Showing results 41 to 45 of 45
  Controlled synthesis of carboxylic acid end-capped poly(heptadecafluorodecyl acrylate) and copolymers with 2-hydroxyethyl acrylateGrignard, Bruno  ; Jérôme, Christine ; Calberg, Cédric et alin Journal of Polymer Science Part A-Polymer Chemistry (2007), 45(8), 1499-1506 1H,1H,2H,2H-Heptadecafluorodecyl acrylate (AC8) was polymerized by reversible addition-fragmentation chain transfer and copolymerized with 2-hydroxyethyl acrylate with the formation of random and block ... [more ▼] 1H,1H,2H,2H-Heptadecafluorodecyl acrylate (AC8) was polymerized by reversible addition-fragmentation chain transfer and copolymerized with 2-hydroxyethyl acrylate with the formation of random and block copolymers, respectively. The kinetics of the (co)polymerization was monitored with H-1 NMR spectroscopy and showed that the homopolymerization and random copolymerization of AC8 were under control. As a result of this control and the use of S-1-dodecyl-S-(alpha,alpha'-dimethyl-alpha"-acetic acid)trithiocarbonate as a chain-transfer agent, the copolymer chains were end-capped by an a-carboxylic acid group. Moreover, the controlled polymerization of AC8 was confirmed by the successful synthesis of poly(1H,1H,2H,2H-heptadecafluorodecyl acrylate)-b-poly(2hydroxyethyl acrylate) diblock copolymers, which were typically amphiphilic compounds. [less ▲] Detailed reference viewed: 26 (8 ULg)Effects of incorporation of modified silica nanoparticles on the mechanical and thermal properties of PMMA; ; et al in Journal of Thermal Analysis and Calorimetry (2007), 87(1), 101-104 Silica nanoparticles of various sizes have been incorporated by melt compounding in a poly(methyl methacrylate) (PMMA) matrix to enhance its thermal and mechanical properties. In order to improve ... [more ▼] Silica nanoparticles of various sizes have been incorporated by melt compounding in a poly(methyl methacrylate) (PMMA) matrix to enhance its thermal and mechanical properties. In order to improve nanoparticles dispersion, PMMA grafted particles have been prepared by atom transfer radical polymerization (ATRP) from well-defined silica nanoparticles. This strategy was expected to ensure compatibility between both components of the PMMA nanocomposites. TEM analysis have been performed to evaluate the nanosilica dispersion whereas modified and non-modified silica/PMMA nanocomposites thermal stability and mechanical properties have been investigated by both thermogravimetric and dynamical mechanical analysis. [less ▲] Detailed reference viewed: 90 (9 ULg)Synthesis of polymer nanocomposites and microspheres in supercritical carbon CO2Urbanczyk, Laetitia ; Grignard, Bruno ; et alPoster (2005, June 01) Detailed reference viewed: 12 (4 ULg)Synthesis and foaming of polymer nanocomposites and microspheres in supercritical CO2Urbanczyk, Laetitia ; Grignard, Bruno ; et alPoster (2005, June 01) Detailed reference viewed: 6 (2 ULg)Synthesis of end functional (co)polymers, precursors of triblock copolymers by controlled radical polymerizationGrignard, Bruno ; ; et alPoster (2003, May 16) Detailed reference viewed: 11 (1 ULg) |
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