Well-defined polyvinylpyridine-block-polystyrene diblock copolymers via RAFT aqueous-alcoholic dispersion polymerization: synthesis and isoporous thin film morphology

Abstract

In this work, the synthesis and characterization of polyvinylpyridine-polystyrene (PVP-b-PS) diblock copolymers via reversible addition-fragmentation chain transfer (RAFT) dispersion polymerization is presented. A series of poly(4-vinylpyridine) (P4VP) and poly(2-vinylpyridine) (P2VP)...

RAFT Emulsion Polymerization of Styrene Using a Poly((N,N-dimethyl acrylamide)-co-(N-isopropyl acrylamide)) mCTA: Synthesis and Thermosensitivity

“…Especially RAFT emulsion and dispersion polymerization techniques have become a powerful tool for the efficient synthesis of the diblock copolymer. They provide an efficient heat transfer, a low viscosity during the entire reaction time and enable the production of well-defined polymers with high molar masses and nar-Polymers 2022, 14, 62 3 of 23 row dispersity [37,[41][42][43][44][45]. RAFT-mediated polymerization-induced self-assembly (PISA) has been studied thoroughly by a variety of scientific groups such as Armes et al [46], Troung et al [47], and Boyer et al [48], to name a few, effectively advancing the research in this area.…”

Pyridine-functional diblock copolymer nanoparticles synthesized via RAFT-mediated polymerization-induced self-assembly: effect of solution pH

“…Nieswandt et al successfully prepared P2VP–PS and P4VP–PS via RAFT aqueous-alcoholic dispersion polymerization using P2VP and P4VP as macro-CTAs, respectively. 38 Copolymers with high molar mass (>100 kg mol −1 ) could be achieved in both cases, but the P4VP–PS had broader molar mass distributions. Nieswandt et al also reported the preparation of poly(3-vinylpyridine)-poly(styrene) (P3VP–PS) via RAFT emulsion polymerization in DMF/H 2 O (50/50, v/v) solvent mixtures.…”

“…39 However, in all of the reports described above, block copolymer nanoparticles were formed via self-assembly of the copolymers in selective solvents. Although, Nieswandt et al claimed that P2VP–PS, 38 P4VP–PS, 38 and P3VP–PS 39 can be successfully prepared via RAFT-mediated PISA, they did not investigate these block copolymer nanoparticles directly. Instead, these copolymers were dissolved in THF and precipitated in an excess of ice-cold n -hexane to obtain nanoparticles, and the bulk and surface morphologies of the diblock copolymers were investigated.…”

Pyridine-containing block copolymeric nano-assemblies obtained through complementary hydrogen-bonding directed polymerization-induced self-assembly in water

“…13–15 In addition, the pyridine-containing BCPs with excellent stability, rigidness and facile functionalization make them excellent precursors for the construction of complex, highly-ordered and functional polymeric nanostructures for different applications. 16–19 Various kinds of pyridine-containing BCP nano-assemblies in aqueous solution have been constructed through the traditional solvent exchange method. 20,21 However, it still remains a critical challenge to design and fabricate pyridine-containing block polymeric nano-assemblies in a large scale in aqueous solution.…”