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Facile synthesis of poly(N-vinyl pyrrolidone) block copolymers with “more-activated” monomers by using photoinduced successive RAFT polymerization

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Abstract

It has still been a great challenge in polymer chemistry to synthesize well-defined block copolymers from both “more-activated” monomer (MAM) and “less-activated” monomer (LAM). Herein, a novel xanthate O-phenyl-S-[1-(phenylethyl)] dithiocarbonate (PXPE) was synthesized and used to mediate the successive polymerizations of a series of MAMs (e.g., butyl acrylate (BA), methyl acrylate (MA) and styrene (St)) and N-vinyl pyrrolidone (NVP) by using a single method under irradiation with UV or visible light. The well-defined PMAM-b-PNVP block copolymers (e.g., PBA-b-PNVP, PMA-b-PNVP, PS-b-PNVP) were obtained with narrow molecular weight distributions (Mw/Mn ≤ 1.37). The living features of the polymerization were demonstrated by the linear increase of molecular weights with monomer conversion. Moreover, the components in this polymerization system were simple and no extra initiators or catalysts were required, which brought about great advantages for the potential application of this technique.

Graphical abstract: Facile synthesis of poly(N-vinyl pyrrolidone) block copolymers with “more-activated” monomers by using photoinduced successive RAFT polymerization

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Article information


Submitted
21 Nov 2019
Accepted
05 Feb 2020
First published
05 Feb 2020

Polym. Chem., 2020, Advance Article
Article type
Paper

Facile synthesis of poly(N-vinyl pyrrolidone) block copolymers with “more-activated” monomers by using photoinduced successive RAFT polymerization

Y. Wang, M. Wang, L. Bai, L. Zhang, Z. Cheng and X. Zhu, Polym. Chem., 2020, Advance Article , DOI: 10.1039/C9PY01763A

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