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- W1990711364 abstract "ABSTRACT α-Methacryloyl-ω-hydroxyl-poly(ϵ-caprolactone) macromonomer was synthesized using stannous 2-ethyl hexanoate (Sn(oct)2) as catalyst and 2-hydroxyethyl methacrylate (HEMA) as initiator. The macromonomer was characterized by SEC, IR and 1H-NMR. The results confirmed the expected macromonomer structure, namely linear poly(ϵ-caprolactone) carrying a methacryloyl group and one hydroxyl end group. The polymerization kinetics and mechanism are discussed. The molecular weight and polydispersity of the macromonomer depended on the concentrations of Sn(oct)2 and HEMA as well as the molar ratio of Sn/OH, respectively. The results imply that both Sn(oct)2 and HEMA act as the initiator participating in the polymerization. The copolymers from macromonomer and HEMA or macromonomer and trimethylene carbonate were synthesized through solution free radical or bulk ringopening polymerizations. The expected graft structure of poly(2- hydroxyethyl methacrylate-g-ϵ-caprolactone) copolymer and block structure of poly(ϵ-caprolactone- b-trimethylene carbonate) copolymer were confirmed by 1H-NMR." @default.
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- W1990711364 date "1998-02-01" @default.
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- W1990711364 title "α-Methacryloyl-ω-Hydroxyl-Poly(ϵ-Caprolactone) Macromonomer: Synthesis, Characterization, and Copolymerization" @default.
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- W1990711364 doi "https://doi.org/10.1080/10601329808001974" @default.
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