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1996•Macromolecular SymposiaRequires access

Recent developments in living cationic polymerization

Oskar Nuyken, Hubertus Kröner, Gisbert Rieß, Saehoon Oh, Stefan Ingrisch

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Abstract

Abstract Scope and limitation of the vinyl ether polymerization initiated by NR4ClO4(KClO4;LiClO4)/CH3CHI‐OR was discussed. Besides isobutyl vinyl ether (IBVE), N‐vinylcarbazole (NVC) and 2‐chloroethyl vinyl ether (CEVE) were initiated by NR4ClO4/CH3CHI‐OR. These polymerizations exhibited the characteristics of a living polymerization. However, in order to observe narrow molar mass distribution NVC was initiated with CH3CHI‐OR, without salts. Block copolymers were synthesized by the method of sequential monomer addition (NVC, IBVE, CEVE). The PCEVE segment was modified by nucleophilic substitution, which allowed the synthesis of amphiphilic block copolymers.

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What this paper is about

Abstract Scope and limitation of the vinyl ether polymerization initiated by NR4ClO4(KClO4;LiClO4)/CH3CHI‐OR was discussed. Besides isobutyl vinyl ether (IBVE), N‐vinylcarbazole (NVC) and 2‐chloroethyl vinyl ether (CEVE) were initiated by NR4ClO4/CH3CHI‐OR. These polymerizations exhibited the characteristics of a living polymerization. However, in order to observe narrow molar mass distribution NVC was initiated with CH3CHI‐OR, without salts. Block copolymers were synthesized by the method of sequential monomer addition (NVC, IBVE, CEVE). The PCEVE segment was modified by nucleophilic substitution, which allowed the synthesis of amphiphilic block copolymers.

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Available abstract

Abstract Scope and limitation of the vinyl ether polymerization initiated by NR4ClO4(KClO4;LiClO4)/CH3CHI‐OR was discussed. Besides isobutyl vinyl ether (IBVE), N‐vinylcarbazole (NVC) and 2‐chloroethyl vinyl ether (CEVE) were initiated by NR4ClO4/CH3CHI‐OR. These polymerizations exhibited the characteristics of a living polymerization. However, in order to observe narrow molar mass distribution NVC was initiated with CH3CHI‐OR, without salts. Block copolymers were synthesized by the method of sequential monomer addition (NVC, IBVE, CEVE). The PCEVE segment was modified by nucleophilic substitution, which allowed the synthesis of amphiphilic block copolymers.

Key concepts: Living cationic polymerization, Vinyl ether, Cationic polymerization, Polymer chemistry, Copolymer, Polymerization, Monomer, Living polymerization

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