Martin Hetzer, Bernhard V. K. J. Schmidt, Christopher Barner-Kowollik and Helmut Ritter Limitations of cyclodextrin-mediated RAFT homopolymerization and block copolymer formation Journal of Polymer Science Part A: Polymer Chemistry 51
The limitations of the aqueous cyclodextrin mediated reversible addition fragmentation chain transfer (RAFT) polymerization of the new hydrophobic monomer 4-(tert-butyl)phenyl 6-acrylamidohexanoate (TBP-AA-HO) are investigated. The results obtained by homopolymerization of TBP-AA-HO and chain extension experiments with hydrophilic macro-chain transfer agents indicate a crucial influence of cyclodextrin molecules on the growing polymer chain. A hypothesis is provided that explains the observed limitation of the polymerization process and the achieved low molecular weights for higher monomer/chain transfer agent ratios.
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