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Synthesis, characterization, ring-opening metathesis polymerization of cyclobutenyl macromonomers obtained by "click" chemistry and RAFT polymerization

Abstract : The objective of this thesis is the preparation and characterization of well-defined graft copolymers with 1,4 polybutadiene (PBu) backbone and polyoxanorbornene backbone by combination of ROMP and “click” reaction and/or RAFT polymerization according to the “grafting through” method. A series of new symmetrical or non-symmetrical poly(ethylene oxide) (PEO), poly(ethyl acrylate), poly(N-isopropylacrylamide) (PNIPAM) and PEO-b-PNIPAM macromonomers was prepared by “click” reaction and/or RAFT polymerization from cyclobutenyl and oxanorbornenyl precursors -containing “click-able” groups and/or a RAFT agent. A series of polyoxanorbornene-g-PEO and PBu-g-PEO with low PDIs has been obtained by ROMP in solution using the Grubbs or the Schrock catalysts. The ROMP in dispersed aqueous media showed that the mini-emulsion conditions were efficient for the polymerization of both oxanorbornenyl- and cyclobutenyl-functionalized PEO macromonomers.
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Dao Le. Synthesis, characterization, ring-opening metathesis polymerization of cyclobutenyl macromonomers obtained by "click" chemistry and RAFT polymerization. Other. Université du Maine, 2012. English. ⟨NNT : 2012LEMA1010⟩. ⟨tel-00743217⟩

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