Controlled radical polymerization of N-vinylpyrrolidone by reversible addition-fragmentation chain transfer process
BORSALI, Redouane
Laboratoire de Chimie des polymères organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences
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Laboratoire de Chimie des polymères organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences
BORSALI, Redouane
Laboratoire de Chimie des polymères organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences
Laboratoire de Chimie des polymères organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences
GNANOU, Yves
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
< Leer menos
Laboratoire de Chimie des polymères organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Idioma
en
Article de revue
Este ítem está publicado en
Macromolecular Symposia. 2005, vol. 229, p. 8-17
Wiley-VCH Verlag
Resumen en inglés
Poly(N-vinylpyrrolidone) (PNVP) was polymerized by RAFT process using diphenyldithiocarbamate of diethylmalonate (DPCM) as the reversible chain transfer agent in the presence of a small percentage of a conventional radical ...Leer más >
Poly(N-vinylpyrrolidone) (PNVP) was polymerized by RAFT process using diphenyldithiocarbamate of diethylmalonate (DPCM) as the reversible chain transfer agent in the presence of a small percentage of a conventional radical initiator (AIBN). The molar mass of the polymers synthesized by this method was found to increase with conversion and time. The presence of end group in the polymer chain could be confirmed by H-1 NMR spectra. The molar masses calculated using H-1 NMR spectroscopy and static light scattering (SLS) showed good agreement with the theoretical molar masses. The RAFT compound was fully consumed during the initial stages of the polymerization itself. The controlled nature of these polymers was further confirmed by generating diblock copolymers by sequential addition of monomers such as styrene or n-butyl acrylate (n-BA). PNVP efficiently participated as a macro-RAFT reagent, and cross-over reaction between the two blocks efficiently occurred. The successful diblock copolymer synthesis using PNVP as macro-transfer reagent further confirms the "controlled" nature of such synthetic procedure.< Leer menos
Palabras clave en inglés
N-vinylpyrrolidone
RAFT
dithiocarbamate
amphiphilic diblock copolymers
controlled radical polymerization
Orígen
Importado de HalCentros de investigación