Philippe Chaumont

Synthesis and characterization of multiblock copolymers containing poly(dimethyl siloxane) blocks

Abstract Multiblock copolymers of polystyrene and poly(dimethyl siloxane) were obtained by a hydrosilylation reaction between a,w dihydrogeno poly(dimethyl siloxane) and a,w -di(vinyl silane) polystyrene. Under well chosen experimental conditions the polycondensation is free of site reactions and the macromolecules formed are linear with up to 10 blocks, which corresponds to reaction of 90% of the functions initially present. The block copolymers obtained have been characterized by g.p.c. viscosimetry and light scattering.

Polymer Nanocomposites Containing Functionalised Multiwalled Carbon NanoTubes: a Particular Attention to Polyolefin Based Materials

ion reactions from alkyl hydrocarbon bonds was studied starting from the reaction of DCP-derived radicals with pentadecane. Syntheses and Applications of Carbon Nanotubes and Their Composites 90

Convenient synthesis of a surface-active alkoxyamineinitiator from styrene oxide Living/free-radical polymerization of styrene and n-butyl acrylate

Abstract A novel alkoxyamine based on N-tert-butyl-1-diethylphosphono-2,2- dimethylpropyl nitroxide (DEPN) has been designed with a functional group, which promotes the chemisorption of free silanols from silicon surface and organicinorganic hybrid materials by a sol-gel process. This alkoxyamine has been synthesized in high yield from styrene oxide and has been employed for the nitroxide-mediated polymerization of styrene and n-butyl acrylate. The resulting alkoxysilane-containing homo- and copolymer precursors have been shown to have narrow molecular weight distributions.