Journal
POLYMER CHEMISTRY
Volume 14, Issue 23, Pages 2829-2837Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d3py00278k
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In this study, alternating cationic copolymerizations were investigated to obtain polymers with ABCC-type monomer sequences, which were prepared from the reaction of 2-chloroethyl vinyl ether (CEVE) and cyclic trimers. The kinds of vinyl monomers and aldehyde molecules incorporated into the cyclic trimers affected the copolymerization frequencies with CEVE, and a cyclic trimer consisting of isobutyl VE (IBVE) and 2-nonenal (NNE) showed highly effective alternating copolymerizations with CEVE at appropriate monomer concentrations. Structural analysis of the methanolysis products revealed mainly ABCC-type periodic sequences (83% under optimized conditions).
Alternating cationic copolymerizations of 2-chloroethyl vinyl ether (CEVE; unit A) and cyclic trimers prepared from the cyclotrimerization of one vinyl monomer (unit B) and two aldehyde molecules (unit C) were investigated to obtain polymers with ABCC-type monomer sequences. The kinds of vinyl monomers and aldehyde molecules incorporated into the cyclic trimers affected the crossover frequencies during the copolymerizations with CEVE. In particular, a cyclic trimer consisting of isobutyl VE (IBVE) and 2-nonenal (NNE) was highly effective for alternating copolymerizations with CEVE at appropriate monomer concentrations. The obtained alternating copolymers potentially had three different sequences of ABCC-, ACCB-, and ACBC-types due to the different addition and ring-opening modes of the cyclic trimer. Structural analysis of the products obtained by methanolysis of the alternating copolymers revealed that ABCC-type periodic sequences were mainly obtained (83% under optimized conditions).
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