Ultrafast single‐electron‐transfer/degenerative‐chain‐transfer mediated living radical polymerization of acrylates initiated with iodoform in water at room temperature and catalyzed by sodium dithionite

Abstract

Sodium dithionite in the presence of NaHCO 3 in water acts as a singleelectron-transfer agent and facilitates the single-electron-transfer/degenerative-chaintransfer mediated living radical polymerization (SET-DTLRP) of acrylates initiated with iodoform at room temperature. The resulting ␣,-di(iodo)polyacrylates can be used as macroinitiators for the SET-DTLRP of other acrylates. Ultrahigh-molar-mass poly-(tert-butyl acrylate) can be synthesized via the SET-DTLRP of tert-butyl acrylate and has a very low weight-average molecular weight/number-average molecular weight ratio of 1.15.

Influence of the isomeric structures of butyl acrylate on its single‐electron transfer‐degenerative chain transfer living radical polymerization in water Catalyzed by Na2S2O4

“…On this matter, the development of a new strategy based on reversible activation-deactivation step required to accomplish LRP by combination of competitive single-electron transfer and degenerative chain transfer mediated living radical polymerization (SET-DTLRP) 4 is a clear example. Discovered by Percec, Popov et al, [4][5][6] this strategy has proved to be effective in the polymerization of activated 7,8 and nonactivated monomers. [4][5][6][9][10][11][12] The synthesis of poly(alkyl acrylates) has industrial advantages because they can cover a large range of mechanic and thermal properties through the variation of alkyl substitute group.…”

“…Discovered by Percec, Popov et al, [4][5][6] this strategy has proved to be effective in the polymerization of activated 7,8 and nonactivated monomers. [4][5][6][9][10][11][12] The synthesis of poly(alkyl acrylates) has industrial advantages because they can cover a large range of mechanic and thermal properties through the variation of alkyl substitute group. They have numerous industrial applications, including surfactants, compatibilization agents in polymer blends, adhesives, additives in highimpact materials, and thermoplatic elastomers.…”

Thermal characterization of poly(vinyl chloride) samples prepared by living radical polymerization: Comparison with poly(vinyl chloride) prepared by free radical polymerization

“…5 Nevertheless, the stringent conditions associated to some of these methods have limited the perspectives for widespread of commercial products. After several years of the development, Percec et al discovered a new strategy to polymerize-activated [6][7][8] and nonactivated monomers, [9][10][11] under controlled/ living mechanism in aqueous medium. In addition, this method requires only industrially consumed compounds and lead to a polymer that does not need to be purified.…”

“…12 Apart from the enhanced properties, the PVC-LRP has active chain ends that can be functionalized or reinitiated leading to new properties that widens the range of application of this polymer. 13,14 Because of its technological relevance and scientific importance, the thermal degradation and stabilization mechanism of PVC has been the subject of various studies and reviews. 15,16 The internal allylic chloride and tertiary chloride structural defects that are formed during the polymerization are identified as being structures responsible for the beginning of the dehydrochlorination process.…”

Synthesis of poly(ethyl acrylate) by single electron transfer‐degenerative chain transfer living radical polymerization in water catalyzed by Na2S2O4

“…On this matter, the development of a new strategy based on reversible activationdeactivation step required to accomplish LRP by combination of competitive single-electron-transfer (SET) and degenerative-chain transfer 4 is a clear example. Discovered by Percec, Popov and coworkers, [4][5][6] this strategy has proved to be effective in the polymerization of activated [7][8][9] and non-activated monomers. [4][5][6][8][9][10][11] The incorporation of acrylic based polymers was commonly used to the rubber toughening of glassy polymers, exerting their modifying influence in improving the toughness of the blended systems.…”