-group removal and transformation, the production of micro/nanoparticles and modified surfaces, and biopolymer conjugates both for therapeutic and diagnostic applications.

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Section: Raft-related Processesmentioning

confidence: 97%

Living Radical Polymerization by the RAFT Process - A Second Update

Moad¹,

Rizzardo²,

Thang³

2009

Aust. J. Chem.

906

720

View full text Add to dashboard Cite

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“…Polymers were isolated by precipitation in methanol. Monomer conversion was gravimetrically determined by duplicate, in all cases [13].…”

Section: Polymerization Proceduresmentioning

confidence: 99%

“…Data acquisition was performed using Polymer Laboratories GPC software. All measurements were obtained by duplicate [13].…”

Section: Measurement Of Molar Mass Characteristicsmentioning

confidence: 99%

“…The polymerization scheme used for our simulations was based on the reaction mechanism proposed by Soriano-Moro et al for DTL1 [13,15], shown in Figure 5. This polymerization scheme corresponded to a RAFT polymerization without fragmentation.…”

Section: Polymerization Schemementioning

confidence: 99%

“…Dithiolactones are the cyclic counterpart to dithioester and thiocarbonylthio compounds, which are used as RAFT agents. However, as seen in Figure 5, there is no fragmentation in dithiolactone-mediated free-radical polymerizations (DTLMP), and the addition reaction is reversible [12,13].…”

Section: Introductionmentioning

confidence: 99%

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New Aspects on the Modeling of Dithiolactone-Mediated Radical Polymerization of Vinyl Monomers

et al. 2019

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A kinetic model for the dithiolactone-mediated radical polymerization of vinyl monomers based on the persistent radical effect and reversible addition (negligible fragmentation) was used to calculate the polymerization rate and describe molar mass development in the polymerization of methyl methacrylate at 60 °C, using 2,2-azobisisobutyronitrile (AIBN) as an initiator, as well as dihydro-5-phenyl-2(3H)-thiophenethione (DTL1) and dihydro-2(3H)-thiophenethione (DTL2) as controllers. The model was implemented in the PREDICI commercial software. A good agreement between experimental data and model predictions was obtained.

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Novel electrically conducting polyurethanes with oligoanilines: Synthesis, conductivity, and electrochemical properties

Arukula

Thota

Rao

et al. 2014

J of Applied Polymer Sci

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New class of conducting polyurethanes (CPUs) containing oligoanilines, namely tetraaniline (TAni) or trianiline (TriAni), in the backbone have been synthesized and characterized by formal spectral techniques. The unique properties of these CPUs, viz., electronic conductivity and electrochemical activity arising from the presence of oligoaniline units have been evaluated. The basic polyurethane backbone is derived from toluene diisocyanate, isophorone diisocyanate or hexamethylene diisocyanate, and polypropylene glycols of molecular weight 425 and 2000. In the first category of polyurethanes, the prepolymers obtained from the above reactants were chain terminated by TAni in emeraldine base oxidation state. The conductivity of these CPUs films ranged from 1.2 3 10 25 to 1.77 3 10 23 S cm 21 . These polymers showed lower conductivity due to the presence of nonconjugated polyurethane segments. These CPUs exhibited slightly different electrochemical activity than that of TAni. The second category of CPUs is obtained from prepolymers by chain extension with TriAni. The conductivity of these polymers is similar to the TAni analogues but are electrochemically inactive. The anticorrosion properties of two of these polymers have also been evaluated in this study. V C 2014 Wiley Periodicals, Inc. J.Appl. Polym. Sci. 2014, 131, 40794.

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Towards a Living Radical Polymerization of Styrene by Using Dithiolactone as a New Type of Mediating Agent

Cited by 4 publications

References 16 publications

Living Radical Polymerization by the RAFT Process - A Second Update

Living Radical Polymerization by the RAFT Process - A Second Update

New Aspects on the Modeling of Dithiolactone-Mediated Radical Polymerization of Vinyl Monomers

Novel electrically conducting polyurethanes with oligoanilines: Synthesis, conductivity, and electrochemical properties

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