1. Cyanoxyl-mediated free-radical polymerization of acrylic acid: Its scope and limitations
- Author
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Yves Gnanou, Daniel Grande, Ramiro Guerrero, Centro Investig Quim Aplicada, Coahuila, Mexico, Centro Investigacion en Quimica Aplicada, Coahuila, Mexico, Laboratoire de Chimie des polymères organiques (LCPO), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Université Sciences et Technologies - Bordeaux 1-Institut de Chimie du CNRS (INC), Team 1 LCPO : Polymerization Catalyses & Engineering, Laboratoire de Chimie des Polymères Organiques (LCPO), and Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Ecole Nationale Supérieure de Chimie, de Biologie et de Physique (ENSCBP)-Université de Bordeaux (UB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Ecole Nationale Supérieure de Chimie, de Biologie et de Physique (ENSCBP)-Université de Bordeaux (UB)-Institut de Chimie du CNRS (INC)
- Subjects
Polymers and Plastics ,Radical polymerization ,cyanoxyl radicals ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,chemistry.chemical_compound ,Polymer chemistry ,Materials Chemistry ,Copolymer ,water-soluble polymers ,Methyl methacrylate ,Acrylic acid ,acrylic acid ,Chemistry ,Organic Chemistry ,Solution polymerization ,021001 nanoscience & nanotechnology ,radical polymerization ,0104 chemical sciences ,kinetics (polym.) ,End-group ,[CHIM.POLY]Chemical Sciences/Polymers ,Monomer ,Polymerization ,0210 nano-technology - Abstract
This work examines the scope and limitations of the cyanoxyl (·OCN)-mediated free-radical polymerization of acrylic acid (AA) with respect to the criteria of livingness. Cyanoxyl persistent radicals were generated in situ through the reaction between arenediazonium salts (XC6H4NN⊕BF, where X is H, OCH3, Cl, or NO2) and sodium cyanate (NaOCN). This article thoroughly discusses the role played by such oxygen-centered radicals in the polymerization process; it particularly focuses on the influence of the concentration and nature of the diazonium salt, the solvent, and the temperature on features such as the variations of ln([M]0/[M]) versus time (where [M]0 is the initial monomer concentration and [M] is the monomer concentration), the number-average molar mass versus conversion, and the polydispersity versus conversion in cyanoxyl-mediated free-radical polymerizations of AA. Cyanoxyl-terminated samples were used as macroinitiators for the polymerization of methyl methacrylate to generate poly(acrylic acid)-b-poly(methyl methacrylate) block copolymers. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 519–533, 2005
- Published
- 2005
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